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Spark Plugs

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DISPLAYING 33 to 45 (of 45 products)
1 2 3
Special Order item
99610532552
Product Information
Product Information
Replacement spark plug tube. 

Sold individually; x6 required per engine.

Fits:
Porsche 986 Boxster / Boxster S 1997-02
Porsche 996 C2 / C4 3.4L 1998-01

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

*Please note that Genuine Porsche spark plug tubes do not come with replacement o-rings. We recommend replacing the o-rings at the same time. They are available for purchase separately, and you will be prompted to add them to your basket during checkout.

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99610532552
99970721540
99970734341

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Special Offer
99610532552/1
Product Information
Product Information
Replacement spark plug tube with new o-rings.
This spark plug tube is engineered as a direct replacement for the original Porsche spark plug tube. It provides a sealed, precision-fit channel through the cylinder head for the spark plug, preventing coolant ingress while supporting proper plug alignment and ignition performance.
Sold individually, 6 required per engine.

Fits:
Porsche 986 Boxster / Boxster S 1997 - 2002
Porsche 996 C2 / C4 3.4L 1998 - 2001

Diagram ref no 27, 28 and 29.

The spark plug tube provides a protective and sealed passage for the spark plug through the cylinder head. It:
Supports and protects the spark plug from contamination by engine coolant
 Prevents coolant intrusion into the spark plug well
 Maintains electrical insulation and correct plug orientation
 Helps preserve consistent ignition performance and combustion integrity

Spark plug tubes are subjected to age, heat, coolant chemicals, and vibration. Over time the tube can stiffen, crack, or lose sealing effectiveness, allowing coolant to seep into the plug well. This often leads to misfires, poor starting, coil damage, or electrical shorts, and is a common service item on aging Porsche M96 engines. Replacing compromised tubes with a high-quality OE Match spark plug tube restores the correct seal and prevents expensive ignition coil or wiring damage, especially during engine rebuilds, head gasket services, or preventative maintenance.

When to replace:
  During cylinder head removal or service
  Evidence of coolant in spark plug wells
  Misfires or ignition issues traced to moisture/coolant
  Cracked, brittle, or deteriorated tube material
  Preventive refresh on high-mile engines

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99610532552
99970734341
99970721540

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99917013090/1::1
Product Information
Product Information
Spark Plug FGR 5NQE.
6 Required per engine. Price is for each.

bosch

Fits:
Porsche 991
Porsche Boxster 981
Porsche Boxster Spyder 2016

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99917013090
99917015190
0242245581

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99917015190
Product Information
Product Information
Spark Plug FGR 5NQE.
x6 Required Per Engine.
Price Is For Each.

Fits:
Porsche 991.1 Carrera MKI 2012>>2016
Porsche 981 Boxster 2012>>2016
Porsche 981 Boxster Spyder 2016>>2016
Porsche 981 Cayman 2014>>2016
Porsche 981 Cayman GT4 2016>>2016

Diagram Ref No 2


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99917015190
99917015190
0242245581

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99917020791
Product Information
Product Information
Spark Plug 14FGR 6KQU. 6 Required per engine. Price is for each.

porsche

Fits:
Porsche 986 Boxster 2.7L 2000-04
Porsche 986 Boxster S 3.2L 2000-04
Porsche 996 Carrera 3.4L >>2001

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99917020791
99917020791
99917021890

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99917020791/2
Product Information
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Spark plug 14FGR 6KQU.
6 Required per engine. Price is for each.

beru

Fits:
Porsche 986 Boxster 2.7L 2000-04
Porsche 986 Boxster S 3.2L 2000-04
Porsche 996 Carrera 3.4L >>2001

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99917020791
99917020791
99917021890

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Special Order item
99917022390
Product Information
Product Information
Spark Plug FGR 5KQEO.
6 Required per engine. Price is for each.

porsche

Fits:
Porsche 996 Carrera 3.6L 2001>>
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.2L 2005-08
Porsche 997 Carrera 3.6L / 3.8L 2005-08

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99917022390
99917022390
0242245559
9991700IK22

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Special Offer
99917022390/1
Product Information
Product Information
Spark Plug FGR 5KQEO.
6 Required per engine. Price is for each.

bosch

Fits:
Porsche 996 Carrera 3.6L 2001>>
Porsche 987 Boxster 2.7L / 3.2L 2005-08
Porsche 987C Cayman 2.7L / 3.2L 2005-08
Porsche 997 Carrera 3.6L / 3.8L 2005-08

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99917022390
99917022390
0242245559

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Special Order item
99917020190
Product Information
Product Information
Spark Plug 14FR 7 LDU.
6 Required per engine. Price is for each.

porsche

Fits:
Porsche Boxster 986 2.5L 1997-99

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99917020190
99917020190

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99917020190/1
Product Information
Product Information
Spark plug, 14FR 7 LDU.
6 Required per engine. Price is for each.

Fits:
Porsche Boxster 986 2.5L 1997-99

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99917020190
99917020190

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99917020190/2
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Product Information
BOSCH Spark Plug Multi-Ground FR7 LDC+.
6 Required per engine. Price is for each.

bosch

Fits:
Porsche Boxster 986 2.5L 1997-99


- 50 percent longer life than traditional copper core spark plugs

- Exclusive Yttrium extruded copper core center electrode increases resistance to spark erosion

- Tapered, v-profile nickel chromium ground electrode for consistent performance and prolonged service life

Related reference numbers
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99917020190
99917020190
0242235668

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Special Order item
99917013090
Product Information
Product Information
Spark plug FGR5NQE04

porsche

Fits:
Porsche 987 Boxster MKII 2009>>
(6 Required)
Porsche 987C Cayman MKII 2009>>
(6 Required)
Porsche 987C Cayman R
(6 Required)
Porsche 997 MKII Carrera 2009>>
(6 Required)

Porsche 957 (MKII) Cayenne S / GTS 4.8L 2007>> [Chassis number: M905541>> and MG904965>>] (8 Required)
Porsche 958 (MKIII) Cayenne S 4.8L 2011>> (8 Required)

Porsche 970 Panamera 3.6L V6 2WD (6 Required)
Porsche 970 Panamera 4 3.6L V6 4WD (6 Required)
Porsche 970 Panamera S 4.8L V8 (8 Required)
Porsche 970 Panamera 4S 4.8L V8 (8 Required)


Price shown is for each spark plug.

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

99917013090
99917013090
99917012290
99917015190

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Special Offer
99917013090/1
Product Information
Product Information
Spark Plug FGR5NQE04

bosch

Fits:
Porsche 987 Boxster MKII 2009>>
(6 Required)
Porsche 987C Cayman MKII 2009>>
(6 Required)
Porsche 987C Cayman R
(6 Required)
Porsche 997 MKII Carrera 2009>>
(6 Required)

Porsche 957 (MKII) Cayenne S / GTS 4.8L 2007>> [Chassis number: M905541>> and MG904965>>] (8 Required)
Porsche 958 (MKIII) Cayenne S 4.8L 2011>> (8 Required)

Porsche 970 Panamera 3.6L V6 2WD (6 Required)
Porsche 970 Panamera 4 3.6L V6 4WD (6 Required)
Porsche 970 Panamera S 4.8L V8 (8 Required)
Porsche 970 Panamera 4S 4.8L V8 (8 Required)


Price shown is for each spark plug.

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99917013090
99917013090
999 170 130 90
999.170.130.90
99917012290
99917015190

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DISPLAYING 33 to 45 (of 45 products)
1 2 3
Also found on these pages
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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