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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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OBDI Conversion Part - Water Temp Sensor Wiring Adaptor
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Turner Motorsport - Corporate Logo
T#:508
Part#: TEN9989M50
In Stock
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$ 65.65 USD
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Made in the USA The TMS Water Temp Sensor Wiring Adaptor is needed when you are upgrading to OBD-I (1992-1995 components) on a 3.2 or 2.8 liter engine. These earlier engines use two separate water temp sensors in the head, one for the ECU and one for the instrument cluster. Most of the 3.2 and some of the 2.8 liter engines do not have two holes drilled in the head for the early water temp sensors. This is due to the fact that the 3.2 and 2.8 engines used a combined water temp sensor. So we designed a easy to use plug and play wiring harness. The benefits are: No cutting and splicing, no trying to fine plugs and pins. We also suggest using TMS "3.2 in a 3.0" Coolant Hose Adapter P/N: TEN9931007 to make your life easier.
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Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8
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Bremmen Parts - Corporate Logo
T#:395203
Part#: 12617508003
In Stock
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This product was last offered at the strikethrough price on
05-02-2026

$ 53.54 USD
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This is the oil level sensor / sender for BMW E46 E39 E60 E38 X3 X5 Z3 Z4 Z8.When this part fails it will illuminate a check light on the dash which indicates it needs to be replaced. Includes o-ring. This item fits the following BMWs: 1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi M3 2008+ E90 BMW 335d 1999-2003 E39 BMW 528i 525i 530i M5 1998-2003 E39 BMW 540i 2004-2005 E60 BMW 525i 530i 1998-2001 E38 BMW 740i 740il 750il 2004-2006 E85 BMW X3 2.5i X3 3.0i 2000-2006 E53 BMW X5 3.0i 2000-2003 E53 BMW X5 4.4i X5 4.6is 1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe 2003-2006 Z4 BMW Z4 2.5i Z4 3.0i 2000-2003 E52 BMW Z8
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Genuine BMW 5 Prong Salmon Relay - Multiple BMWs
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Genuine BMW - Corporate Logo
T#:5390
Part#: 12631742690
In Stock
7% off MSRP $ 24.65

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

$ 22.99 USD
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$ 24.65

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

$ 22.99 USD
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This relay is used for the SMG system on the E46 M3 and various applications including secondary air systems on other BMW's. If you find that your SMG-equipped E46 M3 is not starting, this is one of the first places to check as it controls power to the hydraulic unit (the car will not start without hydraulics). Buy one to fix the issue and buy a second so you're not stranded in the future!
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Main / ECU Relay - White - E30 E36 E39 E38 X5
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Genuine BMW - Corporate Logo
T#:10642
Part#: 61361729004
In Stock
4% off MSRP $ 25.01

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

$ 23.99 USD
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4% off MSRP
$ 25.01

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

$ 23.99 USD
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This is a Genuine BMW main relay for a variety of BMW models. The main relay powers vital systems in the car when the key is turned to the Start position. Things like the ECU and fuel pump require power from the main relay before they can work. The main relay is constantly powered so checking for power is easy with a test light. It should also make a 'click' sound when the ignition switch is turned. Note: relays look similar but can perform different functions, and electrical parts are non-returnable, so make sure you confirm this is the relay you need.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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Genuine BMW White Green Relay - Multiple BMWs
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Genuine BMW - Corporate Logo
T#:11798
Part#: 61368373700
In Stock
4% off MSRP $ 24.65

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

$ 23.59 USD
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4% off MSRP
$ 24.65

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$ 23.59 USD
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This relay is often the fuel pump relay for many BMW models. To ensure the relay is correct for your car please check the pin locations.
New Alternator - 140amp | BMW E36 E34 M50 M52 S50 S52
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Bavarian Autosport - Corporate Logo
T#:25042544
Part#: 12311744567
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 186.99 USD
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$ 219.99

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$ 186.99 USD
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Genuine BMW Temperature Sensor
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Genuine BMW - Corporate Logo
T#:367843
Part#: 13621433076
In Stock
16% off MSRP $ 66.05

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$ 55.45 USD
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16% off MSRP
$ 66.05

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

$ 55.45 USD
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Motiv ReFlex+ for BMW
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Motiv Motorsports - Corporate Logo
T#:17970629
Part#: RFXF02UI6
In Stock
$ 859.00 USD
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The MOTIV ReFlex+ is an Advanced I/O Integration module allowing a level of precise control of auxiliary components. In addition, the ReFlex can incorporate external data into the factory DME/ECU in parallel through optional CANbus integration. Utilizing the CANbus option, multiple digital and analog signals can be used by the DME/ECU for safety, data logging, or adaptive tuning features. It is unique in its ability to function as a separate standalone, as well as a parallel module in conjunction with the DME/ECU. The ReFlex provides the most accurate and precise supplementary sequential fuel injection with the ability to control other advanced features all in one place. It brings a new level of control, function, and versatility to tuning any modern-day vehicle. Preset crank and cam trigger for most modern-day BMW engines, as well as fully configurable triggers to be synched on any vehicle application. Configurable to operate on 4, 5, 6, and 8-cylinder engines. 3 Point MAP sensor calibration table makes it configurable for almost any MAP or TMAP sensor. Sequential Port Injection with the ability to sense individual injector failures on 4 to 8-cylinder engines. Built-in Ethanol Content Analyzer. The Re|Flex firmware and XDFs include ethanol compensation tables to scale properly for varying ethanol % based on real-time input from the sensor. 2x Additional Outputs. These outputs have 12x12 resolution tables for control in TunerPro R/T. These can be configured to run as on/off, digital, frequency (25hz), or PID. Boost Control WGDC Methanol Solenoid Control PWM (for use with valves such as the Aquamist FAV and the ProMeth Pulse Valve) Nitrous Solenoid Control PWM Auxiliary fuel pump relay trigger 2x Inputs Ethanol Content Sensor Fuel Pressure Sensor (0-10bar) Oil Pressure (0-10bar) Coolant Pressure (0-10bar) EGBP/EMAP (0-10bar) CANbus (not required) enabled communication for the transmission and receiving of digital signals for fully DME/ECU integrated control of external modifications. The CANbus communications also allow for data and errors to be transmitted to and from the vehicle's engine control computer in order to add safeguards and implement engine trips and fail safes. Logging via OBDII is still fully functional and is not affected at all by the communication with the Re|Flex. Some of the developments underway include: Error reporting to and from factory ECU for unparalleled safety Output WGDC by converting an EWG signal to a more conventional DC output for controlling standard 3port and 4port boost solenoids for use with external WG’s The ability to datalog non-factory parameters such as ethanol content, additional pressure sensor, PI IDC, and more! These features make the Re|Flex the most powerful and safest supplementary and auxiliary controller on the market. However, this is only the beginning. As flash platforms find the need for more accessories to control, the Re|Flex was designed to be updated easily by the end user in order to add functionality as it is developed.
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BMW B46 B48 B58 Motiv ReFlex 0-10 Bar Pressure Sensor
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Motiv Motorsports - Corporate Logo
T#:28537533
Part#: 101-0216
In Stock
$ 105.00 USD
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BMW B46 B48 B58 Motiv ReFlex 0-10 Bar Pressure Sensor is designed for accurate measurement of fluid and air pressure in high-performance applications. Ideal for monitoring a variety of pressures including fuel, boost, coolant, and oil, this sensor provides crucial data for optimizing vehicle performance.

Featuring a 2-Pin DTM connector, this sensor offers a direct plug-and-play connection to the ReFlex+ harness, ensuring a seamless integration with flash platforms via CANbus. Each ReFlex+ unit can support up to two of these sensors, allowing for comprehensive monitoring.

  • Versatile Measurement: Capable of measuring fuel pressure, boost, coolant, oil, and other fluids.
  • Easy Integration: 2-Pin DTM connector provides a direct plug-and-play connection.
  • Comprehensive Monitoring: Supports integration of up to two sensors per ReFlex+ unit.
  • High-Performance Design: Designed to handle high pressures and deliver accurate readings.

For optimal installation, consider using the 3/8 Female to 3/8 Male SAE Quick Disconnect Adapter with a 1/8" NPT port on an ethanol sensor or the 5/16 Female to 5/16 Male SAE Quick Disconnect Adapter with a 1/8" NPT port on a factory fuel line. Please note that the ethanol sensor is not included.

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Crankshaft Position Sensor - E36 (OBDI), E34 M50/S50
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Bavarian Autosport - Corporate Logo
T#:579816
Part#: 52380
In Stock
Sale - Save 20% $ 48.99

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$ 39.19 USD
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Common cause of misfires, poor fuel economy, or a crank no start situation. If your M50 or S50 has any of these symptoms, this crankshaft position sensor from Bavarian Autosport is a likely fix.
Camshaft Position Sensor - Priced Each
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Bremmen Parts - Corporate Logo
T#:27105154
Part#: 13627525014
Ships on Jul 6, 2026
Sale - Save 17% $ 41.99

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$ 34.84 USD
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New Alternator - 180 Amp
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Bavarian Autosport - Corporate Logo
T#:26438187
Part#: 12317558220
In Stock
Sale - Save 10% $ 291.99

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$ 262.79 USD
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Fuse Box Cover - E30 E24 E23
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Genuine BMW - Corporate Logo
T#:10454
Part#: 61131368802
In Stock
7% off MSRP $ 87.87

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

$ 81.98 USD
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7% off MSRP
$ 87.87

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

$ 81.98 USD
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This is the Genuine BMW clear plastic fuse box cover for E30 3 series, E24 6 series and E23 7 series. The cover in embossed with fuse and relay locations for ease of use.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1983-1989 E24 BMW 633csi 635csi M6
1983-1987 E23 BMW 733i 735i
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Alternator - 180amp
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Bavarian Autosport - Corporate Logo
T#:26438185
Part#: 12317837981
In Stock
Sale - Save 15% $ 304.99

This product was last offered at the strikethrough price on
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$ 259.24 USD
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$ 304.99

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Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...
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Braille - Corporate Logo
T#:558037
Part#: B14115
Ships in 5 Business Days
$ 204.99 USD
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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind!
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Genuine BMW Engine Set Of Alu. Screws Starter 12410392577
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Genuine BMW - Corporate Logo
T#:14837
Part#: 12410392577
Ships in 4 Business Days
9% off MSRP $ 24.30

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

$ 22.15 USD
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9% off MSRP
$ 24.30

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

$ 22.15 USD
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Turner recommends replacing these bolts when replacing your starter as these bolts are aluminum and torque to yield - making them one time use bolts.

We recommend the Bosch replacement starter to get your vehicle back on the road.

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Genuine BMW Alternator Adjusting Bar - E30 325e 325i, E28 528e ...
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Genuine BMW - Corporate Logo
T#:7124
Part#: 12311274833
In Stock
$ 44.99 USD
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Replace the alternator adjuster on BMW's with the M20 engine with this Genuine BMW part. Over time this part can become corroded or the teeth can become stripped.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.​

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
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New Alternator - 120A
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Bavarian Autosport - Corporate Logo
T#:25042543
Part#: 12317501690
Ships on Aug 4, 2026
Sale - Save 20% $ 211.99

This product was last offered at the strikethrough price on
05-03-2026

$ 169.59 USD
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$ 211.99

This product was last offered at the strikethrough price on
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$ 169.59 USD
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Genuine BMW Oil Pressure Switch - M12x1.5
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Genuine BMW - Corporate Logo
T#:183226
Part#: 12618611273
In Stock
17% off MSRP $ 34.59

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

$ 28.79 USD
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17% off MSRP
$ 34.59

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

$ 28.79 USD
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Genuine BMW Oil Pressure Switch - M12X1,5
This item fits the following BMW Chassis:
E39 M5,E46 M3,E82 1M Coupe,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E63,E65,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F25 X3,F30,F31,i3

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Genuine BMW Ground Wire
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Genuine BMW - Corporate Logo
T#:39433
Part#: 12427549393
In Stock
1% off MSRP $ 60.40

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

$ 59.99 USD
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1% off MSRP
$ 60.40

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

$ 59.99 USD
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Genuine BMW Ground Cable
This item fits the following BMW Chassis:
E82 1M Coupe,E82,E90,E92,E93

Fits BMW Engines including:
M57,N51,N51,N52,N52N,N54,N54T,N55

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Burger Motorsport 4 BAR TMAP Sensor & Adapter - BMW N55/N54/S55 (...
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Burger Motorsports - Corporate Logo
T#:34885402
Part#: 4BAR TMAP
Ships in 3 Business Days
$ 139.99 USD
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Use these plug and play adapters to quickly adapt a 4bar TMAP sensor to your N54/N55/S55 BMW, raising the boost maximum boost range from 20psi factory up to 43psi.

BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness
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Motiv Motorsports - Corporate Logo
T#:22723690
Part#: 101-0212
In Stock
$ 49.00 USD
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$ 49.00 USD
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BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness simplifies the integration of an ethanol content sensor into your BMW's Re|Flex system. This harness is designed to enhance your vehicle's performance by scaling the sequential port injection based on real-time ethanol content, eliminating the need for manual adjustments. Key benefits include:

  • Effortless Installation: Plug-n-play design makes it easy to connect an ethanol content sensor without extensive modifications.
  • Real-Time Adjustments: Allows for automatic scaling of port injection based on real-time ethanol content, optimizing engine performance.
  • Seamless Integration: For CANbus integrated vehicles, it facilitates integration with the factory DME/ECU (pending feature release by tuning platforms).
  • No Manual Flashes Required: Removes the need for ground disconnection or map switching on your port injection controller.

Please note that the ethanol sensor is not included with this harness.

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Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...
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Braille - Corporate Logo
T#:558038
Part#: B2015
Ships in 7 Business Days
$ 237.99 USD
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When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
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Genuine BMW Ground Cable - 12427614083 - F22,F30,F31,F32,F33,F34,F36 ...
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Genuine BMW - Corporate Logo
T#:201976
Part#: 12427614083
In Stock
2% off MSRP $ 60.99

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

$ 59.99 USD
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2% off MSRP
$ 60.99

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

$ 59.99 USD
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In search of Genuine BMW Ground Cable? Look no further! This ground cable is an authentic BMW part, designed to ensure optimal electrical connectivity in your BMW vehicle. Crafted with precision engineering and high-quality materials, it provides reliable performance and durability. Upgrade your BMW's electrical system with this genuine ground cable and enjoy enhanced safety and functionality on the road.

  • Genuine BMW part
  • Ensures optimal electrical connectivity
  • Precision engineering for reliable performance
  • High-quality materials ensure durability
  • Enhances safety and functionality


Genuine BMW Ground Cable -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26,N55

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Bav Auto Camshaft Position Sensor - BMW E36 E39 Z3 M52 S52
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Bavarian Autosport - Corporate Logo
T#:639841
Part#: 12141703221
In Stock
Sale - Save 20% $ 37.99

This product was last offered at the strikethrough price on
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$ 30.39 USD
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Sale - Save 20%
$ 37.99

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$ 30.39 USD
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Faulty camshaft sensors can lead to a number of issues such as hard starts, stalling at low speeds, and check engine (SES) lights. Restore your BMW's smooth operation and reliability by replacing it with a high-quality camshaft sensor from Bav Auto! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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OEM Bosch Voltage Regulator - 180A - E82/88, E9X, E60/61 LCI, E70, E8...
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:558831
Part#: 12317561939
In Stock
$ 61.91 USD
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Ensure the correct voltage is being sent to/from the alternator, keep you electrical system safe from excessive voltage peaks that could cause damage to sensitive electronics and blow out fuses. Bosch's high quality unit will give you peace of mind knowing the electrical system will be safe and the voltage will remain steady. OEM replacement for BMW part # 12317561939

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Genuine BMW Relay - Black
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Genuine BMW - Corporate Logo
T#:14043
Part#: 61366901469
In Stock
3% off MSRP $ 24.65

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

$ 23.81 USD
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3% off MSRP
$ 24.65

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

$ 23.81 USD
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Genuine BMW Relay, Make Contact, Black
This item fits the following BMW Chassis:
E60 M5,E63 M6,E70 X5M,E71 X6M,E82 1M Coupe,E53 48IS,E39,E46,E53 X5,E63,E70 X5,E71 X6,E82,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F25 X3,F26 X4,i3i12

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Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4 ...
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Bremmen Parts - Corporate Logo
T#:640146
Part#: 12141709616
In Stock
Sale - Save 11% $ 39.99

This product was last offered at the strikethrough price on
05-03-2026

$ 35.79 USD
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Sale - Save 11%
$ 39.99

This product was last offered at the strikethrough price on
05-03-2026

$ 35.79 USD
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This is the crank shaft 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 Bremmen sensor to restore peak performance.
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OEM Bosch Voltage Regulator (90amp/120amp) -- E46 E39 E53 Z3 ...
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Bosch - Corporate Logo
T#:373840
Part#: 12317559183
In Stock
$ 37.99

This product was last offered at the strikethrough price on
04-13-2026

$ 37.36 USD
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$ 37.36 USD
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Ensure the correct voltage is being sent to/from the alternator, keep you electrical system safe from excessive voltage peaks that could cause damage to sensitive electronics and blow out fuses. Bosch's high quality unit will give you peace of mind knowing the electrical system will be safe and the voltage will remain steady. OEM replacement for BMW part # 12317559183 and 12317501752.

Cars that have oval or D shaped connector use BMW part # 12317515319

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Vitesco Technologies MAP Sensor - BMW N20 N26 S55 S63
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Vitesco Technologies - Corporate Logo
T#:39059260
Part#: 13627843531
Ships on Sep 16, 2026
$ 99.99

This product was last offered at the strikethrough price on
12-08-2025

$ 93.99 USD
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$ 93.99 USD
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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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FAE Crankshaft Position Sensor
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FAE - Corporate Logo
T#:583140
Part#: 13627525015
In Stock
$ 45.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Plug And Play ReFlex Plus Install Harness - S58/B58
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Precision Raceworks - Corporate Logo
T#:35761669
Part#: 201-0409
Ships on Jun 22, 2026
$ 213.99

This product was last offered at the strikethrough price on
01-22-2026

$ 199.99 USD
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$ 199.99 USD
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The **Precision Raceworks S58/B58 Plug-and-Play Install Harness for the Motiv ReFlex+** is certified by Motiv Motorsports and is an essential upgrade for anyone integrating a ReFlex+ into their S58 or B58 vehicle. This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness - ES#4810312 / ES#4810314 This innovative harness eliminates the need for cutting, crimping, or splicing into your factory wiring, providing a straightforward, fully reversible installation. Simply plug it in, and you're ready to go! ### Why Choose the Precision Raceworks Harness? Although the main harness included with the Motiv ReFlex+ is well-designed, its standard sub-harness requires splicing into the factory wiring. Precision Raceworks addresses this by offering a plug-and-play replacement for the sub-harness. This solution retains the high-quality main harness, avoids unnecessary costs, and simplifies installation for seamless performance. ### Key Features of the Precision Raceworks X58 Harness: - **Motiv Motorsports Certified**, ensuring complete compatibility. - **100% Plug-and-Play** for a quick, hassle-free installation. - **Compatible with Tuning Platforms** such as MHD, MHD+, EcuTek, and BM3. - **Premium Build Quality**, manufactured in an ISO 9001-certified facility using automotive-grade wiring. - **Fast Installation**, completed in as little as one hour. - **Reversible Setup**, preserving the factory harness with no permanent modifications. The Precision Raceworks harness is the ideal choice for ReFlex+ users seeking a reliable, cost-effective, and user-friendly solution without altering their vehicle's original wiring.
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Genuine BMW Engine Ground Cable - E30
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Genuine BMW - Corporate Logo
T#:22419
Part#: 12511714039
Ships in 3 Business Days
$ 47.99 USD
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Genuine BMW Ground Cable - 235mm

This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
M10,M20,S14


FAE Reference Sensor - E23, E24, E28, E30
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FAE - Corporate Logo
T#:583144
Part#: 12141708619
Ships on Jun 26, 2026
$ 46.99 USD
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Referred to as the speed sensor & crankshaft position sensor
Rein Alternator Mounting Screw Set
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Rein - Corporate Logo
T#:14795
Part#: 12310392568
In Stock
$ 36.65

This product was last offered at the strikethrough price on
02-06-2026

$ 20.99 USD
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$ 20.99 USD
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BMW Set Of Alu. Screws Generator -
This item fits the following BMW Chassis:
E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93,F10,F25 X3

Fits BMW Engines including:
N51,N52,N52N

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Hella Crankshaft Position Sensor - E36, E39, E46, E53, E60, E83, Z3, ...
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Hella - Corporate Logo
T#:388896
Part#: 12141709616
In Stock
$ 40.99 USD
Free Shipping on orders $49 and up

Faulty crankshaft position sensors can cause issues with proper ignition timing and adjustment leading to rough idle, stalling, and potential engine damage. A high quality OEM Hella replacement will have your BMW running smoothly for much less than the cost of a Genuine BMW sensor.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

Fits BMW models with the following engines: M52 S52 M54 M56

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BMW E6X / E8X / E9X - N52 Replacement Starter Kit
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Packaged by Turner - Corporate Logo
T#:15777314
Part#: SR0492NKT2-KT
In Stock
Sale - Save 8% $ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 274.28 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 296.99

This product was last offered at the strikethrough price on
03-17-2026

$ 274.28 USD
Free Shipping on orders $49 and up
Is your car having trouble starting? Does your starter click when you turn the key? Sounds like it's time for a new starter motor! Includes new starter with no core charge, intake gaskets, throttle body gasket and hardware.
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Integrated Power Supply Module
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URO - Corporate Logo
T#:37757285
Part#: 12638645514
In Stock at Vendor
$ 188.03

This product was last offered at the strikethrough price on
06-04-2026

$ 187.99 USD
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$ 187.99 USD
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Located on top of the battery
BMW B58 3.0L ReFlex+ Main Injector Harness - Inline-6
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Motiv Motorsports - Corporate Logo
T#:29201081
Part#: 900.1008
In Stock
$ 200.00 USD
Free Shipping on orders $49 and up

BMW B58 3.0L ReFlex+ Main Injector Harness - Inline-6 offers a seamless integration solution for your turbocharged BMW inline-6 engine. Designed to work with the Motive ReFlex Control Unit, this plug-n-play harness ensures a hassle-free installation process for your 6 EV6/USCAR injectors.

  • Direct Plug-N-Play Installation: Connects directly to the ReFlex+ Control Unit and your EV6/USCAR injectors.
  • Versatile Connector Options: Includes DTM 3-Pin and 2-Pin connectors for integration with ethanol content sensors and external sensors.
  • Multiple Sensor Connectors: Features connections for a 0-10 Bar Pressure Sensor and a 0-5v sensor.
  • Auxiliary Output Wires: Provides 3x unterminated wires for additional low-side triggers from the ReFlex+ Control Unit.
  • Easy Connection: DTM 8-Pin connector allows for straightforward setup with ReFlex+ Install Harnesses.

Turner Motorsport's harness ensures efficient and reliable performance, streamlining the process of integrating your ReFlex+ Control Unit with your BMW B58 engine.

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Race German Fuse Replacement Kit
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Race German - Corporate Logo
T#:2602229
Part#: E30FUSEKIT
In Stock
$ 35.99 USD
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Complete set of fuses from OE BMW supplier for direct replacement of blown or mismatched fuses. Kit includes A complete set of new OEM fuses Extra fuses Fuse puller

Genuine BMW Battery Hold Down - 61218353010 - E36,E36 M3
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Genuine BMW - Corporate Logo
T#:21289
Part#: 61218353010
Ships in 3 Business Days
4% off MSRP $ 112.99

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

$ 108.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 112.99

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

$ 108.99 USD
Free Shipping on orders $49 and up


Genuine BMW Battery Hold Down
This item fits the following BMW Chassis:
E36 M3,E36

Genuine BMW Adapter Wiring for Battery IBS System - Multiple BMWs ...
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Genuine BMW - Corporate Logo
T#:39998
Part#: 12517615476
Ships in 3 Business Days
5% off MSRP $ 73.99

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

$ 69.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 73.99

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

$ 69.99 USD
Free Shipping on orders $49 and up
Connects to the IBS system for information relay to the DME via the BSD Interface.

Alternator - 120amp
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Bavarian Autosport - Corporate Logo
T#:25042542
Part#: 12317831436
Ships in 7 Business Days
Sale - Save 20% $ 222.99

This product was last offered at the strikethrough price on
05-03-2026

$ 178.39 USD
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Sale - Save 20%
$ 222.99

This product was last offered at the strikethrough price on
05-03-2026

$ 178.39 USD
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Camshaft Position Sensor - E46 M3, Z4M, Z3M S54
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Bremmen Parts - Corporate Logo
T#:36913379
Part#: 12147539171
Ships on Aug 10, 2026
Sale - Save 20% $ 89.99

This product was last offered at the strikethrough price on
05-03-2026

$ 71.80 USD
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Sale - Save 20%
$ 89.99

This product was last offered at the strikethrough price on
05-03-2026

$ 71.80 USD
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The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

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OEM Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8
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Hella - Corporate Logo
T#:2123
Part#: 12617508003
Back Ordered
$ 82.89 USD
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$ 82.89 USD
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This is the oil level sensor / sender for BMW E46 E39 E60 E38 X3 X5 Z3 Z4 Z8.When this part fails it will illuminate a check light on the dash which indicates it needs to be replaced. Includes o-ring.Manufactured by Hella.

Hella is a premium manufacturer that supplies automotive lighting products for numerous car brands around the world. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW bright and visible for many years to come.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi M3
2008+ E90 BMW 335d
1999-2003 E39 BMW 528i 525i 530i M5
1998-2003 E39 BMW 540i
2004-2005 E60 BMW 525i 530i
1998-2001 E38 BMW 740i 740il 750il
2004-2006 E85 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i X5 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2003-2006 Z4 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8
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Engine Oil Temperature Sensor
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Bremmen Parts - Corporate Logo
T#:36777927
Part#: 13627580635
In Stock
Sale - Save 21% $ 26.99

This product was last offered at the strikethrough price on
05-03-2026

$ 21.21 USD
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Sale - Save 21%
$ 26.99

This product was last offered at the strikethrough price on
05-03-2026

$ 21.21 USD
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Genuine BMW Battery Hold Down - Multiple BMWs
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Genuine BMW - Corporate Logo
T#:186551
Part#: 61217631587
In Stock
$ 25.88 USD
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$ 25.88 USD
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The hold down bracket secures the battery in the battery tray to keep it from sliding around.
Motiv ReFlex Lite: Advanced Sequential Injector Controller - Inline-6...
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Motiv Motorsports - Corporate Logo
T#:29234298
Part#: 910.1011
In Stock
$ 479.00 USD
Free Shipping on orders $49 and up
The ReFlex LITE is a simple yet elegant fueling solution for direct injected vehicles that need to add more fuel by installing a port injection system to keep up with their modifications to the vehicle. Using the same precise form of sequential fuel injection as the ReFlex+, the ReFlex LITE brings a more affordable fuel controller without the additional features of the ReFlex+. Sequential port fuel injection for inline-6 engines Firmware and maps are available for multiple vehicles FREE on our website High resolution calibration tables 24x24 cell RPM vs MAP 0-48psi MAP pressure range 250RPM increments up to 8500RPM High resolution datalogging Fault detection status available to monitor in TunerPRO RT Compact in size Universal fitment Simple installation Please Note: The ReFlex LITE does NOT have the ability to analyze and transmit ethanol content to an ECU.
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Schwaben Automatic Battery Tender
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Schwaben - Corporate Logo
T#:378277
Part#: 005979SCH01A
In Stock
Sale - Save 30% $ 100.99

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

$ 70.69 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 100.99

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

$ 70.69 USD
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This Schwaben Battery Charger is designed to work on 6 or 12 volt Lead-acid batteries only, includes WET, MF,AGM and GEL types. Do not use on dry cell batteries commonly used in appliances. Charger features, Charging voltage auto select. Selectable Charging current,8 LED indicators, No risk of overcharging, overheating protection, Short circuit protection.
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Genuine BMW Ground Strap - E71 E70
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Genuine BMW - Corporate Logo
T#:39442
Part#: 12427557027
Ships in 3 Business Days
3% off MSRP $ 60.99

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

$ 58.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 60.99

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

$ 58.99 USD
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Genuine BMW Ground Cable - Motorraum
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5 X5,E71 X6,F15

Fits BMW Engines including:
M57,N52N,N54,N63,N63N,S63,N62N

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