Purchase the wires you need for your electrical bulkhead fitting here. Featuring FEP wire pre-cut to 24" 18 Gauge wire with the appropriate terminal pre-crimped and ready to install!
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Sluggish O2 sensors don't just trigger annoying Check Engine Lights; they cause poor fuel economy, rough idling, and can even degrade your expensive catalytic converters over time.
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There is nothing worse than turning the key and getting the agonizing, slow crank of a dying starter.
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If your BMW is throwing a CEL for fuel trim adaptations, oxygen sensors degrade from extreme exhaust heat and carbon buildup, sending lazy or incorrect data to your DME.
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Brand:
ES#:
5481586
Mfg#:
11787558055/73KT
In Stock
$338.99
This product was last offered at the strikethrough price on 07-08-2026
With award-winning Swedish technology, the dual input D250SE allows you to enjoy your vehicle more
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Brand:
ES#:
4492942
Mfg#:
40-315
In Stock
Limited Qty Sale
$569.99
This product was last offered at the strikethrough price on 05-02-2026
The Mishimoto BMW 550i Ignition Coil is a high-quality replacement designed to restore the factory performance and fuel efficiency of your 4.4L V8 engine.
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Designed to restore factory-level performance and fuel efficiency to a wide range of BMW models.
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OE-quality Crankcase Vent Heater Connector (also known as the "Angle Connector") designed for the BMW N51, N52, and N52N engines.
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With automotive electrical content growing yearly, it has never been more important to keep your charging and electrical system in top working condition. ECS Tuning stocks a huge and constantly growing inventory of electrical sensors, electric motors, and electronic actuators from original equipment and name-brand aftermarket suppliers.
Lifetime Replacement
