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BMW Engine Parts

Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.

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Eldor - Corporate Logo
T#:641259
Part#: 12138657273
In Stock
$ 34.99 USD
Free Shipping on orders $49 and up
Used in a wide variety of BMW engines to ensure proper spark plug operation.
Eldor - Corporate Logo
T#:29234309
Part#: 12138616153
In Stock
$ 43.99 USD
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$ 43.99 USD
Free Shipping on orders $49 and up

Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.

This is the current replacement for some BMW 6 and 8-cylinder engines built in the late 2000s and after. BMW has made numerous changes to ignition coil part numbers in recent years but has approved this part number to work in the vehicles listed below. It's listed as a replacement coil for N20, N55, and S55 engines. In March 2015 BMW approved it for N51/N52 engines. This part number replaces the previous BMW part number 12137594937 for the cars listed below.

Sold per coil. Includes boot and connector.

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Eldor - Corporate Logo
T#:590050
Part#: 12138643360
In Stock
$ 41.99

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

$ 36.76 USD
Free Shipping on orders $49 and up
$ 36.76 USD
Free Shipping on orders $49 and up

Revitalize your BMW's performance with Eldor ignition coils. Sluggish acceleration, misfires, and rusty terminals may indicate a worn coil. Located on the engine's top, these coils require inspection and replacement every 60,000 miles or as needed. Ensure your ignition system is in optimal condition for peak performance.

  • Revitalize sluggish acceleration
  • Address misfires and rusty terminals
  • Inspection and replacement every 60,000 miles
  • Harmonize ignition system components
  • Unlock hidden horsepower
  • Improve fuel economy
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OEM Valeo Alternator - 180amp - E9X M3 S65
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Valeo - Corporate Logo
T#:377508
Part#: 12317837981
In Stock
$ 630.99

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

$ 404.99 USD
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$ 404.99 USD
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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!

OEM Starter Motor - E46 M3 2001-2006
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Valeo - Corporate Logo
T#:2988
Part#: 12417835735
In Stock
$ 400.99

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

$ 293.99 USD
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$ 293.99 USD
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This is the starter motor for BMW E46 M3 2001-2006 is an OEM Valeo unit.

This item fits the following BMWs:
2001-2006 E46 BMW M3. M3 Convertible
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2005-2008 E85 BMW Z4 M Roadster Z4 M Coupe
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Eldor - Corporate Logo
T#:30927351
Part#: 12138692611
In Stock
$ 61.08 USD
Free Shipping on orders $49 and up
$ 61.08 USD
Free Shipping on orders $49 and up
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares. When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand and many other high-quality OEM brands with pride and has the parts you need to complete your next project with confidence. Sold per coil. Includes boot and connector.
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Beru - Corporate Logo
T#:584875
Part#: 12218591724
In Stock
$ 126.99 USD
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$ 126.99 USD
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Sends power to the glow plugs to preheat them for ignition.
Valeo Voltage Regulator - Valeo - E53, E60, E63, E64, E70
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Valeo - Corporate Logo
T#:1196078
Part#: 12318510090
Ships in 2 Business Days
$ 91.37 USD
Free Shipping on orders $49 and up
$ 91.37 USD
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OEM replacement for you BMW alternator fixing charging issues

E46 M3, MZ3 S54 OEM Valeo Alternator (New)
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Valeo - Corporate Logo
T#:377735
Part#: 12317831436
In Stock
$ 522.00

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

$ 462.99 USD
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$ 462.99 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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Karlyn - Corporate Logo
T#:381414
Part#: 12121311735
Ships in 7 Business Days
$ 249.99 USD
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$ 249.99 USD
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Complete set of plug wires
OEM Valeo Alternator - E60 M5, E63/64 M6
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Valeo - Corporate Logo
T#:14835
Part#: 12317836592
Ships in 9 Business Days
$ 358.99 USD
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$ 358.99 USD
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This is a Valeo brand new 170 amp alternator. These alternators are built especially for extremes of heat, cold and high demand. Your BMW deserves nothing less than the best, which is why an OEM alternator is the best option. BMW alternators are built to last using the highest quality materials and the most technologically advanced processes. All alternator parts are 100% factory tested to assure that they meet or exceed original equipment specifications. And every alternator is fully load tested to guarantee compliance with BMW's strict performance specifications.

No core charge!

This item fits the following BMWs:
2006-2010 E60 BMW M5
2006-2010 E63 BMW M6

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Voltage Regulator
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Valeo - Corporate Logo
T#:594108
Part#: 12317603775
In Stock
$ 71.22

This product was last offered at the strikethrough price on
05-04-2026

$ 70.45 USD
Free Shipping on orders $49 and up
$ 70.45 USD
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Have you noticed inconsistent electrical power in your interior lately? Your voltage regulator is responsible for maintaining a constant voltage out from the alternator.


Beru - Corporate Logo
T#:23383348
Part#: 12137510738
In Stock
$ 75.02 USD
Free Shipping on orders $49 and up
Is your Mini experiencing sluggish acceleration or misfires? It might be time to check the coil pack. The coil pack plays a crucial role in the ignition system and can affect engine performance. Replace it as necessary or ideally every 100,000 miles to keep your Mini's ignition system operating smoothly.
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Alternator - 150 Amp - Valeo
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Valeo - Corporate Logo
T#:579634
Part#: 439590
In Stock
$ 620.35

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

$ 518.99 USD
Limited Qty Sale
Free Shipping
$ 620.35

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

$ 518.99 USD
Limited Qty Sale
Free Shipping
Karlyn - Corporate Logo
T#:373952
Part#: 12121733020
Ships in 2 Business Days
$ 324.18 USD
Free Shipping
$ 324.18 USD
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For cylinders 1-6

Karlyn - Corporate Logo
T#:373953
Part#: 12121733006
Ships in 2 Business Days
$ 322.74 USD
Free Shipping
$ 322.74 USD
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For cylinders 7-12

OEM Valeo Alternator - 185 amp
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Valeo - Corporate Logo
T#:376244
Part#: 12317525376
Ships in 2 Business Days
$ 730.23

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

$ 647.45 USD
Free Shipping
$ 647.45 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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Valeo New Alternator - 80 Amp - E34, E36
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Valeo - Corporate Logo
T#:377737
Part#: 12311744564
In Stock at Vendor
$ 549.99

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

$ 533.99 USD
Free Shipping
$ 533.99 USD
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Brand new unit with no core charge

Karlyn - Corporate Logo
T#:593964
Part#: 12121705718
In Stock at Vendor
$ 106.51 USD
Free Shipping
$ 106.51 USD
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Replacement Ignition Wire Set from STI-Karlyn
Karlyn - Corporate Logo
T#:593968
Part#: 12121705716
In Stock at Vendor
$ 123.72 USD
Free Shipping on orders $49 and up
If your vehicle has developed a misfire or is having ignition problems it could be the ignition cables. Replace yours today to bring back the functionality of your ignition system.

Valeo Brand New Alternator - E89 Z4 M Coupe/Roadster
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Valeo - Corporate Logo
T#:379218
Part#: 12317837691KT
Ships in 6 Business Days
$ 378.99 USD
Free Shipping
$ 378.99 USD
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This is a brand new Valeo alternator. BMW Alternators are built especially for extremes of heat, cold and high demand. Your BMW deserves nothing less than the best, which is why an OEM Valeo alternator is the best option. BMW alternators are built to last using the highest quality materials and the most technologically advanced processes. All alternator parts are 100% factory tested to assure that they meet or exceed original equipment specifications. And every alternator is fully load tested to guarantee compliance with BMW's strict performance specifications. 

No core charge!

Fits the following BMW Chassis:

E89 BMW Z4 M Coupe, M Roadster

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Alternator
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Valeo - Corporate Logo
T#:594101
Part#: 12318570672
In Stock at Vendor
$ 1,094.99

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

$ 1,062.99 USD
Free Shipping on orders $49 and up
$ 1,062.99 USD
Free Shipping on orders $49 and up
Replacement Alternator from Valeo
Karlyn - Corporate Logo
T#:593963
Part#: 12120407854
In Stock at Vendor
$ 101.63 USD
Free Shipping on orders $49 and up
Replacement Spark Plug Wire Set from STI-Karyln
Karlyn - Corporate Logo
T#:593961
Part#: 12121360603
In Stock at Vendor
$ 49.98 USD
Free Shipping on orders $49 and up
Replacement Spark Plug Wire Set With Long Coil Wire from STI Karlyn


Karlyn - Corporate Logo
T#:369621
Part#: 12121247523
Ships in 1-2 days
$ 181.99 USD
Free Shipping
$ 181.99 USD
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Replace worn out wires and restore performance.
Valeo - Corporate Logo
T#:594588
Part#: 12417616502
Ships in 4 Business Days
$ 265.76 USD
Free Shipping
$ 265.76 USD
Free Shipping
Brand new unit - no core charge! Avoid messing with a core return entirely!
OEM Valeo New Alternator - 230amp
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Valeo - Corporate Logo
T#:383432
Part#: 12317603782
Ships on Aug 13, 2026
$ 730.99 USD
Free Shipping
$ 730.99 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. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!

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Valeo New Alternator - 230 Amp - E71, F01, F02
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Valeo - Corporate Logo
T#:579635
Part#: 439640
Ships on Aug 13, 2026
$ 590.99 USD
Free Shipping
$ 590.99 USD
Free Shipping
New Replacement Alternator From Valeo - 12317603781

Beru - Corporate Logo
T#:14982199
Part#: 121200405516KT
Back Ordered
$ 95.99 USD
Free Shipping on orders $49 and up
$ 95.99 USD
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OEM Valeo Starter (New)
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Valeo - Corporate Logo
T#:380773
Part#: 12417835737
Back Ordered
$ 593.99 USD
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$ 593.99 USD
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A failed starter will leave even the best-maintained BMW stranded. Replace your failed starter motor with this brand new replacement from Valeo. Valeo is an OEM BMW supplier - save money and by quality parts by buying them in a different  box!                          
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OEM Valeo Alternator - E60 E63 E65 550i 650i 750i
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Valeo - Corporate Logo
T#:379446
Part#: 12317542935KT
Back Ordered
$ 444.99 USD
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$ 444.99 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. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!

For vehicles with production date from 03/2005.

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Valeo - Corporate Logo
T#:371896
Part#: 12317501599
In Stock
$ 323.99 USD
Free Shipping
$ 323.99 USD
Free Shipping

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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Beru - Corporate Logo
T#:596879
Part#: 12321350052
In Stock at Vendor
$ 41.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
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Valeo Alternator - 180 Amp - E70
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Valeo - Corporate Logo
T#:377914
Part#: 12317561004
Ships in 6 Business Days
$ 482.99 USD
Free Shipping
$ 482.99 USD
Free Shipping
Brand new unit with no core charge.
Eldor - Corporate Logo
T#:54852008
Part#: 12139453463
In Stock
New Item
$ 77.99 USD
Free Shipping on orders $49 and up
$ 77.99 USD
Free Shipping on orders $49 and up
Sluggish acceleration, misfires, rough idling, poor fuel economy, and check engine lights are symptoms of a worn coil. Located on the top of your engine, these coils should be inspected and replaced as needed or every 60,000 miles to keep your ignition system in perfect order
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Alternator - 220 Amp
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Valeo - Corporate Logo
T#:594099
Part#: 12317560989
Ships on Aug 6, 2026
$ 574.96 USD
Free Shipping
$ 574.96 USD
Free Shipping
Replacement Alternator from Valeo
Alternator
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Valeo - Corporate Logo
T#:594100
Part#: 12317561002
In Stock at Vendor
$ 794.99

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

$ 771.99 USD
Free Shipping
$ 771.99 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.
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Valeo Alternator - E53
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:377182
Part#: 12317540994
Special Order: No Guaranteed ETA
$ 384.99 USD
Free Shipping
$ 384.99 USD
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Restore charging system voltage with a new alternator

Karlyn - Corporate Logo
T#:593956
Part#: 12121279550
In Stock at Vendor
$ 100.78 USD
Free Shipping on orders $49 and up
Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593967
Part#: 12121742888
In Stock at Vendor
$ 248.44 USD
Free Shipping on orders $49 and up
These replacement wires from STI offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593965
Part#: 12121722253
In Stock at Vendor
$ 543.19 USD
Free Shipping on orders $49 and up
Complete OEM style with plastic loom to keep wires nice & neat. Keep your ignition system in prime shape with this set of spark plug wires from ECS Tuning. These replacement wires from Bosch offer a perfect fit and performance match for your worn original equipment. Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
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Karlyn - Corporate Logo
T#:593966
Part#: 12121742887
In Stock at Vendor
$ 246.92 USD
Free Shipping on orders $49 and up
Installs just like stock with stock lengths. An easy way to try to squeeze all the mileage you can out of each tank of gas.
Alternator - 220 Amp
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Valeo - Corporate Logo
T#:639716
Part#: 12317804266
In Stock at Vendor
$ 822.99

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

$ 799.99 USD
Free Shipping
$ 799.99 USD
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Beru - Corporate Logo
T#:168056
Part#: 82110404488
Ships in 1-2 days
$ 79.48 USD
Free Shipping on orders $49 and up

Revitalize your Mini's performance with Beru MINI Cooper Spark Plug Wires, designed to restore power and ensure optimal engine function. Recommended for replacement at 60,000-mile intervals, these wires play a crucial role in maintaining ignition efficiency. If you're experiencing low spark or misfires and have ruled out issues with the coil or spark plugs, faulty spark plug wires could be the culprit. Keep your Mini running smoothly by replacing worn-out wires that may have developed rust on the connections. With this wire set, enjoy happy motoring and consistent spark across all cylinders. Beru MINI Cooper Spark Plug Wires provide the reliability and quality your Mini deserves.

  • Restores power and performance
  • Recommended replacement at 60,000-mile intervals
  • Addresses issues like low spark or misfires
  • Prevents rust buildup for consistent ignition
  • Includes plug wires for cylinders 1 - 4
  • Ensures happy motoring and great spark
MINI IGNITION LEAD RETROFIT KIT B
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Beru - Corporate Logo
T#:338884
Part#: FGR-6DDU
Back Ordered
Sale - Save 17% $ 23.99

This product was last offered at the strikethrough price on
05-14-2026

Starting at $ 20.00 USD
Free Shipping on orders $49 and up
Sale - Save 17%
$ 23.99

This product was last offered at the strikethrough price on
05-14-2026

Starting at $ 20.00 USD
Free Shipping on orders $49 and up
RACING SPARK PLUG FOR M50/M52/M54 ENGINES
These spark plugs are recommended by BMW Motorsport for use in their DTC racing engines. We find a slight horsepower increase and greatly increased durability over the OEM road car spark plugs in competition use. We attribute the improvements to the fact that these spark plugs are designed for the high temperatures and cylinder pressures encountered in a racing engine. These spark plugs are a direct replacement and come pre-gapped just like the factory road car plugs.
Please note: these plugs are not for the S54 engine in the E46 M3, MZ3, or Z4 M
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Remanufactured Alternator - 170A
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:594098
Part#: 12317802929
Ships on Aug 6, 2026
$ 323.99 USD
Free Shipping on orders $49 and up
Replacement Alternator from Valeo
MINI N14 N18 Alternator - 120 Amp 439617
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:28803228
Part#: 12317619254
In Stock
$ 374.99 USD
Free Shipping on orders $49 and up

MINI N14 N18 Alternator is an essential component for powering the electrical system of your Mini. Engineered to provide reliable performance, this alternator ensures your Mini stays running smoothly. Upgrade your Mini with this genuine alternator for dependable power generation.

  • Powers the electrical system
  • Reliable performance
  • Ensures smooth operation
  • Genuine Mini part
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Beru - Corporate Logo
T#:637736
Part#: 12120040551
Back Ordered
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
Beru - Corporate Logo
T#:596875
Part#: 12131730412
Back Ordered
$ 15.99 USD
Free Shipping on orders $49 and up
Sometimes a bad coil may just be a broken or damaged connector boot. This is especially true on cars with a leaking valve cover gasket where the oil has contamintated the rubber boot and the electrical parts inside. This boot can be replaced on its own without having to buy a whole new coil. This part is also useful if you purchased a coil that did not come with a new boot.
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