BMW Transmission Parts for BMW E21 320i M10 1.8L

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Looking for parts for your BMW automatic transmission or manual transmission? You'll find many of the parts available to service your BMW's transmission here. While internal transmission servicing and rebuilding should be done by professionals, there are a lot of things on the outside of the transmission that you can service or replace yourself. These include gearbox seals, o-rings, gaskets, automatic transmission filters, backup light switches, mounting bolts, flanges, collar nuts, screw plugs, Mechatronics, and more.

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Elring Manual Transmission Gasket Set - E10, E21
Elring Manual Transmission Gasket Set - E10, E21
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:596462
Part#: 23009065645
Ships in 2 Business Days
$ 56.75

This product was last offered at the strikethrough price on
08-31-2026

$ 50.35 USD
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$ 50.35 USD
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Stop your transmission leak
Elring Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32, E34, E9
Elring Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32...
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:13243
Part#: 23121205340
In Stock
$ 9.99

This product was last offered at the strikethrough price on
04-10-2026

$ 4.99 USD
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$ 4.99 USD
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SHAFT SEAL:H23120
Backup Light Switch - E30 E28 E24 E23 E32 E34
Backup Light Switch - E30 E28 E24 E23 E32 E34
FAE - Corporate Logo
T#:13246
Part#: 23141354071
Ships in 6 Business Days
$ 12.99

This product was last offered at the strikethrough price on
09-01-2026

$ 11.99 USD
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$ 11.99 USD
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This is the reverse light switch that is mounted on the back of the transmission. Only for cars with manual transmission.

This item fits the following BMWs:
1977-1983 E21 BMW 320i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1976-1981 E12 BMW 528i 530i
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1991 E34 BMW 525i 530i 535i 540i M5
1982-1989 E24 BMW 633csi 635csi M6
1981-1987 E23 BMW 733i 735i
1988-1991 E32 BMW 735i 735ill
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Elring Selector Shaft Seal - E36, E39, E46, E36 Z3
Elring Selector Shaft Seal - E36, E39, E46, E36 Z3
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:340660
Part#: 23121222677
In Stock
$ 5.14 USD
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$ 5.14 USD
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Rubber seals are often hardened and damaged by excessive heat and constant temperature changes causing them to become brittle and crack or split. If your seal has split, replace it with a new Elring seal for long reliability and to prevent further problems.

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW's:
E36, E39, E46, E36 Z3

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Elring Input Shaft Seal - E12, E21, E23, E24, E3, E30, E9
Elring Input Shaft Seal - E12, E21, E23, E24, E3, E30, E9
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:375352
Part#: 23111228314
In Stock
$ 7.13 USD
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$ 7.13 USD
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For vehicles with manual transmission only
Meyle Automatic Transmission Fluid Plus 9 - 1 Liter
Meyle Automatic Transmission Fluid Plus 9 - 1 Liter
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55569543
Part#: 0140193200
Ships on Sep 18, 2026
New Item
$ 27.99 USD
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$ 27.99 USD
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Don't let fluid breakdown slow down your shifts or trigger performance-robbing transmission slip when you're pushing your car to the limit. This Meyle ATF Plus 9 high-performance transmission fluid is engineered to withstand the extreme thermal loads and intense shear stress generated during aggressive street driving and high-RPM track sessions. Its advanced synthetic formula provides a robust lubricating film that limits friction within the gearsets and maintains crisp clutch engagement, ensuring your multi-speed automatic handles rapid downshifts and hard acceleration flawlessly.
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