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Porsche > 911 & 912 (1965-1989) > 911 1978-1983 3.0L / SC > Engine Rebuild Parts > Engine Cylinders / Liners / Pistons >

JE Pistons

JE Pistons

DISPLAYING 1 to 15 (of 15 products)
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 3.00mm Oversize - 93010396203, 93010398305, 93010396204, 93010398304 - JE-381254, 381254
4
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 3.00mm Oversize
381254
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0ltr (10.0:1)

Engine Size : 3.0ltr
Bore Size: 98.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Oversize: 3.00mm
Material: 4032 Aluminium Alloy

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381254
93010396203
93010398305
93010396204
93010398304

The product you are viewing cross references to these numbers
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 5.00mm Oversize - 93010396203, 93010398305, 93010396204, 93010398304 - JE-381255, 381255
4
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 5.00mm Oversize
381255
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0ltr (10.0:1)

Engine Size : 3.0ltr
Bore Size: 100.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Oversize: 5.00mm
Material: 4032 Aluminium Alloy

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381255
93010396203
93010398305
93010396204
93010398304

The product you are viewing cross references to these numbers
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 7.00mm Oversize - 93010396203, 93010398305, 93010396204, 93010398304 - JE-381256, 381256
4
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) 7.00mm Oversize
381256
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0ltr (10.0:1)

Engine Size : 3.0ltr
Bore Size: 102.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Oversize: 7.00mm
Material: 4032 Aluminium Alloy

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381256
93010396203
93010398305
93010396204
93010398304

The product you are viewing cross references to these numbers
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) STD Size - 93010396203, 93010398305, 93010396204, 93010398304 - JE-381253, 381253
4
JE Piston Set Forged 4032 Aluminium Alloy. Porsche 911 3.0ltr (10.0:1) STD Size
381253
Product Information
Product Information
JE Piston - Set of 6
Forged from 4032 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0ltr (10.0:1)

Engine Size : 3.0ltr
Bore Size: 95.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.0:1
Oversize: Standard (STD)
Material: 4032 Aluminium Alloy

JE designs are specifically engineered for extreme applications up to and including professional competition. In this environment, the higher compression ratios, high boost or heavy nitrous use necessitate the higher tensile strength of 4032 and 2618 aluminium alloy, which has been optimized for aftermarket Nikasil cylinders. The JE Piston Porsche series now include low friction skirt coatings and are lighter than before, improving both performance and longevity.

The Dome/Dish require no deburring or preparation and feature a smooth flowing radii for excellent flame travel.

4032 Aluminium Alloy
Pistons manufactured from 4032 wrought aluminium alloy are designed for high performance applications where a strong and quiet piston is required. These pistons require less initial piston to cylinder wall clearance and are quieter at start-up. Ideal for street/road use

Piston Features:
• Accumulator Grooves
• Contact Reduction Grooves
• Double Broach Oilers
• Skirt Coating
• Under crown Milling for Weight Reduction
• Pin Fitting, Wire Locks and Rings Included



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

381253
93010396203
93010398305
93010396204
93010398304

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (10.5:1) - 353247 - JE-353247
4
JE Piston Set. Porsche 911 3.0L 12V (10.5:1)
353247
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (10.5:1)

Engine Size : 3.0
Bore Size: 95.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.5
Dome volume: 44.7cc
Oversize: STD

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353247
353247

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (10.5:1) - 353250 - JE-353250
4
JE Piston Set. Porsche 911 3.0L 12V (10.5:1)
353250
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (10.5:1)

Engine Size : 3.0
Bore Size: 98.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.5
Dome volume: 41.7cc
Oversize: 3.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353250
353250

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (10.5:1) - 353253 - JE-353253
4
JE Piston Set. Porsche 911 3.0L 12V (10.5:1)
353253
Product Information
Product Information
JE Piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (10.5:1)

Engine Size : 3.0
Bore Size: 100.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.5
Dome volume: 39.8cc
Oversize: 5.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353253
353253

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (10.5:1) - 353255 - JE-353255
4
JE Piston Set. Porsche 911 3.0L 12V (10.5:1)
353255
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (10.5:1)

Engine Size : 3.0
Bore Size: 102.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 10.5
Dome volume: 37.7cc
Oversize: 7.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353255
353255

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (11.5:1) - 353248 - JE-353248
4
JE Piston Set. Porsche 911 3.0L 12V (11.5:1)
353248
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (11.5:1)

Engine Size : 3.0
Bore Size: 95.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 11.5
Dome volume: 49.7cc
Oversize: STD

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353248
353248

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (11.5:1) - 353251 - JE-353251
4
JE Piston Set. Porsche 911 3.0L 12V (11.5:1)
353251
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (11.5:1)

Engine Size : 3.0
Bore Size: 98.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 11.5
Dome volume: 47.1cc
Oversize: 3.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353251
353251

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (11.5:1) - 353254 - JE-353254
4
JE Piston Set. Porsche 911 3.0L 12V (11.5:1)
353254
Product Information
Product Information
JE Piston - Set of 6
Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (11.5:1)

Engine Size : 3.0
Bore Size: 100.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 11.5
Dome volume: 45.3cc
Oversize: 5.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353254
353254

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (11.5:1) - 353256 - JE-353256
4
JE Piston Set. Porsche 911 3.0L 12V (11.5:1)
353256
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (11.5:1)

Engine Size : 3.0
Bore Size: 102.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 11.5
Dome volume: 43.5cc
Oversize: 7.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353256
353256

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (9.5:1) - 353246 - JE-353246
4
JE Piston Set. Porsche 911 3.0L 12V (9.5:1)
353246
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (9.5:1)

Engine Size : 3.0
Bore Size: 95.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 9.5
Dome volume: 38.5cc
Oversize: STD

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353246
353246

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (9.5:1) - 353249 - JE-353249
4
JE Piston Set. Porsche 911 3.0L 12V (9.5:1)
353249
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (9.5:1)

Engine Size : 3.0
Bore Size: 98.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 9.5
Dome volume: 35.7cc
Oversize: 3.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353249
353249

The product you are viewing cross references to these numbers
JE Piston Set. Porsche 911 3.0L 12V (9.5:1) - 353252 - JE-353252
4
JE Piston Set. Porsche 911 3.0L 12V (9.5:1)
353252
Product Information
Product Information
JE Piston - Set of 6

Forged from 2618 Aluminium Alloy

jepiston

Fits:
Porsche 911 3.0L (9.5:1)

Engine Size : 3.0
Bore Size: 100.00mm
Stroke: 70.40mm
Rod length: 127.80mm
Compression Distance : 33.90mm
Compression Ratio: 9.5
Dome volume: 32.9cc
Oversize: 5.00mm

Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.

2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.  

Includes:
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

353252
353252

The product you are viewing cross references to these numbers
DISPLAYING 1 to 15 (of 15 products)
Also found on these pages
About JE Pistons

JE Pistons for High-Output, High-Strength & Precision-Built Porsche Engine Rebuilds

JE Pistons are engineered for engines that need uncompromising strength, exceptional reliability and maximum performance. Manufactured from forged aluminium using motorsport-grade techniques, JE components deliver superior durability under extreme cylinder pressures, high RPM loads and elevated combustion temperatures. These pistons are a top choice for performance road builds, turbocharged applications, high-compression setups and competition-focused Porsche engines.

Whether you’re building a reliable street performer or a full racing engine, JE Pistons provide the toughness, stability and precision needed to extract the best from your powerplant.

What JE Pistons Do

JE Pistons enhance engine performance and durability by:

  • Providing exceptional structural strength for boosted or high-RPM operation
  • Reducing reciprocating mass for improved throttle response
  • Increasing combustion efficiency with advanced crown and skirt designs
  • Offering superior heat resistance under extreme load
  • Maintaining consistent sealing with precision-machined ring grooves
  • Reducing friction, improving smoothness and efficiency
  • Supporting aggressive tuning without sacrificing reliability

These pistons are engineered to handle the demands that standard cast pistons cannot tolerate.

Why Pistons Commonly Fail

Internal combustion engines place enormous stress on pistons—especially in modified or aging powerplants. Common piston failures include:

  • Detonation and pre-ignition, damaging crowns and ring lands
  • Oil starvation, leading to scuffing, seizure or skirt collapse
  • Thermal overload, often in turbo or track environments
  • Material fatigue from high mileage or frequent high-rev use
  • Incorrect tuning, creating lean conditions and excessive heat
  • Excessive boost pressure, overwhelming cast pistons
  • Protective coating wear, causing friction and heat issues

Symptoms include smoke, low compression, knocking noises, oil consumption and visible piston scoring.

Why You Should Replace Old Pistons with JE Forged Components

Upgrading to precision-engineered JE forged pistons—designed to surpass original performance and durability levels—provides major benefits for any serious rebuild.

Key advantages include:

  • Superior strength under extreme boost or high RPM
  • Improved compression retention and sealing efficiency
  • Reduced risk of piston failure in racing or track conditions
  • Enhanced power delivery with optimised combustion characteristics
  • Longer lifespan thanks to premium-grade forging materials
  • Smoother, more responsive engine performance
  • Confidence when running aggressive tunes, high compression or forced induction

JE Pistons are an essential upgrade for builders targeting motorsport-grade reliability.

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