BMW Electrical Sensors, Switches, & Relays for BMW 1 Series

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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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Turner E9x Cowl Delete Kit
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Turner Motorsport - Corporate Logo
T#:1809115
Part#: 007629LA09KT
In Stock
Sale - Save 25% $ 420.95

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06-14-2026

$ 315.71 USD
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$ 420.95

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$ 315.71 USD
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Get rid of all your plastic in your engine bay for a cleaner look! Completely eliminates the bulky, obtrusive cabin filter housing for more room underhood - offering more room to access the engine. Compliment your engine bay and hide away the exposed ECU.
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Turner ECU/ Brake Master Cover Set - E9x
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T#:1809112
Part#: 007629LA03
In Stock
Sale - Save 25% $ 178.99

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

$ 134.24 USD
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Sale - Save 25%
$ 178.99

This product was last offered at the strikethrough price on
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$ 134.24 USD
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Our ECU Cover incorporates beauty with OE function. Designed in-house by our industry leading engineering staff, the E9x Turner ECU Cover incorporates beauty with OE function. Made from a heat resistant, textured matte black polymer material, this cover is sure to be turning heads! This cover gives your engine bay the look it should have came with from the factory and hides away the exposed ECU while helping protect it from the elements. We provide a simple cover that installs directly on top of the ECU bracket for an OEM plus look! Installation is a breeze, simply remove screws from the ECU bracket on either side, line up the ECU cover, and hand tighten the screws back on. Add a flash of style and elegance under your hood with our ECU Cover!
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Turner Motorsport Plug-and-Play IAT Relocation Kit - N52
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Reduces the effects of heat soak.
Turner Motorsport - Corporate Logo
T#:568950
Part#: 025451TMS05
In Stock
Sale - Save 25% $ 181.99

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

$ 136.49 USD
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Sale - Save 25%
$ 181.99

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

$ 136.49 USD
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What can you do to get rid of this heat soak? Turner designed an IAT relocation kit that moves the intake air temp sensor to a cooler location. Mounting the sensor further away from the heat source and isolating it from the MAF housing, it can both resist the effects of heat soak longer and respond to temperature changes more quickly. The result is you’ll experience reduced torque loss and more consistent power output when you’re pushing your engine hard.
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Turner Cowl Delete Harness Mounting Bracket - E9x
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T#:1809114
Part#: 007629LA02
In Stock
Sale - Save 25% $ 143.99

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

$ 107.99 USD
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Sale - Save 25%
$ 143.99

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

$ 107.99 USD
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Turner E9x Cowl Delete Harness Mounting Bracket mounts to factory bolt holes; it is an easy no-drill install that creates a solid location to tie back your engine harness. However, removing the cowl introduces the possibility of dirt and debris entering your cabin. To solve this issue we suggest pairing it with Burger's Cabin/Cowl Delete Filters. These are small, dry, and maintenance-free filters that both add a finished look to your engine bay and prevent debris from entering the cabin.
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B58 Performance Ignition Coil Conversion Kit - BMW N54
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Turner Motorsport - Corporate Logo
T#:35559433
Part#: 053328LA
In Stock
Sale - Save 6% $ 465.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 436.04 USD
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Sale - Save 6%
$ 465.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 436.04 USD
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Transform your N54-powered BMW with the Turner Motorsport B58 Ignition Coil Conversion Kit—the ultimate solution for ignition system reliability and performance. Designed to eliminate the notorious misfires and power loss caused by factory OE pencil-style ignition coils, this kit is a game-changer for stock and modified vehicles alike. Whether you're chasing more power or improved drivability, the B58 ignition coils deliver up to 2.3x more spark energy, unleashing the full potential of your engine.

Why upgrade? The answer is simple: B58 ignition coils outperform all other ignition upgrades on the market with unparalleled spark energy and reliability. Ideal for high-performance builds or daily drivers, this kit eliminates common ignition problems while supporting increased power demands from software tunes like MHD or BM3. Plus, with the included plug-and-play wiring harness and proprietary boots, installation is seamless—no cutting or splicing is required.

Features:

Up to 2.3x More Spark Energy: Maximizes overall performance, offering sufficient output for heavily modified engines.
Plug-and-Play Installation: Includes custom brackets, wiring harnesses, and boots designed for factory mounting locations—no modifications needed.
DME Compatibility: Compatible with factory engine management software for hassle-free integration.
Rugged Durability: Bolt-on brackets are precision-machined from 6061-T6 aluminum with a sleek black anodized finish for a premium look and long-lasting performance.
Proprietary Design: Boots feature a built-in 1k OHM resistor to prevent electrical contact failures commonly seen in other kits.
Kit Contents:

(6) Turner Motorsport B Series Ignition Coils for N554/N55
(6) Turner Motorsport B58 Ignition Coil Conversion Wiring Harnesses
(6) Turner Motorsport B58 Ignition Coil Conversion Brackets
Optional Kit Selections:

Spark Plugs:
Bosch ZGR6STE2 (OEM)
NGK 97968 (One Step Colder)
NGK 97506 (Two Steps Colder)
Spark Plug Socket:
Schwaben 14mm 12pt Magnetic Socket
Schwaben 14mm 12pt Swivel Socket
Turner Motorsport offers a comprehensive installation guide, including detailed removal instructions and high-resolution images.

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Turner ECU/ Brake Master Cover Set - E9x
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Turner Motorsport - Corporate Logo
T#:3136218
Part#: 007629LA10KT
In Stock
Sale - Save 25% $ 182.97

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

$ 137.23 USD
Free Shipping
Sale - Save 25%
$ 182.97

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

$ 137.23 USD
Free Shipping
Our ECU Cover incorporates beauty with OE function. Designed in-house by our industry leading engineering staff, the E9x Turner ECU Cover incorporates beauty with OE function. Made from a heat resistant, textured matte black polymer material, this cover is sure to be turning heads! This cover gives your engine bay the look it should have came with from the factory and hides away the exposed ECU while helping protect it from the elements. We provide a simple cover that installs directly on top of the ECU bracket for an OEM plus look! Installation is a breeze, simply remove screws from the ECU bracket on either side, line up the ECU cover, and hand tighten the screws back on. Add a flash of style and elegance under your hood with our ECU Cover!
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B58 Performance Ignition Coil Conversion Kit - Early N55
For Vehicles Produced Before 01/2011
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Turner Motorsport - Corporate Logo
T#:36235522
Part#: 053681LA
In Stock
Sale - Save 11% $ 465.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 413.09 USD
Free Shipping
Sale - Save 11%
$ 465.99

This product was last offered at the strikethrough price on
01-03-2026

Starting at $ 413.09 USD
Free Shipping

Transform your N55-powered BMW with the Turner Motorsport B58 Ignition Coil Conversion Kit—the ultimate solution for ignition system reliability and performance. Designed to eliminate the notorious misfires and power loss caused by factory OE pencil-style ignition coils, this kit is a game-changer for stock and modified vehicles alike. Whether you're chasing more power or improved drivability, the B58 ignition coils deliver up to 2.3x more spark energy, unleashing the full potential of your engine.

Why upgrade? The answer is simple: B58 ignition coils outperform all other ignition upgrades on the market with unparalleled spark energy and reliability. Ideal for high-performance builds or daily drivers, this kit eliminates common ignition problems while supporting increased power demands from software tunes like MHD or BM3. Plus, with the included plug-and-play wiring harness and proprietary boots, installation is seamless—no cutting or splicing is required.

Features:

Up to 2.3x More Spark Energy: Maximizes overall performance, offering sufficient output for heavily modified engines. Plug-and-Play Installation: Includes custom brackets, wiring harnesses, and boots designed for factory mounting locations—no modifications needed. DME Compatibility: Compatible with factory engine management software for hassle-free integration. Rugged Durability: Bolt-on brackets are precision-machined from 6061-T6 aluminum with a sleek black anodized finish for a premium look and long-lasting performance. Proprietary Design: Boots feature a built-in 1k OHM resistor to prevent electrical contact failures commonly seen in other kits. Kit Contents:

(6) Turner Motorsport B58 Ignition Coils (6) Turner Motorsport B58 Ignition Coil Conversion Boots (6) Turner Motorsport B58 Ignition Coil Conversion Wiring Harnesses (3) Turner Motorsport B58 Ignition Coil Conversion Brackets Optional Kit Selections:

Spark Plugs: Bosch ZGR6STE2 (OEM) NGK 97506 (One Step Colder) Spark Plug Socket: Schwaben 14mm 12pt Magnetic Socket Schwaben 14mm 12pt Swivel Socket Turner Motorsport offers a comprehensive installation guide, including detailed removal instructions and high-resolution images. Visit the Installation Tab for the step-by-step guide to completing your ignition system upgrade.

Say goodbye to misfires and hello to unparalleled ignition performance with the Turner Motorsport B58 Ignition Coil Conversion Kit. Designed with precision and engineered for reliability, it’s the ultimate upgrade for your N55-powered BMW!

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B58 Performance Ignition Coil Conversion Kit - Late N55
For Vehicles with a Production Date from 01/2011
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Turner Motorsport - Corporate Logo
T#:45210311
Part#: 051421LA01
In Stock
Sale - Save 6% $ 465.99

This product was last offered at the strikethrough price on
03-10-2026

Starting at $ 436.04 USD
Free Shipping
Sale - Save 6%
$ 465.99

This product was last offered at the strikethrough price on
03-10-2026

Starting at $ 436.04 USD
Free Shipping

Transform your N55-powered BMW with the Turner Motorsport B58 Ignition Coil Conversion Kit—the ultimate solution for ignition system reliability and performance. Designed to eliminate the notorious misfires and power loss caused by factory OE pencil-style ignition coils, this kit is a game-changer for stock and modified vehicles alike. Whether you're chasing more power or improved drivability, the B58 ignition coils deliver up to 2.3x more spark energy, unleashing the full potential of your engine.

Why upgrade? The answer is simple: B58 ignition coils outperform all other ignition upgrades on the market with unparalleled spark energy and reliability. Ideal for high-performance builds or daily drivers, this kit eliminates common ignition problems while supporting increased power demands from software tunes like MHD or BM3. Plus, with the included plug-and-play wiring harness and proprietary boots, installation is seamless—no cutting or splicing is required.

Features:

Up to 2.3x More Spark Energy: Maximizes overall performance, offering sufficient output for heavily modified engines. Plug-and-Play Installation: Includes custom brackets, wiring harnesses, and boots designed for factory mounting locations—no modifications needed. DME Compatibility: Compatible with factory engine management software for hassle-free integration. Rugged Durability: Bolt-on brackets are precision-machined from 6061-T6 aluminum with a sleek black anodized finish for a premium look and long-lasting performance. Proprietary Design: Boots feature a built-in 1k OHM resistor to prevent electrical contact failures commonly seen in other kits. Kit Contents:

(6) Turner Motorsport B Series Ignition Coils for N554/N55 (6) Turner Motorsport B58 Ignition Coil Conversion Wiring Adapters (3) Turner Motorsport B58 Ignition Coil Conversion Brackets Optional Kit Selections:

Spark Plugs: Bosch ZGR6STE2 (OEM) NGK 97506 (One Step Colder) Spark Plug Socket: Schwaben 14mm 12pt Magnetic Socket Schwaben 14mm 12pt Swivel Socket Turner Motorsport offers a comprehensive installation guide, including detailed removal instructions and high-resolution images.

Say goodbye to misfires and hello to unparalleled ignition performance with the Turner Motorsport B58 Ignition Coil Conversion Kit. Designed with precision and engineered for reliability, it’s the ultimate upgrade for your N55-powered BMW!

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URO Positive Cable Battery Connection Pole
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T#:42436713
Part#: 61129217031
In Stock
$ 130.99 USD
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If your BMW has been in an accident and the Battery Safety Terminal (BST) has been triggered, you'll need a new positive battery cable connection to restore power and get the vehicle running again.

URO Power Distribution Box With Fuse - BMW E8X 1
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URO - Corporate Logo
T#:49822552
Part#: 61146971370
In Stock
New Item
$ 91.99 USD
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Ensures the appropriate amount of power is sent to electrical vehicle components.
URO Environmental Air Catalyst (EAC) Sensor - 17117537292
For SULEV Vehicles Equipped with the N51 Engine Only
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T#:28171552
Part#: 17117537292R
In Stock
$ 271.99 USD
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$ 271.99 USD
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Replacing your factory environmental air catalyst sensor can be quite a headache when it's integrated into the radiator, causing a 2AD8 trouble code. But fear not! URO Parts has a solution with their standalone replacement sensor, making this repair much more manageable and cost-effective.

Key Features:

Guaranteed Fitment: Designed to fit perfectly, ensuring compatibility with your vehicle. Direct OE Replacement: Restores your factory cooling fan sensor's functionality seamlessly. Plug-and-Play Installation: Easy to connect, saving you time and hassle during installation. High-Quality Construction: Crafted from durable materials to withstand the heat of the engine compartment and cooling system. Low Electrical Resistance: Alloy conductors reduce resistance for accurate sensor operation. Reliable and Long-Lasting: Tested for reliability and engineered for a long service life. If you're dealing with a "direct ozone reduction catalyst temperature gradient too low" SES code, upgrading to this high-quality sensor from URO Parts is the solution you need.

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URO Eccentric Shaft Sensor - 11377524879
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T#:28171561
Part#: 11377524879
In Stock
$ 174.99 USD
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The eccentric shaft sensor plays a vital role in controlling valvetronic timing and is often a common issue in BMW vehicles. If you've noticed difficult starts, reduced fuel economy, and overall engine power and performance issues, this component could be the culprit.

Key Features:

Guaranteed Fitment: Designed to fit perfectly, ensuring compatibility with your vehicle. Accurate Positioning: Provides precise shaft position control, even at high RPMs. Direct OE Replacement: Easy to install with its direct-fit design, saving time and effort. Low Electrical Resistance: Alloy connector conductors minimize resistance, ensuring accurate signal transmission. Upgrade to this quality replacement eccentric shaft sensor to restore optimal engine performance and address the symptoms associated with a faulty sensor.

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Blower Motor Temperature Sensor - Priced Each
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T#:403094
Part#: 64116930015
In Stock
$ 15.99

This product was last offered at the strikethrough price on
06-29-2026

$ 13.99 USD
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$ 15.99

This product was last offered at the strikethrough price on
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$ 13.99 USD
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Part of the HVAC system
Fluid Level Sensor
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T#:369510
Part#: 17137524812
In Stock
$ 10.59 USD
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This sensor is used in multiple locations, depending on model: coolant level, washer level, and power steering level
Oil Pressure Switch - M12x1.5
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T#:373033
Part#: 12611710509
In Stock
$ 8.39 USD
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Replacement oil pressure switch found on most BMWs

Outdoor Temperature Sensor / Probe
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T#:373239
Part#: 65816905133
In Stock
$ 13.99 USD
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Common fix for incorrect OBC temperature readings

URO Battery Hold Down Clamp - BMW E92 335xi
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T#:37925905
Part#: 61217566618
In Stock
$ 12.99 USD
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URO Battery Hold Down Clamp - BMW E92 335xi

URO Battery Hold Down Clamp - BMW E92 335xi is a premium solution for repairing your damaged or broken factory battery hold down. This new clamp is designed to restore the proper positioning and securement of your vehicle's battery, ensuring it remains firmly in place during operation. Manufactured to meet OE specifications, it guarantees a perfect fit and easy installation. Made from high-quality materials, the URO Battery Hold Down Clamp is engineered to withstand harsh operating conditions, including intense vehicle heat and corrosive battery fumes, providing long-lasting durability and reliability.

Key Benefits:

  • Direct-fit OE replacement ensures easy installation and secure battery positioning
  • High-quality materials resist heat and corrosive battery fumes for enhanced durability
  • Restores battery hold down function, preventing battery movement during operation
  • Built to withstand harsh conditions for long-lasting reliability

With the URO Battery Hold Down Clamp - BMW E92 335xi, you can ensure your battery is securely held in place, contributing to the overall reliability and safety of your vehicle.

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Electrical Connector - Priced Each
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T#:367145
Part#: 61132359999
Ships in 1 Business Day
$ 18.99 USD
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2 pin used in many locations on late model BMWs

URO Positive Battery Cable
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T#:42436714
Part#: 61129217036
Ships in 1 Business Day
$ 140.99 USD
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$ 140.99 USD
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If your battery cable is damaged, this is the direct factory replacement you’ll need to restore proper function.
Alternator Pulley - Valeo Alternator only - URO
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T#:578905
Part#: 12317516105U
Ships in 1 Business Day
$ 34.99 USD
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The solution to a noisy, failing pulley

Bushing Contact With Wire Lead - Priced Each
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T#:14783536
Part#: 61130005199
In Stock
$ 3.99 USD
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Crankshaft Position Sensor
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T#:35863159
Part#: 13627525015
Ships in 1 Business Day
$ 28.99 USD
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Having a crank but no starting issue? This sensor is often the culprit