BMW Electrical Sensors, Switches, & Relays for BMW 4 Series F33 (2014+)

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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 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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Integrated Power Supply Module
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:37757285
Part#: 12638645514
In Stock
$ 198.09

This product was last offered at the strikethrough price on
06-10-2026

$ 169.99 USD
Free Shipping on orders $49 and up
$ 169.99 USD
Free Shipping on orders $49 and up
Located on top of the battery
URO Manifold Absolute Pressure (MAP) Sensor - BMW N54 N20 N26 S55 S63...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:36032311
Part#: 13628644433
In Stock
$ 71.99 USD
Free Shipping on orders $49 and up
$ 71.99 USD
Free Shipping on orders $49 and up
The MAP sensor, or manifold absolute pressure sensor, works with the engine computer to set the fuel curve and give readings to the engine computer. If yours is faulty, it may cause improper running, rich or lean fuel curves, or other general performance issues. Replace yours with this unit to keep your engine running at full potential. For N54 applications, you will need adapter harness T#583821- This TMAP sensor is typically used in high-boost applications for the N54
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Hella - Corporate Logo
T#:592707
Part#: 2768551
In Stock
$ 30.99 USD
Free Shipping on orders $49 and up
Disc Type High-Tone, 12 V, 400 Hz with Bracket

Hella - Corporate Logo
T#:590880
Part#: 2768082
In Stock
$ 36.99 USD
Free Shipping on orders $49 and up
Disc Type Low-Tone, 12 V, 335 Hz with Bracket
OEM VDO Camshaft Position Sensor - BMW B48/46 B58 N20/26
We Price Match - Give Us A Call or Chat!
VDO - Corporate Logo
T#:19197278
Part#: 13627633958
In Stock at Vendor
$ 115.99 USD
Free Shipping on orders $49 and up
Camshaft position sensors are electrical sensors that monitor the rotational speed and position of a camshaft. This signal is used by the DME to control fuel delivery and spark timing. If your camshaft position sensor is faulty, it can result in check engine lights, rough idle or running conditions, limp mode, or no starts. Replace your cam position sensor with this high-quality replacement to restore smooth engine operation.
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Hella - Corporate Logo
T#:592708
Part#: 3001651
In Stock at Vendor
$ 143.99

This product was last offered at the strikethrough price on
05-07-2026

$ 139.99 USD
Free Shipping on orders $49 and up
$ 139.99 USD
Free Shipping on orders $49 and up
Get noticed with this air horn kit from Hella!
Facet - Corporate Logo
T#:39059259
Part#: 13627843531
In Stock at Vendor
$ 118.99

This product was last offered at the strikethrough price on
05-07-2026

$ 114.99 USD
Free Shipping on orders $49 and up
$ 114.99 USD
Free Shipping on orders $49 and up
This is a replacement Manifold Absolute Pressure sensor Located on the charge air cooler. The MAP controls the amount of fuel that goes through the injectors based on the pressure of air at the intake manifold. If your vehicle is giving you a MAP code, replace it immediately to ensure you get the best gas mileage and performance. It is common for this part to fail slowly and cause poor fuel mileage and hampered performance. When it fails, the vehicle will stutter and stall as it falls into a limp mode. One way to check if your MAP is bad is to unplug the connector before starting your car. If it idles well (compared to a previous poor idle), your MAP sensor likely needs to be replaced. If you let this maintenance part go, your fuel economy will suffer as too much fuel is going into the engine and not being burned. A great way to give your vehicle an efficiency boost.
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Liqui-Moly Battery Clamp Grease - 50 grams
We Price Match - Give Us A Call or Chat!
Liqui-Moly - Corporate Logo
T#:1195997
Part#: 20244
In Stock
14% off MSRP $ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.85 USD
Free Shipping on orders $49 and up
14% off MSRP
$ 7.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 6.85 USD
Free Shipping on orders $49 and up
Excellent corrosion protection for your battery and other connections

Electrical Connector - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:367145
Part#: 61132359999
Ships in 1 Business Day
$ 18.99 USD
Free Shipping on orders $49 and up
2 pin used in many locations on late model BMWs
Hella - Corporate Logo
T#:592718
Part#: 965400001
Ships on Aug 7, 2026
$ 14.99 USD
Free Shipping on orders $49 and up
12V 30A SPST relay with bracket
Hella - Corporate Logo
T#:592716
Part#: 7424011
In Stock
$ 17.99 USD
Free Shipping on orders $49 and up

Upgrade the sound of your BMW or MINI with the Hella Horn - High-Tone. This high-quality horn delivers a powerful and attention-grabbing sound, enhancing safety on the road. Designed for easy installation, it provides a quick and effective way to improve the audible presence of your vehicle.

  • Powerful and attention-grabbing sound
  • Enhances safety on the road
  • Easy installation for convenience
  • Compatible with BMW and MINI models
  • High-quality construction for durability

Enhance the audible presence of your BMW or MINI with the Hella Horn - High-Tone, ensuring you're heard when it matters most.

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Hella - Corporate Logo
T#:28869559
Part#: 7424001
In Stock
$ 17.99 USD
Free Shipping on orders $49 and up
Universal fit. Not direct fit.
Camshaft Position Sensor
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:34348685
Part#: 13627633958
Ships in 1 Business Day
$ 44.99 USD
Free Shipping on orders $49 and up

The URO Camshaft Position Sensor is an essential component for BMW engines, providing precise data on camshaft position to ensure accurate fuel injection timing and peak engine performance. Designed to meet OEM specifications, this sensor helps optimize ignition timing, contributing to smoother acceleration, enhanced fuel economy, and overall engine efficiency. Available from Turner Motorsport, the URO Camshaft Position Sensor is the ideal replacement part for BMW owners aiming to maintain optimal performance and reliability.

  • Ensures accurate timing for smooth acceleration and responsive power
  • Optimizes fuel injection timing, improving fuel efficiency
  • Built to OEM standards for precise fit and easy installation in BMW models
  • Supports reliable ignition timing for dependable engine operation
  • Durable construction withstands high engine temperatures for lasting performance
  • Available from Turner Motorsport, a trusted source for BMW replacement parts

The URO Camshaft Position Sensor is a cost-effective solution for BMW owners looking to keep their engine running smoothly and efficiently, delivering the performance and dependability they expect.

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Vargas Turbo Technologies - Corporate Logo
T#:51672717
Part#: VTT-MAP-HARNESS
Ships in 10 Business Days
New Item
$ 59.99 USD
Free Shipping
$ 59.99 USD
Free Shipping
As part of the VTT-FAB fabrication line, this extension harness is designed for builders and tuners who need flexibility.

Bapmic - Corporate Logo
T#:54388517
Part#: 61129259425
In Stock at Vendor
New Item
$ 126.99 USD
Free Shipping on orders $49 and up
On the track or on the street, your BMW’s electrical architecture demands absolute consistency. A degraded positive battery cable introduces unwanted resistance, leading to weak starts, alternator strain, and erratic module behavior. When it’s time to replace a compromised factory cable, you don’t need over-hyped marketing—you need a part that fits precisely and restores factory grid integrity.
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Vargas Turbo Technologies - Corporate Logo
T#:51813310
Part#: VTT-FAB-HC
Ships in 10 Business Days
New Item
$ 49.99 USD
Free Shipping
$ 49.99 USD
Free Shipping
Simplify your next fabrication project with the VTT-FAB series Coolant Extension Harness.
Hitachi - Corporate Logo
T#:48815454
Part#: 13627525014
Ships in 6 Business Days
$ 40.00 USD
Free Shipping on orders $49 and up
The camshaft position sensor communicates the position of the camshaft to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the cam position sensor.
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Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 6 Business Days
New Item
$ 184.99 USD
Free Shipping on orders $49 and up
Engine cranks but doesn't start? This sensor is often the issue.
Hitachi - Corporate Logo
T#:48850081
Part#: 13627806782
Ships in 6 Business Days
New Item
$ 81.99 USD
Free Shipping on orders $49 and up
Tells the computer whether the timing is correct in the engine.

Vargas Turbo Technologies - Corporate Logo
T#:52129729
Part#: VTT56BSENSKIT64
Ships in 10 Business Days
New Item
$ 209.99 USD
Free Shipping
$ 209.99 USD
Free Shipping
The VTT 6-Bar MAP sensor kit provides the necessary overhead to monitor boost levels with a linear voltage scale that makes software calibration straightforward.

Meyle - Corporate Logo
T#:55353615
Part#: 12141716055
Special Order: No Guaranteed ETA
New Item
$ 28.99 USD
$ 28.99 USD
This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.
Hella - Corporate Logo
T#:583197
Part#: 61219117877
Special Order: No Guaranteed ETA
$ 150.99 USD
Free Shipping
$ 150.99 USD
Free Shipping
Cable for battery
Hella - Corporate Logo
T#:599887
Part#: 13627602038
Special Order: No Guaranteed ETA
$ 151.99 USD
Free Shipping
$ 151.99 USD
Free Shipping


Meyle - Corporate Logo
T#:55030834
Part#: 3148100013
Ships on Oct 30, 2026
New Item
$ 36.99 USD
Free Shipping on orders $49 and up
This Meyle Crankshaft Position Sensor is the perfect solution for restoring the critical engine speed data your ECU relies on.
Meyle - Corporate Logo
T#:52762518
Part#: 314810014
Special Order: No Guaranteed ETA
New Item
$ 19.99 USD
Free Shipping on orders $49 and up
Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.
Meyle - Corporate Logo
T#:52621846
Part#: MPS0126
Special Order: No Guaranteed ETA
New Item
$ 29.99 USD
Free Shipping on orders $49 and up
The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.


Hitachi - Corporate Logo
T#:48815475
Part#: 13627595860
Back Ordered
$ 68.99 USD
Free Shipping on orders $49 and up
This is the crankshaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Hitachi sensor to restore peak performance.
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Ina - Corporate Logo
T#:42167226
Part#: EA0141
Back Ordered
$ 71.99 USD
Free Shipping on orders $49 and up
$ 71.99 USD
Free Shipping on orders $49 and up
Whether you're replacing a failing alternator pulley or performing preventive maintenance, this Alternator Pulley ensures your BMW continues to perform with factory precision and reliability.