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Spark Plugs

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DISPLAYING 1 to 14 (of 14 products)
IGNITIONKIT911.3.2L
Product Information
Product Information
IGNITION KIT. Includes Ignition Leads, (6) Spark plugs, Rotor Arm & Distributor Cap.

Restore power and performance to your 911 3.2L with this complete ignition tune-up kit. Our kit includes, 6 x spark plugs, distributor cap, distributor rotor, and a set of sparks plug wire set with the ignition coil lead wires.

Fits:
Porsche 911 1984-1986 3.2L  (Not 1984 cars)

Porsche 911 1987-1989 3.2L G50


Ignition Tune-Up Kit

An ignition tune-up kit includes all the parts you need to service your vehicle's ignition system. Components like spark plugs, ignition coils, spark plug connectors, and spark plug wires will eventually require replacement.

When these components are used past their useable service life you will often experience a vehicle that does not run smoothly, suffers from misfires, or even completely dead cylinders due to no spark. Replacing ignition components should be done on a regular interval

Ignition Tune-Up Kit Failure Symptoms

  • Check engine light due to misfire 
  •  P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 and other cylinder specific misfire OBD fault codes 
  •  Hesitation while accelerating 
  •  Poor fuel economy due to incomplete combustion       



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Related, superseded, cross reference or alternative numbers for comparison.

IGNITIONKIT911.3.2L
91160201103
91160201203
91160201120
93060290202
93060291900

The product you are viewing cross references to these numbers
91160231500KIT
Product Information
Product Information
Spark Plug Cap Kit.
Kit Includes: x6 Spark Plug Caps

Fits:
Porsche 911 1977>>1989
Porsche 930 Turbo 1977>>1989 
Porsche 964 3.3L Turbo 1991>>1992 

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Related, superseded, cross reference or alternative numbers for comparison.

91160231500KIT
91160231500
91160331100
91160930900
91160931100
91160931200

The product you are viewing cross references to these numbers
99917015690/1x6
Product Information
Product Information
Spark Plugs (PACK OF 6). Porsche 911 / 924S / 928 / 944

bosch

Spark Plug WR7DC.

PACK OF 6

Fits:
Porsche 911 3.2L WITH CATALYST 1984-89
Porsche 924S 2.5L 1986-88
Porsche 928S / 928S2 / 928S4 / 928GT 1983-1991
Porsche 944 / 944S / 944S2 / 944T 1985-91

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Related, superseded, cross reference or alternative numbers for comparison.

99917015690
99917015690
92809460203
99917014190
99917015890
99917018990
9991701899A

The product you are viewing cross references to these numbers
99917015790/1x6
Product Information
Product Information
Spark Plugs (PACK OF 6). Porsche 911 3.2L 1984-89
WR4CC.

ngk

PACK OF 6

Fits:
Porsche 911 3.2L Carrera 1984-89
Non Catalyst.

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

99917015790
99917015790

The product you are viewing cross references to these numbers
99917015790/2x6
Product Information
Product Information
Spark plugs,  WR4CC.
Spark Plug Set (Pack of 6) is an OE Match ignition service kit designed to replicate the original Porsche factory spark plugs in fit, heat range, and ignition performance. Supplied as a complete set of six, it is intended for compatible Porsche six-cylinder engines that specify this plug type.
PACK OF 6

Fits:
Porsche 911 3.2L Carrera 1984 - 1989
Non Catalyst.

This OE Match spark plug set contains six identical spark plugs, each manufactured to OE-equivalent specifications to ensure consistent combustion and dependable ignition across all cylinders. Built to withstand high combustion temperatures and sustained electrical load, these plugs help maintain smooth engine operation, stable idle, and reliable power delivery.

Replacing spark plugs as a complete set is essential for balanced ignition and even engine performance. Over time, worn or mismatched plugs can cause misfires, hesitation, increased fuel consumption, and uneven combustion. This OE Match pack of six provides a cost-effective solution for routine servicing, tune-ups, or ignition maintenance while maintaining OE-level performance and fit.

 All plugs are direct-fit replacements and install without modification.

Function:
  Provides reliable ignition for all six cylinders
  Supports smooth idle and responsive acceleration
  Helps maintain fuel efficiency and balanced combustion
  Supplied as a complete engine set for correct servicing

Spark plugs degrade over time due to heat and combustion stress. Replacing all six plugs together ensures consistent ignition timing across cylinders, prevents misfires, restores smooth performance, and helps protect catalytic converters from damage caused by incomplete combustion. Using an OE Match set ensures reliable performance without compromising fit or function.

When to replace:
  Engine misfires or rough idle
  Reduced throttle response or loss of power
  Increased fuel consumption
  At manufacturer-recommended service intervals
  During routine tune-ups or ignition system servicing



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

99917015790
99917015790
WR4CC

The product you are viewing cross references to these numbers
Special Offer
91160231500/1
Product Information
Product Information
Spark plug cap.
6 Required per engine. Price is for each.

beru

Fits:
Porsche 911 1977-89 (6 per model)
Porsche 930 Turbo 1977-89 (6 per model)
Porsche 964 3.3L Turbo 1991-92 (6 per model)

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

91160231500
91160231500
91160331100
91160930900
91160931100
91160931200

The product you are viewing cross references to these numbers
Special Order item
99957105202
Product Information
Product Information
Spark plug tool key. 

porsche

To be used with spark plug tools:
477012203A - 911 all & 964 Turbo
99957105402 - 964 (non turbo)

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

99957105202
99957105202

The product you are viewing cross references to these numbers
Special Order item
477012203A
Product Information
Product Information
Spark plug wrench. 
Doesn't come with the key. Available separately. Part number 99957105202

porsche

Fits:
Porsche 911 1965-89
Porsche 964 1989-94 Turbo
Porsche 914 1970-76

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

477012203A
477012203A

The product you are viewing cross references to these numbers
Special Order item
99917015690
Product Information
Product Information
Spark plug WR 7 DC+
Price is for each.

Fits:
Porsche 911 3.2L  1984 - 89 *with catalyst
Porsche 924S 2.5L 1986 - 1988
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E
Porsche 968 1992 - 1995 Coupe

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

99917015690
99917015690
92809460203
99917014190
99917015890
99917018990
9991701899A

The product you are viewing cross references to these numbers
Special Offer
99917015690/1
Product Information
Product Information
Spark plug WR 7 DC+
Price is for each.

bosch

Fits:
Porsche 911 3.2L WITH CATALYST 1984-89
Porsche 924S 2.5L 1986-88
Porsche 928S / 928S2 / 928S4 / 928GT 1983-1991
Porsche 928 GTS 1992-95 (M28.49/50)
Porsche 944 / 944S / 944S2 / 944T 1985-91
Porsche 968 1992-95 (M44.43/44)
Porsche 912E



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

99917015690
99917015690
0242235663
92809460203
99917014190
99917015890
99917018990
9991701899A

The product you are viewing cross references to these numbers
Special Offer
99917015690/3
Product Information
Product Information
Spark plug WR 7 DC+
The spark plug produces a precisely timed electrical spark to ignite the air-fuel mixture within the combustion chamber. This ignition process enables smooth engine operation, efficient fuel burn, and reliable power output.
Sold individually,  4, 6 or 8 required depending on engine type

Fits:
Porsche 911 3.2L  1984 - 89 *with catalyst
Porsche 924S 2.5L 1986 - 1988
Porsche 928S / 928S2 / 928S4 / 928GT 1983 - 1991
Porsche 944 / 944S / 944S2 / 944T 1985 - 1991
Porsche 912E
Porsche 968 1992 - 1995 Coupe

Spark plugs play a critical role in engine efficiency, smoothness, and power delivery. Over time, wear from heat and combustion stress can reduce spark quality, leading to misfires, hesitation, and increased fuel consumption. Replacing worn plugs with an OE Match unit restores proper ignition timing and helps maintain optimal engine performance.

Designed for direct installation with no modification required, this spark plug is suitable for routine servicing, diagnostics, or replacement of individual worn plugs.

Function:
Generates a consistent ignition spark for combustion
  Supports smooth idle and responsive acceleration
  Helps maintain proper fuel efficiency and emissions control
  Direct-fit replacement for easy installation

A worn or incorrect spark plug can cause rough running, misfires, loss of power, and reduced fuel economy. Using a correct OE Match spark plug ensures ignition performance remains consistent with factory expectations, helping preserve engine reliability and long-term efficiency.

When to replace:
  Engine misfires or uneven idle
  Hesitation or reduced throttle response
  Increased fuel consumption
  At manufacturer-recommended service intervals
  During tune-ups or ignition system maintenance

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

99917015690
99917015690
92809460203
99917014190
99917015890
99917018990
9991701899A

The product you are viewing cross references to these numbers
Special Order item
99917015790
Product Information
Product Information
Spark Plug WR4CC.
6 Required per engine. Price is for each.

porsche

Fits:
Porsche 911 3.2L Carrera 1984-89
Non Catalyst.

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

99917015790
99917015790
2411

The product you are viewing cross references to these numbers
Special Offer
99917015790/1
Product Information
Product Information
Spark plug WR4CC.
6 Required per engine. Price is for each.

ngk

Fits:
Porsche 911 3.2L Carrera 1984-89
Non Catalyst.

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

99917015790
99917015790
2411

The product you are viewing cross references to these numbers
Special Offer
99917015790/2
Product Information
Product Information
Spark plug WR4CC.
The spark plug produces a precisely timed electrical spark inside the combustion chamber to ignite the air-fuel mixture. This process enables efficient combustion, smooth power delivery, and reliable engine performance.
Sold individually, 6 Required per engine.

Fits:
Porsche 911 3.2L Carrera 1984 - 1989
Non Catalyst.

Spark plugs are critical to engine efficiency, power delivery, and smooth running. Over time, heat and combustion stress can reduce spark quality, leading to misfires, hesitation, and increased fuel consumption. Replacing a worn plug with this OE Match unit helps restore proper ignition timing and reliable combustion performance.
Designed as a direct replacement, this spark plug installs easily with no modification required, making it ideal for routine servicing or replacement of individual plugs.

Function:
•  Generates a consistent ignition spark for proper combustion
•  Supports smooth idle and responsive throttle response
•  Helps maintain fuel efficiency and stable engine operation
•  Direct-fit replacement for straightforward installation

A worn or degraded spark plug can cause rough running, misfires, loss of power, and poor fuel economy. Using a correct OE Match spark plug ensures ignition performance remains consistent with factory expectations, helping preserve engine reliability and long-term efficiency.

When to replace:
  Engine misfires or uneven idle
  Reduced throttle response or hesitation Increased fuel consumption
  At manufacturer-recommended service intervals
  During routine tune-ups or ignition system servicing

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

99917015790
99917015790
WR4CC

The product you are viewing cross references to these numbers
DISPLAYING 1 to 14 (of 14 products)
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About Spark Plugs

Porsche Spark Plugs | Design911 High-Performance Ignition Components for Power & Efficiency

Spark plugs play a vital role in the performance, efficiency, and reliability of your Porsche’s engine. They ignite the air-fuel mixture inside the combustion chamber, creating the precise explosion needed to generate power. High-quality spark plugs ensure clean ignition, smooth acceleration, and reduced emissions — helping your Porsche perform exactly as intended on every drive.

At Design911, we stock a full range of spark plugs from leading manufacturers, engineered for superior conductivity, heat resistance, and long service life. Available in iridium, platinum, and copper-core designs, each spark plug is precision-crafted to match your Porsche’s specific ignition requirements. Ideal for routine maintenance, tuning, or complete engine rebuilds, our spark plugs ensure reliable performance from idle to redline.

What Do Spark Plugs Do?

Spark plugs are critical ignition components that deliver the electric spark required to ignite the air-fuel mixture in the combustion chamber.

Core Functions:
• Create a high-voltage spark to initiate combustion.
• Ensure smooth, efficient engine operation.
• Support optimal fuel economy and throttle response.
• Reduce emissions through clean, consistent ignition.
• Maintain balanced power delivery and idle stability.

When properly maintained, spark plugs enhance both performance and fuel efficiency, ensuring your Porsche runs with precision and reliability.

Why Do Spark Plugs Fail or Degrade?

Spark plugs operate under intense pressure, heat, and chemical exposure — gradually wearing down over time and mileage.

Common Causes of Failure Include:
• Electrode wear from prolonged high-temperature operation.
• Carbon or oil fouling from incomplete combustion.
• Cracked or degraded insulators due to thermal stress.
• Incorrect heat range or plug gap settings.
• Age-related corrosion or weakened spark performance.

Failing spark plugs can cause rough idling, misfires, reduced fuel economy, and loss of power — making regular replacement essential to maintain your Porsche’s performance.

Why Replace or Upgrade Your Porsche Spark Plugs?

Replacing worn spark plugs restores full ignition efficiency, fuel economy, and responsiveness. Upgrading to performance-grade materials can also improve durability and spark precision for motorsport or tuned applications.

Key Benefits:
• Restores smooth acceleration and idle stability.
• Improves fuel efficiency and throttle response.
• Reduces misfires, vibration, and engine hesitation.
• Available in platinum, iridium, and copper-core configurations.
• Compatible with Porsche 911, 944, 968, Boxster, Cayman, Panamera, and Macan models.
• Ideal for servicing, tuning, or complete engine rebuilds.

Design911’s Porsche spark plugs deliver performance, precision, and protection — ensuring consistent ignition and long-lasting reliability for your Porsche engine.

Highlights

• Premium Porsche spark plugs for all engine types.
• Precision-engineered for reliable combustion and performance.
• Available in standard and high-performance variants.
• Improves efficiency, throttle response, and emissions.
• Fits both classic and modern Porsche models.
• Perfect for servicing, performance tuning, or restoration.

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