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Ignition for BMW E21 320i M10 1.8L

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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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Spark Plugs (9)

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Schwaben Extended 5/8" Spark Plug Socket

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T#:367321

Part#: S-3858-125

In Stock

Sale - Save 20% $ 25.99

This product was last offered at the strikethrough price on
05-02-2026

$ 20.79 USD

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Sale - Save 20%

$ 25.99

This product was last offered at the strikethrough price on
05-02-2026

$ 20.79 USD

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The Schwaben Extended Reach Spark Plug Socket is the perfect tool for removing 5/8-inch spark plugs with deeply recessed plugs.

The five inch long, rigid socket body provides solid engagement with the plug hex to prevent plug breakage.

Features:

Magnetic ring holds the spark plug but won't stick to the plug porcelain neck like sockets with cheap rubber inserts
Chrome plated with durable and attractive polished surface
Turn it with a 3/8-inch ratchet or a 19 mm (¾-inch) socket or box wrench at the external hex head
Outer diameter of socket is approximately 22mm

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Spark Plug Socket 16MM 12 Point Swivel

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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

Titan Swivel Spark Plug Socket Extension

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T#:797051

Part#: TIT62161

In Stock

$ 25.99 USD

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$ 25.99 USD

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Knurled shaft for better grip

3/8" Dr. 5/8" Extended Spark Plug Socket

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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.

Extended Spark Plug Socket

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T#:391150

Part#: SUU884506

Ships in 7 Business Days

$ 20.99 USD

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$ 20.99 USD

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3/8" drive socket with 5/8" opening for most spark plugs

Combination Feeler Gauge/Spark Plug Gapping Tool

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T#:587003

Part#: KDT164

In Stock

$ 18.99

This product was last offered at the strikethrough price on
12-09-2025

$ 10.99 USD

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$ 10.99 USD

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Gauge and accurately alter the gap of your spark plugs.

9-Wire Spark Plug Gap Gauge

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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

Wire Type Spark Plug Gapper .040 to .080

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T#:641655

Part#: LIS67900

Ships in 1 Business Day

$ 4.99 USD

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$ 4.99 USD

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Always check gap on your new spark plugs

Spark Plug Gap Gauge

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T#:1855998

Part#: W80535

Ships in 3 Business Days

$ 1.99 USD

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$ 1.99 USD

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Easy to read markings to set gaps quickly and easily.

CTA Tools - Spark Plug Gapper

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T#:641654

Part#: CTA3235

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$ 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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Ignition
- Spark Plugs (9)

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