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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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MOTUL 75W-90 GEAR 300 Synthetic Gear and Differential Fluid

T#:2451

Part#: MOGR300-75W90

In Stock

10% off MSRP $ 37.85

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

$ 34.06 USD

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10% off MSRP

$ 37.85

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

$ 34.06 USD

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This MOTUL SAE 75W90 gearbox and differential fluid is a 100% synthetic ester based oil, which can be used in tranmissions and rear differentials under all conditions of use -- street, track and racing. This oil has proved its qualities and resistance to extreme conditions. We would not hesitate to use this MOTUL 75W-90 GEAR 300 gear oil on our own personal vehicles, and neither should you. Be sure to check your owners manual before selecting oil products for street applications. This is a 1 liter bottle, so be sure to order enough for your specific application. API GL-5.MIL-L-2105D.

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Febi Febi Manual Transmission Fluid (75w-80) - 1 Liter

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T#:1180762

Part#: G052911

In Stock

$ 29.99

This product was last offered at the strikethrough price on
07-10-2026

$ 22.99 USD

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$ 22.99 USD

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Fully synthetic high performance GL-5 gear oil excellent lubricating properties, high ageing resistance, and high wetting and adhesion properties

300V 5w40 "Competition" - 2 Liters

T#:13957881

Part#: 110817

In Stock

10% off MSRP $ 60.83

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

$ 54.74 USD

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10% off MSRP

$ 60.83

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

$ 54.74 USD

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Use for Endurance/Rally/ GT/ Historic racing 100% synthetic racing motor oil based on ESTER Core® technology. Through technical partnerships with most prestigious Teams of car racing, MOTUL has developed a wide range of lubricants for Racing and Sport cars. The 300V motorsport line improves performance of the latest generation engines along with high protection against wear, oil pressure drop and oxidation due to high temperature. Power & engine protection. Medium to high engine dilution. Color: Visual Orange Viscosity grade SAE J 300 5W-40 Density at 20°C (68°F) ASTM D1298 0.850 Viscosity at 40°C (104°F) ASTM D445 78.7 mm²/s Viscosity at 100°C (212°F) ASTM D445 13.5 mm²/s HTHS viscosity at 150°C (302°F) ASTM D4741 4.0 mPa.s Viscosity Index ASTM D2270 176.0 Pour point ASTM D97 -48.0 °C / -54.0 °F Flash point ASTM D92 234.0 °C / 453.0 °F

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MOTUL 300V 10W-40 Chrono Race Oil - 2 liter can

T#:2448

Part#: MO300V-10W40-2L

Ships on Aug 5, 2026

28% off MSRP $ 60.99

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

$ 43.99 USD

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28% off MSRP

$ 60.99

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

$ 43.99 USD

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10W40 MOTUL 300V series "CHRONO" competition racing oil is a true racing lubricant for true race cars. Designed for high temperatures, high shear, and the rigors of professional and endurance racing. MOTUL has developed Double Ester Technology for new 300V series, superior to complex ester which was previously recognized as the best base oil (up to now!). Double Ester Technology, made by carefully balancing the ratio of complex ester and the newly developed macromolecular high polymer ester, enable base oil more wide-ranged, and delivers high output performance and superior reliability.

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Backup Light Switch - E30 E28 E24 E23 E32 E34

T#:13246

Part#: 23141354071

In Stock

$ 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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Febi Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32, ...

We Price Match - Give Us A Call or Chat!

T#:381870

Part#: 23121205340

In Stock

$ 5.23 USD

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$ 5.23 USD

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Located on the tail stock of the transmission

Motylgear Manual Transmission / Differential Fluid 75w90 - 1 Liter ...

T#:340559

Part#: 317011

Back Ordered

10% off MSRP $ 20.44

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

$ 18.40 USD

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10% off MSRP

$ 20.44

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

$ 18.40 USD

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Flushing and replacing your manual transmission and differential fluid is one way to ensure that components wear properly to avoid costly problems down the road. Your owner's manual will specify intervals for flushing and refill.

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Selector Shaft Seal - Priced Each

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T#:16208928

Part#: 23111204223

In Stock

$ 7.99

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

$ 6.99 USD

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$ 6.99 USD

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Elring Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32...

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

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

Elring Input Shaft Seal - E12, E21, E23, E24, E3, E30, E9

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

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

Elring Selector Shaft Seal - E36, E39, E46, E36 Z3

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

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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Meistersatz O-Ring

T#:403820

Part#: 24341422152

In Stock

$ 4.99 USD

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$ 4.99 USD

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Used in various parts of the transmission

Elring Manual Transmission Gasket Set - E10, E21

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:596462

Part#: 23009065645

In Stock at Vendor

$ 54.62 USD

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$ 54.62 USD

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Stop your transmission leak

300V 15w50 "Competition" - 2 Liters

T#:11660857

Part#: 110860

Special Order: No Guaranteed ETA

10% off MSRP $ 60.83

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

$ 54.74 USD

Add to Wish List

Qty

10% off MSRP

$ 60.83

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

$ 54.74 USD

Add to Wish List

Motul Motyl Gear SAE 75W80 Gear Oil - 1 Liter Bottle (1.05 Quart) ...

T#:2249

Part#: MOTY-75W80-1L

Ships on Aug 17, 2026

10% off MSRP $ 20.44

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

$ 18.40 USD

Add to Wish List

Qty

10% off MSRP

$ 20.44

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

$ 18.40 USD

Add to Wish List

Motul Motylgear 75W80 is a gear oil/gearbox lubricant especially recommended for hard to shift gearboxes and also for BMW, Peugeot, Citroen, and Renault gearboxes. Motul has formulated Motylgear 75W-80 as an extreme pressure lubricant for efficient anti-wear protection and reinforced it with synthetic base stocks for a better resistance at high temperature and for longer life.

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