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BMW Drivetrain Parts for BMW 5 Series E39 (1996-2003)

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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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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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Rubber Mounting 22316771221

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T#:20746

Part#: 22316771221

Ships in 1 Business Day

$ 22.99 USD

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$ 22.99 USD

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RUBBER MOUNTING 22316771221

ZF 320z S5D 5-Speed Manual Transmission Detent Tool Kit

T#:23416568

Part#: RGZFDETENT

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$ 127.99 USD

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$ 127.99 USD

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Required drift/punch set for replacing ZF S5D 320z detent pins and springs, a common cause of the infamous "5th gear lean" among other shifter-related issues.

Engine Mount - Priced Each

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T#:586749

Part#: 22116754608

Ships in 3 Business Days

$ 61.99

This product was last offered at the strikethrough price on
06-08-2026

$ 49.99 USD

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$ 49.99 USD

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OEM Rein Drive Shaft Center Carrier Bearing - E39 528i

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T#:379703

Part#: 26121229242

Back Ordered

$ 26.96 USD

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$ 26.96 USD

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The carrier bearing supports the center of the drive shaft between the transmission and the differential. As miles and age increase, bearing failure can occur resulting in a howling noise. The rubber mount may degrade as well, causing excess vibration from the drive shaft. When disassembling drive shaft make sure to mark each section, as these are balanced as a unit.

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Differential And LSD Tune

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.

Transmission Filter Kit

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T#:369365

Part#: A5S325Z

Ships in 3 Business Days

$ 42.99 USD

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$ 42.99 USD

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OEM Rein Automatic Transmission Filter Kit - E46 E39 E85

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T#:2935

Part#: 24341423376KIT

Ships in 3 Business Days

$ 43.99 USD

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$ 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

For vehicles with A5S325Z transmission only, from 03/2001 production date

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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

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Differential Oil Drain Plug

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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 Automatic Transmission Oil Pan Gasket - E39, E46, Z4

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T#:12451

Part#: 24341423376

Ships in 3 Business Days

$ 12.99 USD

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$ 12.99 USD

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OIL FILTER:241030

OEM Rein Shifter Ball Bushing - Multiple BMWs

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T#:362834

Part#: 25111220600

In Stock

$ 7.57 USD

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$ 7.57 USD

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This bushing is the point where the shifter arm pivots. If you are experiencing excess play in your shifter, this could be the cause. Worn out shifter ball bushings allow too much movement from wear over time.

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BMW Aluminum Bolt

T#:46478545

Part#: 23000417164S

In Stock

$ 7.99 USD

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$ 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.

OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...

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T#:379685

Part#: 24311422671

Ships in 3 Business Days

$ 10.99 USD

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$ 10.99 USD

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The input shaft seal on your transmission ensures that you will not experience any fluid loss from behind the guide sleeve. If you have a leak, be sure to replace it as soon as possible to avoid losing too much fluid, which can ultimately damage your transmission.

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Rein Transmission Input Shaft Seal - E31, E34, E39, E46, E52 ...

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T#:363449

Part#: 23127501328

In Stock

$ 16.99 USD

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$ 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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T#:19654

Part#: 07119963355

Ships in 3 Business Days

$ 2.03 USD

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$ 2.03 USD

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GASKET RING for various sensors and seals.

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