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BMW Drivetrain Parts for BMW Z Series E85/6 (2003-2008)

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Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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Tool - Slide Hammer Pilot Bearing Puller - CTA Tools

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T#:580739

Part#: CTA8075

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$ 59.32 USD

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$ 59.32 USD

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For inside pulling jobs such as pilot and other bearings.

Extraction and Filling Pump - With Extra Hose

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T#:5028777

Part#: 7073

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$ 28.57 USD

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$ 28.57 USD

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Great for removing & filling Brake Fluid, Anti-Freeze, Gear Oil plus Power Steering Fluid & more

4 Pc. Extractor/Fill Pump Kit

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T#:640935

Part#: CTA7074

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$ 97.57 USD

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$ 97.57 USD

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Transfer oil or fluid with this Extractor/Filling Pump Kit

8-1 Multi-Wrench - 12-19mm Hex

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T#:31357378

Part#: CTA2495

In Stock

$ 57.99 USD

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$ 57.99 USD

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The CTA 8 in 1 Oil & Lube Multi-Wrench is your go-to tool for tackling various oil drain, transfer case, and differential plugs with ease. Designed to fit most plug sizes, this versatile wrench ensures high torque applications are a breeze with its robust construction.

Key Features:

Versatile Fit: Designed to fit most oil drain, transfer case, and differential plugs.
Offset Head Design: Features a yoke support for handling high torque applications.
Secure Locking: Indexing feature to lock the socket into position securely.
Durable Construction: Nickel plating provides enhanced durability and longevity.
Built-In Magnet: Handle includes a magnet for convenient handling of small parts.
6-Point Metric Design: Ensures precise fit and reduced slippage.
Compact Size: Measures 10-1/2” (27cm) in overall length.
Multiple Sizes: Includes sizes 12, 13, 14, 15, 16, 17, 18, and 19mm.

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2 Pc Axle Popper Kit

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T#:5677376

Part#: CTA4017

Ships on Jul 28, 2026

$ 56.46 USD

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$ 56.46 USD

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Separates half-shafts from transaxle

Differential And LSD Tune

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T#:34382136

Part#: BM237HAKT

Ships in 2 Business Days

$ 2,100.00 USD

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$ 2,100.00 USD

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Upgrade to a better performing LSD, includes tune.

E46 M3, E9X M3, E34 M5, E39 M5, Z4 M OS Giken Super Lock Limited Slip...

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T#:1387

Part#: BM237-HA

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$ 1,950.00 USD

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$ 1,950.00 USD

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The M Dynamic limited slip unit on the M3 is designed to be a pure street car differential. It's simply not up to the rigors of professional or amateur racing. The OS Giken Super Lock LSD is giant step up in from a stock M3 lsd unit. It's ready for the extreme conditions of racing, offers 100% progressive locking capability, and is able to do this while operating smoothly and quietly. It's use of advanced technologies that make it perfect for both street cars AND pro race cars... and everything in between. We're excited to be carrying the OS Giken LSD unit in our performance catalog, as we've been using them in our own Championship winning M3 race cars.

OS Giken incorporated revolutionary new ideas when developing the their own limited slip diff, utilizing their accumulated racing knowledge and experience and over 4 years of development. Their design uses an unprecedented number of friction plates (up to 28 total!) for better locking force, better engagement/disengagement, and less generated heat. The end result of their efforts is the OS Giken's OS Super Lock LSD which offers incredible durability and reliability on street and track driven BMWs. The use of highest quality materials, precise machining, forged gears and sound engineering makes this LSD durable and reliable enough for road racing performance (which we can personally vouch for!). This is such a great design, in that it can be used in any situation -- whether it's for a street car, or a 100% Professional race car. Zero break-in required. Super smooth and quiet engagement, and 100% progressive locking capability. Professional installation is recommended.

This Limited Slip Differential Unit fits the following BMWs:
2001-2006 E46 M3 coupe & convertible
2008-2013 E9X M3 coupe & convertible
1991-1995 E34 M5 sedan
1999-2003 E39 M5 sedan
2006-2008 E85 Z4M Z4 M Coupe, Z4 M Roadster

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Slide Hammer Bearing Puller

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T#:641253

Part#: CTA8077

Ships on Jul 28, 2026

$ 78.99 USD

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$ 78.99 USD

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Pilot Bearing Puller

BMW Hub Install Tool

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T#:587175

Part#: CTA1720

Ships on Jul 28, 2026

$ 127.00 USD

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$ 127.00 USD

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Installation tool for the front wheel bearing hub on BMWs that use a stub axle

EXTRACTION/FILLER Pump

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T#:391370

Part#: CTA7077

Ships on Jul 28, 2026

$ 71.46 USD

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$ 71.46 USD

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You will find this 1500 cc Extractor/Filler kit handy for all types of fluid changes

Deep Well Impact Socket - 24mm

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T#:641054

Part#: CTA4995

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$ 13.56 USD

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$ 13.56 USD

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Ideal for many axle nuts and other high-torque fasteners

LSD Tune For OS Giken Differential

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T#:34382134

Part#: LSD-TUNE

Ships in 2 Business Days

$ 150.00 USD

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$ 150.00 USD

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BMW Flywheel Locking Tool

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T#:1150734

Part#: CTA8809

Ships on Jul 28, 2026

$ 78.60 USD

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$ 78.60 USD

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Locks the flywheel while the transmission is removed for service

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