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Bosch - Corporate Logo
T#:19326
Part#: 12311726022
In Stock at Vendor
$ 71.99

This product was last offered at the strikethrough price on
10-13-2026

$ 64.99 USD
Free Shipping on orders $49 and up
$ 64.99 USD
Free Shipping on orders $49 and up
This is the voltage regulator found on the back of the alternator. It's a normal wear item and the contacts are the first thing to check if you believe the alternator is not charging the battery (lights flickering or dim, battery light on in the dash, the engine quits without warning, or other electrical failures). The voltage regulator manages the voltage flowing through the car, especially to and from the battery. There are two carbon contacts on the regulator that control the magnetic field when the alternator is spinning and these contacts wear over time. A new set of contacts will be about 13mm in length. Anything less than 5mm and the voltage regulator should be replaced, regardless if that is the cause of your electrical problems or not. Most older mechanics will tell you to keep a spare regulator in your toolbox.

The carbon contacts can be replaced on their own but requires desoldering the old ones from the base and then soldering the new ones on. It may be easier to just replace the unit as a whole.

This is the OEM voltage regulator, made by Bosch or Hella. It's the one with the white base and fits most Bosch alternators from 1977-1995 (Valeo and other alternators look very different and have a black cover and base). This part number replaces the previous BMW part numbers - 12311271664, 12321279548, 12311722755, 12321711399 and Bosch part numbers 1197311021 and 1197311028.
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URO - Corporate Logo
T#:43446144
Part#: 12147539166
In Stock
$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
Free Shipping on orders $49 and up
When this sensor fails, it will become impossible to start your car, leaving you stranded. Get your BMW back up and running with this brand sensor from URO.
ATD Tools - Corporate Logo
T#:383674
Part#: ATD382
In Stock
$ 31.99 USD
Free Shipping on orders $49 and up
You never know when you will blow a fuse so it always good to have extra

Genuine BMW - Corporate Logo
T#:25048
Part#: 11127559699
In Stock
17% off MSRP $ 31.69

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

$ 26.15 USD
Free Shipping on orders $49 and up
17% off MSRP
$ 31.69

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

$ 26.15 USD
Free Shipping on orders $49 and up
This seal plug is installed in the valve cover of N52 engines and is supposed to prevent oil from leaking out. But the rubber plug loosens or becomes dislodged over time and oil does seep out of the valve cover and eventually into the sensor itself (destroying a very expensive sensor). In extreme neglect oil will contaminate the engine wiring harness or even the DME itself. During any valve cover work we recommend checking for oil inside the sensor or around this plug and replace the plug during any valve cover gasket work. It's cheap insurance against an expensive contaminated eccentric shaft sensor.
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:
2008+ E82 BMW 128i
2007-2011 E90 BMW 328i 328xi 328i xDrive - Sedan
2007-2012 E91 BMW 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
2007-2010 E60 BMW 528i 528xi 528i xDrive
2011 F10 BMW 528i 528i xDrive
2007-2010 E83 BMW X3 3.0i X3 3.0si
2007-2013 E70 BMW X5 3.0si
2007-2008 E85 BMW Z4 3.0i Z4 3.0si
2009-2010 Z4 BMW Z4 sDrive30i
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Hella - Corporate Logo
T#:594791
Part#: 12141726548
Ships in 1 Business Day
$ 83.81

This product was last offered at the strikethrough price on
07-26-2026

$ 82.04 USD
Free Shipping
$ 82.04 USD
Free Shipping
Alternator Air Duct - E36 323i 325i 328i M3
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:2099
Part#: 12311735915
Back Ordered
$ 30.99

This product was last offered at the strikethrough price on
06-22-2026

$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
This is the alternator air duct that goes from the inlet scoop to the alternator.. It fits BMW E36 323is 323ic 325i 325is 325ic 328i 328ic 328is M3 1992-1998.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328ic 328is M3
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Bosch - Corporate Logo
T#:375327
Part#: 61131372626
In Stock at Vendor
$ 2.03 USD
Free Shipping on orders $49 and up
Bosch - Corporate Logo
T#:13073
Part#: 12141702163
In Stock
$ 76.99

This product was last offered at the strikethrough price on
08-03-2026

$ 59.99 USD
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$ 59.99 USD
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Bosch BMW PING SENSOR:121060

Brake Switch - 4 Prong
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373217
Part#: 61318360417
Back Ordered
$ 15.52 USD
Free Shipping on orders $49 and up
$ 15.52 USD
Free Shipping on orders $49 and up
Located on the brake pedal, this switch is vital to your brake light function. In the event that your vehicle's brake lights are not working and simultaneously showing a "brake light circuit failure", you should replace this part.
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Permatex - Corporate Logo
T#:3672391
Part#: 22058
Ships in 1 Business Day
$ 20.99 USD
Free Shipping on orders $49 and up
Protects electrical connections and wiring from salt, dirt and corrosion
Hella - Corporate Logo
T#:7175
Part#: 12631708646
Back Ordered
$ 20.99

This product was last offered at the strikethrough price on
08-03-2026

$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
Free Shipping on orders $49 and up
This part has been superseded to BMW Part 12631708647
Parking Aid Sensor
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37858371
Part#: 66206989068
Ships in 1 Business Day
$ 31.99

This product was last offered at the strikethrough price on
10-01-2026

$ 26.99 USD
Free Shipping on orders $49 and up
$ 26.99 USD
Free Shipping on orders $49 and up
This replacement PDC sensor is positioned behind the front and rear bumpers and serves as a direct replacement for any broken, missing, or faulty sensor.


Braille Performance Intensity Carbon Lithium-ION Battery - i48CX - 10...
This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shi
Braille - Corporate Logo
T#:558047
Part#: I48CX
Ships in 5 Business Days
$ 1,164.99 USD
Free Shipping on orders $49 and up
The ultra-lightweight, standard height I48CX lithium-ION battery from Braille Battery is a popular choice among BMW enthusiasts looking for a drop-in replacement battery that shaves off a ton of weight, 35 pounds in total! Thanks to the Group 48 design of this battery, no modifications are needed for installation. This is perfect for anyone looking to drive their car both on and off of the track, without any negative side effects, and wants a battery with a 10-15 year life span!
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URO - Corporate Logo
T#:52621857
Part#: 12141709616
In Stock
New Item
$ 25.99 USD
Free Shipping on orders $49 and up
The URO Parts 020655 Crankshaft Position Sensor offers a cost-effective alternative to expensive OE components without sacrificing quality or longevity.
Performance Tool - Corporate Logo
T#:1809154
Part#: W5368
Ships in 1 Business Day
$ 13.68 USD
Free Shipping on orders $49 and up
A must for any toolbox.

Voltage Regulator
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:594108
Part#: 12317603775
Ships in 1 Business Day
$ 71.56

This product was last offered at the strikethrough price on
10-27-2026

$ 63.33 USD
Free Shipping on orders $49 and up
$ 63.33 USD
Free Shipping on orders $49 and up
Have you noticed inconsistent electrical power in your interior lately? Your voltage regulator is responsible for maintaining a constant voltage out from the alternator.

Santech - Corporate Logo
T#:641428
Part#: 64531386971
Ships in 1 Business Day
$ 41.97

This product was last offered at the strikethrough price on
07-03-2026

$ 38.29 USD
Free Shipping on orders $49 and up
$ 38.29 USD
Free Shipping on orders $49 and up
Is your air conditioning system faulting by turning on and off at random, leaving you sweating in the hot summer days? The pressure switch shuts off the A/C compressor if the refrigerant pressure is too low or too high to protect your A/C system components from damage. If the switch is faulty, the A/C compressor will shut off at random intervals, or not turn on at all, without cooling the interior cabin. If this is the case with your A/C system, replace your pressure switch to restore cool air.
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Oil Pressure Switch
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373034
Part#: 61311351799
Ships in 1 Business Day
$ 2.99 USD
Free Shipping on orders $49 and up
Make sure your vehicle is reading its oil pressure correctly with a new oil pressure switch.

URO Parts Air Temperature Sensor - 13621725324
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:25739332
Part#: 13621725324
Ships in 1 Business Day
$ 13.99 USD
Free Shipping on orders $49 and up

Found on the intake air box or throttle body boot, this sensor relays intake air temperature information to the DME. Commonly referred to as the IAT sensor, this component will cause erratic idle, loss of power and a check engine light upon failure. Prevent these issues with this high-quality replacement from URO parts.

URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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Wehrle - Corporate Logo
T#:31522987
Part#: 61311371909
Ships in 1 Business Day
$ 20.37

This product was last offered at the strikethrough price on
07-15-2026

$ 18.46 USD
Free Shipping on orders $49 and up
$ 18.46 USD
Free Shipping on orders $49 and up

Race German - Corporate Logo
T#:6827884
Part#: C101-HOLDER
Ships in 8 Business Days
$ 44.99 USD
Free Shipping on orders $49 and up
Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. BMW's original C101 bracket which connects to the firewall and holds the diagnosis port unfortunately over time becomes heat soaked and brittle. The OEM bracket, which is no longer available, also features a flawed hinge design that easily wears and breaks. Race German has devised a solution to this issue and developed a new bracket! This heavy duty C101 firewall bracket is completely plug and play. These brackets are CAD designed and feature a two piece design with stainless steel hardware.
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E46 M3, MZ3 S54 OEM Valeo Alternator (New)
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:377735
Part#: 12317831436
In Stock at Vendor
$ 522.00

This product was last offered at the strikethrough price on
07-16-2026

$ 473.99 USD
Free Shipping
$ 473.99 USD
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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies.

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URO Camshaft Position Sensor - BMW E36 Z3 M42 M44
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:591864
Part#: 12141743072
In Stock
$ 36.99

This product was last offered at the strikethrough price on
10-22-2026

$ 31.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 36.99

This product was last offered at the strikethrough price on
10-22-2026

$ 31.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

URO Camshaft Position Sensor - BMW E36 Z3 M42 M44

The URO Camshaft Position Sensor - BMW E36 Z3 M42 M44 is an essential component for precise engine timing and efficient performance. Also known as the pulse generator, this sensor mounts to the side of the cylinder head and detects the camshaft’s position to optimize fuel injection and ignition timing. A failing sensor can trigger engine fault codes, cause rough idling, misfires, or poor fuel economy. Replacing a faulty camshaft position sensor restores accurate timing, ensuring smooth operation and peak efficiency for your BMW E36, Z3, M42, or M44 engine.

  • Direct replacement for BMW E36, Z3, M42, and M44 engines
  • Detects camshaft position for precise engine timing
  • Helps optimize fuel injection and ignition performance
  • Eliminates rough idling, misfires, and poor fuel economy
  • Designed for durability and long-lasting performance
  • Restores smooth operation and prevents engine fault codes
  • OE-style fitment for easy installation
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Facet - Corporate Logo
T#:554187
Part#: 12141720856
Ships in 1 Business Day
$ 45.99 USD
Free Shipping on orders $49 and up
$ 45.99 USD
Free Shipping on orders $49 and up
Having a crank but no starting issue? This sensor is often the culprit


Bosch - Corporate Logo
T#:7266
Part#: 13627568421
Ships in 1 Business Day
$ 127.99

This product was last offered at the strikethrough price on
08-13-2026

$ 106.99 USD
Free Shipping
$ 106.99 USD
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Knock sensors detect pings in the engine and adjust ignition timing to restore perfect operation. Faulty knock sensors will throw engine codes or even lead to engine damage. Replace your sensor with a reliable, high quality Bosch sensor to ensure proper engine ignition timing.

Bosch # 13627568421 OEM replacement for BMW part # 13627568421, 12141709317, and 12141435502.

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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Valeo New Alternator - 80 Amp - E34, E36
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:377737
Part#: 12311744564
Ships in 1 Business Day
$ 533.99 USD
Free Shipping
$ 533.99 USD
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Brand new unit with no core charge
Bosch - Corporate Logo
T#:579188
Part#: 261231074
Ships in 1 Business Day
$ 108.00 USD
Free Shipping
$ 108.00 USD
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Controls the timing and air/fuel mixture of your engine

Braille - Corporate Logo
T#:558046
Part#: G30
Ships in 6 Business Days
$ 522.99 USD
Free Shipping on orders $49 and up
The G30 lithium battery from Braille is designed for the Import Tuner market (4 and 6 cylinder) for track use and has enough power for small black V8 race cars and hot rods with light electrical demands/accessories and standard compression. The G30 comes in the popular ETX 30 Group size, just like the B3121 AGM, so it is small and light enough to mount in a variety of locations. Incorporated in this battery is the same technology used in their race winning batteries used by nearly every OEM developer in classes ranging from SCCA to Formula 1.
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Braille - Corporate Logo
T#:36947237
Part#: B48-H6-L3
Ships in 4 Business Days
$ 398.99 USD
$ 398.99 USD
Crankshaft Position Sensor
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37858379
Part#: 13627839138
In Stock
$ 22.43 USD
Free Shipping on orders $49 and up
The flywheel sensor monitors the rotational speed of the flywheel and transmits this data to the ECU/DME, which uses it to optimize engine performance. A faulty flywheel sensor can lead to rough running or prevent the engine from starting altogether.
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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
Ships in 1 Business Day
$ 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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Alternator Bracket Bushing - Priced Each
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:592985
Part#: 12311715491
Ships in 1 Business Day
$ 2.99 USD
Free Shipping on orders $49 and up
Rubber bushing, placed in the top portion of the alternator support bracket. Each vehicle requires two.

Valeo Voltage Regulator - Valeo - E53, E60, E63, E64, E70
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:1196078
Part#: 12318510090
Ships in 1 Business Day
$ 92.82

This product was last offered at the strikethrough price on
10-27-2026

$ 82.14 USD
Free Shipping on orders $49 and up
$ 82.14 USD
Free Shipping on orders $49 and up
OEM replacement for you BMW alternator fixing charging issues

Camshaft Position Sensor
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:384156
Part#: 12141742185
Ships in 1 Business Day
$ 36.99 USD
Free Shipping on orders $49 and up
When this sensor fails, it will become impossible to start your car, leaving you stranded.
Bosch - Corporate Logo
T#:375962
Part#: 12311407440KT
In Stock
$ 789.99

This product was last offered at the strikethrough price on
08-19-2026

$ 729.99 USD
Free Shipping
$ 729.99 USD
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If your car has died on the side of the road from a dead battery and you notice flickering or low powered head lights, it's likely your alternator failing. To be sure you are getting a high quality part with a long life-span, choose this OEM Bosch Alternator. This is an OEM replacement for BMW part # 12311407440.

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!

A refundable $70.00 core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge.

This item fits the following BMWs: 
1999-2003 E39 BMW M5 
 

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Hamburg Tech - Corporate Logo
T#:46684761
Part#: 12121722570
Ships in 1 Business Day
$ 114.99 USD
Free Shipping on orders $49 and up


Advanced Auto Fabrication - Corporate Logo
T#:7608844
Part#: 11648
In Stock at Vendor
$ 28.99 USD
Free Shipping on orders $49 and up
Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. The AAF E46 Jump Post Relocation Bracket makes it easy to adjust camber/caster on your race car by getting the factory jump post out of the way! In race car applications, the desired camber and caster settings can cause the strut tops and shock adjusters to interfere with the factory jump post. This kit takes just a few minutes to install and makes using strut braces and adjusting camber plates just that much safer and faster.
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Genuine BMW - Corporate Logo
T#:367792
Part#: 12141743072
Ships in 1-2 days
6% off MSRP $ 343.99

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

$ 323.99 USD
Free Shipping
6% off MSRP
$ 343.99

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

$ 323.99 USD
Free Shipping
Motiv Motorsports - Corporate Logo
T#:29101668
Part#: 910.1001
Ships in 4 Business Days
$ 849.00 USD
Free Shipping on orders $49 and up
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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Continental Knock Sensor - N52
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:580193
Part#: A2C59517063
Ships in 1 Business Day
$ 154.54

This product was last offered at the strikethrough price on
10-27-2026

$ 137.21 USD
Free Shipping
$ 137.21 USD
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Genuine BMW Ping Sensor -
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 - Corporate Logo
T#:591862
Part#: 12141720852
Ships in 1 Business Day
$ 114.99

This product was last offered at the strikethrough price on
08-03-2026

$ 112.99 USD
Free Shipping
$ 112.99 USD
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Having a crank but no starting issue? This sensor is often the culprit
Burger Motorsports - Corporate Logo
T#:599636
Part#: TYPEA4BARADAPTER
Ships in 2 Business Days
$ 35.00 USD
Free Shipping on orders $49 and up
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. For very high boost applications, this 4 BAR adapter can be used which requires Bosch 4 BAR sensor (Part # 281002576). SENSOR NOT INCLUDED, Please see T#587716
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Bremi - Corporate Logo
T#:2027109
Part#: 13627639278
Ships in 1 Business Day
$ 44.99

This product was last offered at the strikethrough price on
07-27-2026

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
Bosch - Corporate Logo
T#:373543
Part#: 12317501599
Ships in 1 Business Day
$ 511.99 USD
Free Shipping
$ 511.99 USD
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If you car has died on the side of the road from a dead battery and you notice flickering or low powered head lights, it's likely your alternator failing. To be sure you are getting a high quality part with a long life-span, choose this OEM Bosch Alternator. This is an OEM replacement for BMW part # 12317501599.

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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Advanced Auto Fabrication - Corporate Logo
T#:7593105
Part#: 116177
Ships in 3 Business Days
$ 71.99 USD
Free Shipping on orders $49 and up
Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. AAF's Oil Pressure Sensor Relocation Kit allows for an aftermarket low pressure switch as well as oil pressure sensor, or two 1/8' NPT pressure sensors to be installed. This can allow a gauge or light to be on the dash and still log oil pressure in a data logger. This kit also moves the oil pressure sensor away from the engine and onto the chassis (or any other spot) where is it much easier to access, or install larger size diameter sensors. Fits all M20 Engines. Features: 4AN Stainless Steel Braided Line Banjo Bolt and Fitting (installs onto block) 3 Way 1/8' NPT Tee Fitting, for hose from block and 2 sensors. Note: This kit does not come with sensors – the factory low pressure switch can NOT be used. An aftermarket 1/8″ NPT low pressure switch can be used with the factory wire.
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OEM VDO Mass Air Sensor -- N52 BMW
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Continental - Corporate Logo
T#:14962
Part#: 13627551638
Ships in 1 Business Day
$ 269.63

This product was last offered at the strikethrough price on
10-27-2026

$ 239.75 USD
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$ 239.75 USD
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This is a high quality replacement OEM VDO Mass Air Sensor.The MAF controls the amount of fuel that goes through the injectors based on the volume of air coming through the intake. If your vehicle is giving you a MAF 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 completely, the vehicle will stutter and stall as it falls into a limp mode. One way to check if your MAF is bad is to unplug the connector before starting your car. If it idles well (compared to a previous poor idle), your MAF needs 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.

OEM replacement for BMW part # 13627551638.

OEM VDO is one of the largest OE providers in the world, supplying numerous vehicle brands, including BMW, with many of their genuine parts that build the vehicle before they ever reach the car lot. Entrusted by many of the top names in automotives and with their proven history of reliability, it makes all of us here at Turner confident that their line of OEM replacement parts are a perfect option to restore your vehicles original operation and performance. The same great quality or higher than Genuine BMW parts at a lower cost.

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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Victor Reinz - Corporate Logo
T#:13233505
Part#: 12141402705
Ships in 1 Business Day
$ 1.49

This product was last offered at the strikethrough price on
08-26-2026

$ 1.28 USD
Free Shipping on orders $49 and up
$ 1.28 USD
Free Shipping on orders $49 and up
This O-Ring can sometimes leak at the bottom of your engine and need to be replaced. Fits around the head of the lower crankshaft sensor and provides a connection point.
OEM Valeo Alternator - 185 amp
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Valeo - Corporate Logo
T#:376244
Part#: 12317525376
Ships in 1 Business Day
$ 730.23

This product was last offered at the strikethrough price on
07-16-2026

$ 685.05 USD
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$ 685.05 USD
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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!

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Bremi - Corporate Logo
T#:27871806
Part#: 13627806782
Ships in 1 Business Day
$ 69.99

This product was last offered at the strikethrough price on
07-15-2026

$ 63.99 USD
Free Shipping on orders $49 and up
$ 63.99 USD
Free Shipping on orders $49 and up
The crankshaft position sensor tells the computer whether the timing is correct in the engine. Symptoms such as no start or extended cranking times can be a telltale sign that you need to replace your crankshaft positioning sensor that is either faulty or damaged.
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Hitachi - Corporate Logo
T#:48850072
Part#: 12147539165
In Stock
$ 41.99 USD
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$ 41.99 USD
Free Shipping on orders $49 and up
A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivabilty issues. Uses O-ring # 12 141 748 398 (not included)
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