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BMW Z8 Electrical Sensors, Switches, & Relays

BMW Z8 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.
You're currently viewing parts for your (E52) Z8 2000-2003. Reset your chassis
For accurate results, specify your model below.
Part #: PS-METKIT
Price: $15.99 (USD) 
Quantity:   
Part #: 12147539173
Price: $75.22 (USD) 
Quantity:   
Camshaft / Crankshaft Sensor O-Ring This is the o-ring used for most BMW camshaft sensors and crankshaft sensors. Although most sensors that we sell come with this o-ring at no charge, they may be the source of oil or fluid leaks. Simply replacing the o-ring, rather than replacing the whole sensor, is preferred. Fits with many BMW models and multiple cam, crank, and pulse generator sensors.

Sold per o-ring.
Part #: 12141748398
Price: $1.95 (USD) 
Quantity:   
Genuine BMW Exhaust Camshaft Position Sensor - E46 M3, E39 M5, MZ3, MZ4, Z8 Sensor for: Exhaust. One weak point on BMW engines for years has been the cam position reference sensor. On the S54 engine in the E46 M3, M Roadster, and Z4M, there is one sensor for each cam. The sensor tells the computer the position of the cam on cylinder #1. The computer relies on the sensor's information to set injection timing and VAN0S control. When a sensor goes bad, the computer loses track of what position the cam is in. While the engine will continue to run (taking its measurements from the crank position sensor), the entire system is thrown off. The engine may stumble or run rough, but not misfire, and there will be a loss of performance. Each cam sensor also doubles as a sensor for the VAN0S. So when the sensor goes bad, the VAN0S will revert to a safe mode and will not advance.

While the engine will still run with a faulty cam position sensor, it's not running in its finest tune. The DME will have fault codes related to the cam sensor or for the VAN0S. This is the Original BMW sensor with a new o-ring.

This item fits the following BMWs:
2001-2006 E46 BMW M3
1997-2003 E39 BMW M5
2001-2002 Z3 BMW M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe
2000-2003 E52 BMW Z8 Roadster
Part #: 13627796054
Price: $129.90 (USD) 
Quantity:   
HARD Motorsport Battery Disconnect / Kill Switch Sticker Hard Motorsport Batter disconnect sticker required by many motorsports sanctioning bodies.
Part #: HARD.BATTSTICKER
Price: $3.75 (USD) 
$5.00
Limited Qty Sale
Free Shipping Free Shipping
Quantity:   
OEM Hella Throttle Position Switch - E46 M3, E39 M5, S54 S62

The S54, S62 Throttle valve switch is mounted on the throttle housing and provides a signal to the ECU for the throttle position. If this sensor is faulty it can cause a "check engine" light or driveability problems.S62 V8 engines use 2 sensors. The S54 6 cylinder engine uses 2 sensors. 1 sensor on the throttle actuator and 1 on the throttle body. Restore engine performance and smooth operation with this OEM Hella replacement.

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!

This item fits the following BMWs:
1999-2005 E46 BMW M3
1999-2003 E39 BMW M5
2001-2002 Z3 BMW Z3 M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe

Part #: 13637840383
Price: $79.95 (USD) 
Quantity:   
Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X5 Z4 This Cooling system temperature sensor mounts into the lower radiator hose.

This item fits the following BMWs:
2008+ E82 BMW 128i
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006+ E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi
2007+ E92 BMW 328i 328xi 328i xDrive
2007+ E93 BMW 328i
1999-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
2004+ E63 BMW 645ci 650i M6
1999-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i X5M
2007-2014 E71 BMW X6 xDrive50i X6M
2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
Part #: 13621433077
Price: $19.95 (USD) 
Quantity:   
Oil Temperature Sensor And Gauge Kit

The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well. 

Kit Includes:

  • Digital Oil Temperature Guage (100-300 degrees) 
  • Turner oil sensor flange
  • Instructions
  • Mounting hardware
  • Decals
  • Temperature sender - 1" long with 1/8" NPT threads
  • Dual color display (Blue or Red)

**Includes Turner oil level sensor flange!**

Part #: oiltempgaugeBRKT
Price: $155.94 (USD) 
Quantity:   
Turner Motorsport Oil Temperature Sensor Flange

The Turner Motorsport Oil Temperature Sensor Flange was designed to get your oil temperature from the best possible location: the sump. Most of the factory and aftermarket sensors are located after the oil pump, which does not give you an accurate temp reading of the oil that is actually lubricating the engine. At the factory temp sensor location the sensor picks up heat not only from the oil stream, but also from the oil pump and housing which will skew the reading. Other aftermarket adapters can be give inaccurate readings from their location and/or design limitations. And may require making unnecessary modifications. By relocating the sensor to the oil sump it reduces clutter and sits flush against the bottom of the oil pan to avoid potential clearance issues. Testing that we have done on and off the track shows that the sump location is the most accurate. We accomplish this by removing the factory oil level sensor or block off plate and using the existing hole and bolt pattern on the oil pan with no additional modifications. Any sensor with an M12 x 1.50mm thread can be used in the flange. 

Note that removing the factory oil level sensor will trigger the low oil fault/warning light. There's no elegant way around this but since the Temp Flange is considered a race-only part we assume you will be checking your own oil level anyway or be using a stand-alone dash/engine management system that does not track oil level. And having the most accurate oil temp is more important.

Applications:
1987-1991 E30 M3
1992-1999 3 Series E36 M3 3.0 and M3 3.2 Euro Models Only!
1999-2006 3 Series E46 All
1991-1995 5 Series E34 525i M50
1997-2003 5 Series E39 525i, 528i, 530i, 540i, 540iP, M5
2004-xxxx 5 Series E60 525i, 530i
1995-2001 7 Series E38 
Z3 2.5, 2.5i, 2.8, 3.0i, M3.2 S54
Z4 2.5, 3.0
Z8 All

Part #: TEN9990001
Price: $79.95 (USD) 
Quantity:   
OEM Bosch BMW Knock Sensor -- M62 S62 N62

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!

Part #: 13627568421
Price: $73.95 (USD) 
Quantity:   
Coolant Temperature Sensor - M52/S52, M62, M73, M54, S62 This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

This coolant temp sensor fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
1999-2003 E39 BMW 540i, located on side of water pump
1999-2001 E38 BMW 740i 740il, located on side of water pump
1995-1996 E38 BMW 750il, located on side of water pump
1990-1999 E31 BMW 850i 850ci, located on side of water pump
2000-2006 E53 BMW X5 3.0i, located in cylinder head
2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head
Part #: 13621703993
Price: $36.95 (USD) 
Quantity:   
OEM Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8 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.

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
Part #: 12617508003
Price: $64.95 (USD) 
Quantity:   
Oil Pressure Switch (fits most BMWs) Having your oil pressure light come on can mean very serious problems. Or it could just be this switch that fails several times over a car's lifespan. By no means should you ignore the warning light but replacing this sensor could be the actual culprit. The other problem with this switch is that oil can leak past its seal. With the oil under a lot of pressure at this point, the oil loss can be a serious concern. It's a simple replacement when doing most oil change work.

This Oil Pressure Switch fits the following BMWs:
1985-1991 E30 318i, 318is, 325e, 325i, M3
1992-1999 E36 318i/is, 325i/is, 328i/is, 323is, M3
1992-1997 E31 840i, 850i
1988-1994 E32 735i, 735iL, 740i, 740iL
1989-1995 E34 525i, 530i, 535i, 540i, M5
1995-2001 E38 740i, 740iL, 750i, 750iL
1996-2002 Z3 Roadster/Coupe 1.9, 2.3, 2.5, 2.8, 3.0, 3.2
1997-2003 E39 525i, 528i, 530i, 540i, M5
1999-2005 E46 323, 325, 328, 330, M3
2000-2003 Z8 roadster
2001-2006 E53 X5 X5 3.0i, X5 4.4i, X5 4.6is, X5 4.8is
2002+ E65/E66 745i, 745li, 750i, 750li, 760i, B7 Alpina
2003+ Z4 Roadster/Coupe Z4 2.5, 3.0, 3.0si
2004+ E60 525i, 530i, 535i, 545i, 550i, M5
2005+ E63/E64 645Ci, 650i, M6
2005+ E83 X3 X3 2.5, X3 3.0
2006+ E90/E92 325, 328, 330, 335
2007+ E70 X5 X5 3.0i, X5 4.8i
Part #: 12617568480
Price: $10.95 (USD) 
Quantity:   
OMP Battery Cut Off Switch / Kill Switch OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
Part #: EA-462
Price: $69.95 (USD) 
Quantity:   
Turner Plug-and-Play IAT Relocation Kit

If you've ever noticed your car feeling a bit sluggish after a few laps around the track, some hard driving, or even sitting in traffic on a hot day you may have been a victim of power loss due to heat soak.  All vehicles will lose some degree of performance due to heat soak under the right operating conditions.  The engine management system is constantly monitoring operating conditions and modifying parameters based on sensor inputs.  The problem is that BMW integrated the intake air temp sensor in the MAF housing, and often the MAF is sandwiched behind a hot radiator and in some applications next to an even hotter valve cover.  This is fine for overall simplicity and cost of the original engine management system, but less than ideal for optimal performance.  The MAF housing absorbs the excess heat from its surroundings and can’t shed it fast enough, and the ECU reads a falsely high intake air temperature.  It then incorrectly adjusts operating parameters to compensate for the false hot air measurement (pulling timing and running a leaner fuel mixture), and torque output drops like a rock.

The fix?  Locate an intake air temp sensor in a location where it can more accurately measure incoming air temps and where it is less prone to heat soak.  By mounting a sensor further away from the heat source and divorcing it from the mass of the MAF housing, it can both resist the effects of heat soak longer and respond to temperature changes more quickly.  The end result?  You’ll experience reduced loss in torque and more consistent power output when you’re pushing your engine hard. 

The Turner engineering team was initially skeptical of the claimed performance benefits of this modification.  We set out to first validate the functionality and performance benefit of a temp sensor relocation. We set out to replicate stop-and-go traffic heat soak in a 2001 540i in a controlled environment - our dynamometer. Four runs were performed with the dyno's cooling fans turned off to simulate heat soak like being stuck in traffic or low speeds, then the fans were turned on for three more runs to observe the recovery rate once air flow was reintroduced. This was done in stock configuration and then repeated with our sensor relocation kit. 

Result? We recovered 11lb-ft torque at 2500rpm by relocating the temperature sensor! This is a difference that can be felt behind the wheel - owners of M5s can expect an even larger recovery. Here are the heat soak-related torque losses we experienced: 

Stock IAT location Torque loss:
18rwtq at 2500rpm
10rwtq at 3000rpm
9rwtq at 3700rpm

Turner IAT Relocation Torque loss:
7rwtq at 2500rpm
5rwtq at 3000rpm
5rwtq at 3700rpm

Other “kits” on the market require you to cut and splice into your factory wiring harness. The Turner engineering team designed a complete plug and play kit that makes for quick, easy, and reversible installation. Original equipment weather-sealed connectors offer long term reliability, while sheathed wiring offers a clean appearance - you'll quickly forget it's under the hood. We found that different applications called for slightly different sensor positioning and cable routing, so our harness is nearly 3 feet long - long enough to provide flexibility in positioning, but not too long that you're left with unsightly excess wiring. We recommend positioning the sensor in a location away from engine heat, but still within the intake ducting (we found the far side of the airbox base to be a good home). Installation is as simple as drilling a small hole for the sensor and plugging in the harness.

We include everything you need to relocate your IAT - just select your desired sensor brand below (we recommend Beru).

Also the perfect plug-n-play option for anyone looking to upgrade their intake to utilize an Alpha-N tune!

Turner IAT Relocation Kit fits the following BMWs: 
1999-2001 E38 BMW 740i 740il
1999-2003 E39 BMW 540i M5* 
2006-2010 E6X BMW M5 M6*
2000-2003 E53 BMW X5 4.4i 4.6is
2001-2006 E46 BMW M3
2001-2002 MZ3 BMW M Coupe M Roadster
2006-2008 MZ4 BMW M Coupe M Roadster

*Despite the M5 having two MAF, temperature is only detected on the passenger side MAF, and therefore only one relocation is required.

Part #: 014579TMS
Price: $99.95 (USD) 
OEM Hella Crankshaft Position Sensor - in Bell Housing - E9X M3 E39 540i M5 E60 M5 E63 M6 E38 740i

This crank shaft position sensor provides the ECU with the engine speed signal. OEM Hella sensors are a perfect replacement for faulty position sensors causing poor engine operation. It is mounted in the bell housing at about the 7 o'clock postion of the transmission on most cars. This sensor fits BMW E90 E92 E93 M3, E39 540i M5, E60 M5, E63 M6, E38 740i 740il 750il 1997-2001, E31 840ci 850ci, E52 Z8.

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!

This item fits the following BMWs:
2008+ E9X BMW M3
1997-2003 E39 BMW 540i M5
2006-2010 E60 BMW M5
2006+ E63 BMW M6
1997-2001 E38 BMW 740i 740il 750il
1997-1998 E31 BMW 840ci 850ci
2000-2003 E52 BMW Z8

Part #: 13627839138
Price: $77.95 (USD) 
Quantity:   
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