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"
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
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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
Add to Wish List
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.
Spark Plug Socket 16MM 12 Point Swivel
Spark Plug Socket 16MM 12 Point Swivel
CTA Tools - Corporate Logo
T#:640924
Part#: CTA4329
In Stock
$ 24.28 USD
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$ 24.28 USD
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Swivel Spark Plug Socket 16MM
3/8" Dr. 5/8" Extended Spark Plug Socket
3/8" Dr. 5/8" Extended Spark Plug Socket
Performance Tool - Corporate Logo
T#:2242226
Part#: W80533
Ships in 1 Business Day
$ 20.25 USD
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$ 20.25 USD
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Extended socket length reaches confined areas.
Ignition Service Kit - S65 E90, E92, M3
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
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$ 2,225.99 USD
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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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Spark Plug Gap Gauge
Spark Plug Gap Gauge
Performance Tool - Corporate Logo
T#:1855998
Part#: W80535
Ships in 1 Business Day
$ 1.99

This product was last offered at the strikethrough price on
08-26-2026

$ 1.54 USD
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$ 1.54 USD
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Easy to read markings to set gaps quickly and easily.
CTA Tools - Spark Plug Gapper
CTA Tools - Spark Plug Gapper
CTA Tools - Corporate Logo
T#:641654
Part#: CTA3235
Ships in 1 Business Day
$ 1.99 USD
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$ 1.99 USD
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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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9-Wire Spark Plug Gap Gauge
9-Wire Spark Plug Gap Gauge
CTA Tools - Corporate Logo
T#:641657
Part#: CTA3238
In Stock
$ 3.99 USD
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$ 3.99 USD
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Always check gap on your new spark plugs
S65 Ignition Service Kit - E9X M3
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 $49 and up
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$ 2,220.99 USD
Free Shipping on orders $49 and up
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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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