1 set of valve springs Genuine Porsche part 99310590151

Valve spring



Fits:
Porsche 993 C2 / C4 3.6L 1994-97

Click 'Zoom in' for large parts diagram.
Diagram Ref No 13.

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99310590151

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Intermediate Shaft with Timing Gear Number 0.

Fits:
Porsche 993 1994-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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99310591156

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Valve spring. Porsche 993 1995-97



Fits:
Porsche 993 C2 / C4 3.6L 1994-97

Click 'Zoom in' for large parts diagram.
Diagram Ref No 13.

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99310590151

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Valve spring kit - high performance. 



Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats

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HP109

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JE Piston - Set of 6
Forged from 4032 Aluminium Alloy



Fits:
Porsche 964 / 993 3.6ltr (11.0:1)

Engine Size : 3.6ltr
Bore Size: 100.00mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.0:1
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

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381261

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JE Piston - Set of 6
Forged from 4032 Aluminium Alloy



Fits:
Porsche 964 / 993 3.6ltr (11.0:1)

Engine Size : 3.6ltr
Bore Size: 102.00mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.0:1
Oversize: 2.00mm
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

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381262

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JE Piston - Set of 6
Forged from 4032 Aluminium Alloy



Fits:
Porsche 964 / 993 3.6ltr (11.0:1)

Engine Size : 3.6ltr
Bore Size: 103.12mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.0:1
Oversize: 3.15mm
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

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381263

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JE Piston - Set of 6
Forged from 4032 Aluminium Alloy



Fits:
Porsche 964 / 993 3.6ltr (11.0:1)

Engine Size : 3.6ltr
Bore Size: 105.03mm
Stroke: 76.40mm
Rod length: 127.00mm
Compression Distance : 31.80mm
Compression Ratio: 11.0:1
Oversize: 5.03mm
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

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381264

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