BMW Drivetrain Parts for BMW E21 320i M10 1.8L

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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 & Mini Models
OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...
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Rein - Corporate Logo
T#:38890943
Part#: HWU0065
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$ 22.79 USD
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$ 23.99

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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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Pentosin ATF 8 Automatic Transmission Fluid - 1 Liter - BMW 8HP Transmissions
Pentosin ATF 8 Automatic Transmission Fluid - 1 Liter - BMW 8HP Trans...
Pentosin - Corporate Logo
T#:45963154
Part#: 1058110
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$ 26.95 USD
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Transmission fluid is responsible for both cooling and lubricating sensitive transmission components. Over time, this fluid becomes contaminated by particulate from clutch and gear components wearing down. This contamination reduces the fluid's ability to act as a lubricant, eventually leading to increased wear and tear within the transmission. To prevent excess wear and keep your transmission in top shape, the fluid and filter should be replaced regularly. As per ZF's recommendations, we suggest performing a full service on your 8HP automatic transmission every 50,000 miles. If your vehicle has been modified to produce more power than stock or if it is regularly track-driven, we recommend shorter 30,000-mile service intervals. This will ensure your transmission's fluid is free from contamination, which will help extend the life of internal transmission components, such as clutch packs and solenoids.
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OEM Rein Driveshaft Center Support Bearing - E21 E28 E10 E12 E23 E24
OEM Rein Driveshaft Center Support Bearing - E21 E28 E10 E12 E23 E24 ...
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379750
Part#: 26111206502
Ships in 2 Business Days
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$ 22.79 USD
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Center support bearings help to add some support to the driveshaft in a BMW. Because it is designed to be a two piece system, bracing needs to be added to the center to keep your driveshaft in line and tight. If you are noticing excessive vibration or gear noise in your vehicle, it may be time to replace the support bearing.
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Genuine BMW Output Shaft Seal
Genuine BMW Output Shaft Seal
For vehicles with a production date from 09/1979 up to 09/1982
Genuine BMW - Corporate Logo
T#:181126
Part#: 23121205342
In Stock
Sale - Save 9% $ 29.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.15 USD
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This product was last offered at the strikethrough price on
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Genuine BMW Shaft Seal - 40X55X8
This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Genuine BMW Clutch Release/Throw-Out Bearing
Genuine BMW Clutch Release/Throw-Out Bearing
Genuine BMW - Corporate Logo
T#:12563
Part#: 21517521471
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Sale - Save 8% $ 106.39

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 98.41 USD
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$ 106.39

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Genuine BMW Clutch Release Bearing -
This item fits the following BMW Chassis:
E30,E34,E36,E39,E46,E53 X5,E85

Pentosin ATF 8 Automatic Transmission Fluid - 5 Liters - BMW 8HP Transmissions
Pentosin ATF 8 Automatic Transmission Fluid - 5 Liters - BMW 8HP Tran...
Pentosin - Corporate Logo
T#:45997487
Part#: 1058210
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Sale - Save 5% $ 131.99

This product was last offered at the strikethrough price on
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$ 125.08 USD
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$ 131.99

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Genuine BMW Shift Lever
Genuine BMW Shift Lever
Genuine BMW - Corporate Logo
T#:13287
Part#: 25117533354
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Sale - Save 8% $ 80.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.86 USD
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$ 80.99

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Genuine BMW Shift Lever-Lower Part -
This item fits the following BMW Chassis:
E30

Genuine BMW Counter Shaft Roller Bearing
Genuine BMW Counter Shaft Roller Bearing
Genuine BMW - Corporate Logo
T#:49988
Part#: 23121224076
In Stock
Sale - Save 8% $ 74.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 68.99 USD
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$ 74.99

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$ 68.99 USD
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Genuine BMW Roller Bearing - 44X25X19,65
This item fits the following BMW Chassis:
E30,E34

Axle Bearing Seal - Priced Each
Axle Bearing Seal - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:26038535
Part#: 33113604119
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This product was last offered at the strikethrough price on
05-03-2026

$ 2.44 USD
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$ 3.99

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Bremmen Parts Axle Bearing Seal - ID=81mm/2mm

This item fits the following BMW chassis:

E10 E21 E30 E36 E36/7 Z3

Elring OEM BMW Front Axle Shaft Seal 31211101114 - E10, E21
Elring OEM BMW Front Axle Shaft Seal 31211101114 - E10, E21
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Elring - Corporate Logo
T#:7718
Part#: 31211101114
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Sale - Save 63% $ 11.59

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$ 4.28 USD
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$ 11.59

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OEM BMW FRONT AXLE SHAFT SEAL 31211101114.--

This item fits the following BMWs:
BMW 1600, 2002
BMW 3 Series - 320i

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Genuine BMW Copper Washer - 16 X 22 X 1.5 mm - Cooling Line Fitting at Transmission - E28
Genuine BMW Copper Washer - 16 X 22 X 1.5 mm - Cooling Line Fitting a...
Genuine BMW - Corporate Logo
T#:28589
Part#: 07119963276
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Sale - Save 27% $ 1.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1.45 USD
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$ 1.99

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Genuine BMW Gasket Ring -
This item fits the following BMW Chassis:
E30

Pentosin Super DOT4 Brake Fluid - 1 Liter
Pentosin Super DOT4 Brake Fluid - 1 Liter
Pentosin - Corporate Logo
T#:348645
Part#: BF1P4
In Stock
Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
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$ 18.99 USD
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Boiling Point - Dry 265°C (509°F) / Wet >165°C (329°F)
Rein Driveshaft Center Support Bearing
Rein Driveshaft Center Support Bearing
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379700
Part#: 26121225071
In Stock
Sale - Save 59% $ 30.98

This product was last offered at the strikethrough price on
08-23-2026

$ 12.83 USD
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This product was last offered at the strikethrough price on
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Commonly referred to as "carrier bearing"
OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 E32 E34 E36 E38 E39 E52 E53
OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...
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Rein - Corporate Logo
T#:379685
Part#: 24311422671
Ships in 4 Business Days
Sale - Save 5% $ 10.99

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$ 10.44 USD
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$ 10.99

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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 SEAL (40X58X10) - E12, E21
Rein TRANSMISSION SEAL (40X58X10) - E12, E21
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Rein - Corporate Logo
T#:19834
Part#: 24111207426
Ships in 4 Business Days
Sale - Save 5% $ 13.99

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$ 13.29 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. For front wheel drive vehicles equipped with manual transmissions only.
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Rein Selector Rod Shaft Seal - E12, E21, E23, E24, E28
Rein Selector Rod Shaft Seal - E12, E21, E23, E24, E28
For vehicles with a production date from 04/1977
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:592120
Part#: 24527509500
Ships in 2 Business Days
Sale - Save 5% $ 4.07

This product was last offered at the strikethrough price on
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$ 3.87 USD
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$ 4.07

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10x18x5mm seal - stop leaks in their tracks
OEM Rein CV Boot Repair Kit - E21 E10
OEM Rein CV Boot Repair Kit - E21 E10
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:12274
Part#: 33219067911
Ships in 2 Business Days
Sale - Save 5% $ 10.99

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$ 10.44 USD
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This is the OEM Rein rear axle boot kit for the CV joint. The kit includes the boot, clip, clamp, and grease.
Transmission Fluid Service Kit
Transmission Fluid Service Kit
Pentosin - Corporate Logo
T#:57725172
Part#: 83220142516
Ships in 4 Business Days
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Sale - Save 5% $ 462.99

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$ 439.38 USD
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Keep your transmission performing at its peak on both the street and the track with high-grade synthetic fluid designed for modern automatic gearboxes.
Genuine BMW Ball Cup Lower - 25111207744 - E30
Genuine BMW Ball Cup Lower - 25111207744 - E30
Genuine BMW - Corporate Logo
T#:7616
Part#: 25111207744
In Stock
Sale - Save 17% $ 7.99

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$ 6.64 USD
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Replace your damaged shifter cup to ensure smooth shifter operation.


Genuine BMW Ball Cup Lower -
This item fits the following BMW Chassis:
E30

 

Shifter Rebuild Hardware Kit
Shifter Rebuild Hardware Kit
Genuine BMW - Corporate Logo
T#:55209897
Part#: 234112008KT
Ships in 3 Business Days
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$ 12.63 USD
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$ 12.63 USD
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This Genuine BMW hardware rebuild kit includes the vital factory spacer sleeve and the corresponding tension compression spring, making it easier to restore crisp shifting.
Rein Differential Drain Plug Gasket
Rein Differential Drain Plug Gasket
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:19654
Part#: 07119963355
Ships in 5 Business Days
Sale - Save 5% $ 2.03

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$ 1.93 USD
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GASKET RING for various sensors and seals.
Pentosin ATF 9 Automatic Transmission Fluid - 1 Liter
Pentosin ATF 9 Automatic Transmission Fluid - 1 Liter
Pentosin - Corporate Logo
T#:46134785
Part#: 1058111
In Stock
Sale - Save 7% $ 35.99

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$ 33.41 USD
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Pentosin ATF9 is specially developed with reduced viscosity to optimize the performance of the latest generation 8 and 9-speed ZF automatic transmissions. Pentosin ATF 9 has been developed to deliver outstanding friction control to ensure excellent shifting performance.
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Pentosin ATF 9 Automatic Transmission Fluid - 5 Liters
Pentosin ATF 9 Automatic Transmission Fluid - 5 Liters
Pentosin - Corporate Logo
T#:46134786
Part#: 1058211
In Stock
Sale - Save 5% $ 163.99

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$ 155.15 USD
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Pentosin ATF9 is specially developed with reduced viscosity to optimize the performance of the latest generation 8 and 9-speed ZF automatic transmissions. Pentosin ATF 9 has been developed to deliver outstanding friction control to ensure excellent shifting performance.
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