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BMW Electrical Sensors, Switches, & Relays

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

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Bosch Starter Motor With Hardware
Bosch Starter Motor With Hardware
Packaged by Turner - Corporate Logo
T#:56110332
Part#: SR0492NKT4
In Stock
New Item
$ 273.99

This product was last offered at the strikethrough price on
08-14-2026

$ 261.99 USD
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$ 261.99 USD
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At the core is a brand-new Bosch Starter Motor, engineered to withstand extreme operating conditions while delivering immediate cranking speed. This kit includes also the required Genuine BMW Aluminum Mounting Screw Set.
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Knock Sensor
Knock Sensor
Bosch - Corporate Logo
T#:54388475
Part#: 13627636937
In Stock
New Item
$ 29.99 USD
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$ 29.99 USD
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Keep your ignition timing razor-sharp and your engine safe from destructive detonation. This replacement Knock Sensor acts as your engine's first line of defense, constantly listening for pre-ignition "pinging" or knocking.
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Mishimoto Ignition Coil, 8-Pack - BMW N63 & S63 Engines
Mishimoto Ignition Coil, 8-Pack - BMW N63 & S63 Engines
Mishimoto - Corporate Logo
T#:51075067
Part#: MMIG-BMW-1108
Ships in 3 Business Days
New Item
$ 274.99 USD
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$ 274.99 USD
Free Shipping on orders $49 and up
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The Mishimoto Ignition Coil (MMIC-BMW-11B) focuses on durability and electrical precision.
Intensity Lithium-ION Battery - i34RX - 11.5lbs
Intensity Lithium-ION Battery - i34RX - 11.5lbs
Braille - Corporate Logo
T#:54388454
Part#: I34RX
Ships in 6 Business Days
New Item
$ 949.99 USD
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$ 949.99 USD
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Whether you're building a dedicated track weapon or upgrading your street machine for ultimate reliability, unsprung and upper-chassis weight is the enemy of performance. Positioned high up in the engine bay or rear corners, a heavy factory battery negatively impacts your car's center of gravity.
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Mishimoto Ignition Coil - Single - BMW M54, N20, N52, N54, N55, N62, S54, S62
Mishimoto Ignition Coil - Single - BMW M54, N20, N52, N54, N55, N62, ...
Mishimoto - Corporate Logo
T#:51075090
Part#: MMIG-BMW-02
Ships in 3 Business Days
New Item
$ 72.99 USD
Free Shipping on orders $49 and up
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$ 72.99 USD
Free Shipping on orders $49 and up
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The Mishimoto BMW Ignition Coil is built to handle the intense heat cycles found in BMW’s modern turbocharged and naturally aspirated engines.

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