Ignition for BMW E90 M3 S65 4.0L

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Your BMW's ignition system is critical for smooth engine operation. This category contains parts used in the BMW ignition system, including spark plugs, ignition coils, spark plug wires and boots, ignition rotors and caps, distributors and distributor caps. On most 1991 and later model BMWs, your car has what's known as a coil-on-plug system, where each cylinder has its own ignition coil that sits directly atop the spark plug (so you won't have spark plug wires on those BMWs.) A fresh set of spark plugs is an essential part of any BMW engine tune up.

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Bav Auto Spark Plug Socket 12" x 5/8"
10X Entries Into Our F80 M3 Sweepstakes
Bav Auto Tools - Corporate Logo
T#:580385
Part#: B8800072
In Stock
Sale - Save 25% $ 37.99

This product was last offered at the strikethrough price on
05-03-2026

$ 28.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 37.99

This product was last offered at the strikethrough price on
05-03-2026

$ 28.49 USD
Free Shipping on orders $49 and up
Magnetic insert holds the spark plug securely in place for easy installation. Works great on many twin can engines where the spark plugs are recessed deep in the cylinder head.
CTA Tools - Corporate Logo
T#:640924
Part#: CTA4329
In Stock
$ 24.28 USD
Free Shipping on orders $49 and up
Swivel Spark Plug Socket 16MM
Ignition Service Kit - S65 E90, E92, M3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15677515
Part#: 12137841754-KT
Ships in 1-2 days
$ 2,264.99

This product was last offered at the strikethrough price on
06-08-2026

$ 2,225.99 USD
Free Shipping on orders $49 and up
$ 2,225.99 USD
Free Shipping on orders $49 and up
Your ignition system will start to fail with age, which will ruin your fuel economy as well as your performance. Turner Motorsport has created a kit that includes new coils, plugs, and hardware. This particular kit utilizes OEM and aftermarket components. See kit contents tab for a complete list of included components
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Gear Wrench - Corporate Logo
T#:587003
Part#: KDT164
In Stock
$ 10.99 USD
Free Shipping on orders $49 and up
Gauge and accurately alter the gap of your spark plugs.

3 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:33412931
Part#: 12527519996
In Stock
Sale - Save 25% $ 10.99

This product was last offered at the strikethrough price on
06-14-2026

$ 8.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 10.99

This product was last offered at the strikethrough price on
06-14-2026

$ 8.24 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the pencil-style ignition coil connector.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12527519996 - Commonly used for the pencil-style ignition coil connector.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

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NRW Design - Corporate Logo
T#:42403035
Part#: S65SPTOK
In Stock
$ 53.99 USD
Free Shipping on orders $49 and up
For BMW M3 owners demanding reliability and performance, the NRW Designs S65 Billet Spark Plug Tube Replacement Viton O-Ring Kit from Turner Motorsport offers a durable, leak-free solution that stands up to the demands of spirited driving and track use.
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CTA Tools - Corporate Logo
T#:641654
Part#: CTA3235
Ships in 1 Business Day
$ 1.99 USD
Free Shipping on orders $49 and up

CTA Tools - Spark Plug Gapper is an essential tool for accurately setting and measuring spark plug gaps, ensuring optimal engine performance. This precision tool is designed for both professional and DIY mechanics, providing reliable gap adjustments for a variety of engine applications.

  • Versatile Measurement Range: The ramp gauge measures gaps from .020 to .100 inches (0.50 to 2.5 mm), accommodating a wide range of spark plug specifications.
  • Precision Engineering: Engineered to deliver accurate gap settings, improving engine efficiency and performance.
  • Made in the USA: Crafted with high-quality materials to ensure durability and long-lasting performance.
  • Easy to Use: Simple design makes gap adjustments quick and straightforward, enhancing convenience in any workshop or garage setting.

Upgrade your toolset with the CTA Tools - Spark Plug Gapper to achieve precise spark plug gaps and optimize your engine’s performance.

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CTA Tools - Corporate Logo
T#:641657
Part#: CTA3238
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
Always check gap on your new spark plugs

S65 Ignition Service Kit - E9X M3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55569528
Part#: 12137841754KT5
Ships in 1-2 days
New Item
$ 2,245.99

This product was last offered at the strikethrough price on
09-14-2026

$ 2,220.99 USD
Free Shipping on orders $49 and up
$ 2,220.99 USD
Free Shipping on orders $49 and up
The Turner Motorsport S65 Ignition Service Kit restores ignition timing and ionic knock-sensing accuracy on the BMW E9X M3 S65 engine. Worn spark plugs alter cylinder electrical resistance, disrupting ionic current knock detection across the ignition coils. Replacing all eight NGK plugs, S65 coils, and applying AGS dielectric boot protector restores precise combustion and knock monitoring.
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