BMW Drivetrain Parts for BMW 3 Series E46 (1999-2005)

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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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OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...
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Rein - Corporate Logo
T#:38890943
Part#: HWU0065
In Stock
$ 23.99 USD
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$ 23.99 USD
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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064
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Driveshaft Center Support Bearing - E46, Z4
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Rein - Corporate Logo
T#:1435
Part#: 26127501257
In Stock
$ 35.99 USD
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Replacement center support bearing for the driveshaft. Often the cause of annoying vibrations and clunking noises during take-offs. This is the OEM aluminum bracket with bearing. Applications:
1999-2005 E46 323, 325, 328, 330 models with manual, automatic, or SMG transmission (not including 325xi or 330xi models)
2001-current Z4 2.5, Z4 3.0, Z4 3.0si with manual, automatic, or SMG transmission
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Ina Clutch Release/Throw-out Bearing - E46, E53, E60, E83, Z4 ...
For vehicles with production date from 03/2003
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Ina - Corporate Logo
T#:19646
Part#: 21517521360
Ships in 1 Business Day
$ 74.38

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

$ 73.53 USD
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$ 73.53 USD
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CLUTCH CLUTCH RELEASE BEARING

Valeo Single Mass Clutch Kit - E46 325xi (Thru 08/03), 330i 5 speed (...
For vehicles with 5 speed transmission and production date up to 03/2003 For vehicles with production date up to 03/2003
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Valeo - Corporate Logo
T#:3578
Part#: 21207531843
Ships in 1 Business Day
$ 896.33 USD
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$ 896.33 USD
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Single mass flywheels can be resurfaced while it is recommended that dual mass flywheels are not.
Dual mass flywheels contain a rubber damper that will wear out, single mass flywheels do not have this and are inherently easier to maintain
Single mass flywheels also provide more consistent clutch feel when compared to the dual mass "self-adjusting" clutch that is notorious for inconsistency.
Valeo's single mass flywheel conversion is designed to be a similar weight and mass to OEM, making it an ideal choice for a daily driver
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Transmission Mount - Priced Each
Two required per vehicle, this mount is from the E46 M3 and is an upgrade to your vehicle
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Rein - Corporate Logo
T#:361233
Part#: 22322282340
Back Ordered
$ 41.99 USD
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$ 41.99 USD
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Secure the rear of the transmission to the crossmember. Made in Germany.
Valeo Single Mass Clutch Kit - 330i 6 speed
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Valeo - Corporate Logo
T#:400593
Part#: 835101
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$ 1,242.99 USD
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$ 1,242.99 USD
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Water Pump
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Rein - Corporate Logo
T#:392718
Part#: 11517838118
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$ 209.99 USD
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$ 209.99 USD
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Valeo Single Mass Flywheel Conversion Kit - E39 E46 Z3 M52 2.5L ...
For vehicles with a production date up to 09/2003
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Valeo - Corporate Logo
T#:380538
Part#: 52401225
Ships on Sep 4, 2026
$ 1,016.99 USD
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$ 1,016.99 USD
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This kit from Valeo is a simple way to easily convert your stock dual mass flywheel clutch system to a single mass system.

Dual mass flywheels allow for fluid-feeling clutch engagements and offer a more luxurious feel than single-mass flywheels. However, with these benefits come significant drawbacks. Why convert from a dual-mass flywheel to a single-mass flywheel?

Cost: Dual-mass flywheels are expensive, with the cost of replacement often times being double or triple than that of converting to a single-mass flywheel.
Serviceability: Single-mass flywheels can be resurfaced, eliminating the need to replace with the next clutch service. - something that is not recommended with dual-mass flywheels, as they contain a rubber section that is more failure-prone in high mileage application.
Simplicity: Single-mass flywheels lack the complexity of dual-mass flywheels, making them inherently more reliable. Dual-mass flywheels contain a rubber damper or hub that will, like all rubber components, wear out with time.
Pedal Feel: Many enthusiasts prefer to eliminate BMW's "Self Adjusting Clutch", which has been known to provide an unpredictable, inconsistent engagement point.
Driveability: Valeo's conversion kit has been designed to maintain nearly identical clutch and flywheel weight, ideal for keeping the clutch quiet and easy to drive.
Kit contents:

Single-mass flywheel
Non-Self Adjusting Clutch and pressure plate
Throw out bearing
Pressure plate bolts
Flywheel bolts
Clutch alignment tool

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OEM Rein Automatic Transmission Filter Kit - E46 E39 E85
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Rein - Corporate Logo
T#:2935
Part#: 24341423376KIT
Ships in 3 Business Days
$ 43.99 USD
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Automatic transmissions are reliable, shift smoothly, and can last without issue so long as they are properly maintained. Over time, the transmission fluid becomes thick and the filter becomes contaminated with small metal particles. This can cause excess wear, high transmission operating temperatures, and eventual failure. To prevent this we recommend changing your filter, fluid, and seals to ensure your transmission continues to operate flawlessly. We recommend filter and fluid changes every 50,000 miles. This filter fits A5S325Z automatic transmissions on BMW E46 323i 323ci 325i 325ci 328i 328ci 330i 330ci . E39 525i 528i 530i. E85 Z4 2.5i Z4 3.0i. This kit includes the transmission filter and gasket.

Kit Contents:

  • 1 x 24341423376 - transmission filter
  • 1 x 24101423380 - gasket for transmission filter

This item fits the following BMWs:
3/2000-2004 E46 BMW 323i 323ci 325i 325ci 330i 330ci
2003-2005 E46 BMW 325i with M56 engine
3/2001-2003 E39 BMW 525i 530i
2003-2006 E85 BMW Z4 2.5i Z3 3.0i

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Transmission Filter Kit
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Rein - Corporate Logo
T#:369365
Part#: A5S325Z
Ships in 3 Business Days
$ 42.99 USD
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Valeo Clutch Kit - E39, E46, Z3
For vehicles with 5 speed transmission and production date up to 03/2003 For vehicles with production date up to 03/2003
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Valeo - Corporate Logo
T#:378253
Part#: 52401223
Ships in 5 Business Days
$ 526.99 USD
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$ 526.99 USD
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Includes pressure plate, throw out bearing, and friction disc
OEM Rein CV Boot Repair Kit - Inner - E46 E53
For use on front axles
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Rein - Corporate Logo
T#:12272
Part#: 31607565315
Ships in 3 Business Days
$ 53.99

This product was last offered at the strikethrough price on
04-15-2026

$ 30.99 USD
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$ 30.99 USD
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This CV boot kit works on both front inner CV joints. Kit includes the following parts;

Boot
Grease
Attaching clamps

BMW Repair Kit Bellows, Interior
This item fits the following BMW Chassis:
E53 48IS,E46,E53 X5

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Rein Driveshaft Center Support Bearing
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Rein - Corporate Logo
T#:379700
Part#: 26121225071
Ships in 3 Business Days
$ 13.50 USD
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$ 13.50 USD
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Commonly referred to as "carrier bearing"
Transmission Filter
For sedan models with A5S325Z transmission and production date up to 03/2002. For touri... For vehicles with A5S325Z transmission only, up to 03/2003 production date For vehicles with A5S325Z transmission only, from 03/2000 production date
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Rein - Corporate Logo
T#:350821
Part#: 24341423376
In Stock
$ 24.47

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

$ 19.99 USD
Limited Qty Sale
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$ 24.47

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

$ 19.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
INA Clutch Pilot Bearing
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Ina - Corporate Logo
T#:399014
Part#: 034105313A
In Stock
$ 8.15

This product was last offered at the strikethrough price on
06-16-2026

$ 6.99 USD
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$ 6.99 USD
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Whenever you replace your clutch, you want to be sure that every single part that can be serviced while disassembled is new and in great shape. This saves you time down the road if a small component not serviced in a clutch change fails. This is a perfect replacement for your clutch pilot bearing with the same outside and inside diameter. A great way to be sure that everything installed during your clutch change works in harmony.
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Rein Automatic Transmission Oil Pan Gasket - E39, E46, Z4
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Rein - Corporate Logo
T#:12451
Part#: 24341423376
Ships in 3 Business Days
$ 12.99 USD
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OIL FILTER:241030

Differential Oil Drain Plug
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Rein - Corporate Logo
T#:27405453
Part#: 33117525064
In Stock
$ 14.99

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

$ 9.99 USD
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$ 9.99 USD
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Rein - Corporate Logo
T#:46478545
Part#: 23000417164S
In Stock
$ 7.99 USD
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This is a single-use bolt and should be replaced every time it’s removed. Don’t let a major repair come to a halt because you’re missing the proper hardware.

Rein Transmission Input Shaft Seal - E31, E34, E39, E46, E52 ...
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Rein - Corporate Logo
T#:363449
Part#: 23127501328
In Stock
$ 16.99 USD
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A common source of leaks with higher mileage, this seal should be replaced any time a leak is spotted to prevent much more catastrophic repairs.
Rein Differential Drain Plug Gasket
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Rein - Corporate Logo
T#:19654
Part#: 07119963355
Ships in 3 Business Days
$ 2.03 USD
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GASKET RING for various sensors and seals.

Rein Magnetic Transmission Drain Plug
Fill and drain plug for vehicles with transmission code GS5X37BZ and production date fr... For vehicles with production date from 03/2003
Rein - Corporate Logo
T#:53785537
Part#: HWU0117
Back Ordered
New Item
$ 16.99 USD
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$ 16.99 USD
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Magnetic Rein Transmission Plug Features Aluminum Construction with OE Dimensions and Threading. Magnetic Tip for Upgrade over Stock. Lightweight and Durable Construction Designed to Interface Perfectly with Modern Alloy Gear Housings
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Valeo - Corporate Logo
T#:580072
Part#: 828484
Back Ordered
$ 906.99 USD
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$ 906.99 USD
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Replacement clutch kit from Valeo for the single mass flywheel conversion kit (ES2702807)