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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Mishimoto - Corporate Logo
T#:378417
Part#: MMTCU
In Stock
9% off MSRP $ 122.00
$ 110.99 USD
Free Shipping
9% off MSRP $ 122.00
$ 110.99 USD
Free Shipping
The Mishimoto Universal Transmission & Power Steering Cooler is used to cool automatic transmissions. Some Mishimoto radiators are only available for manual transmission applications; by using the universal transmission cooler, automatic transmission users have the ability to use our aluminum radiators with their automatic applications that would otherwise require an integrated transmission cooler. Fender bender damage your cooler? Mishimoto has you covered under its no questions asked warranty policy. Mishimoto will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident. Dimensions of this core are 3/4" x 5" x 12". WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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SKF - Corporate Logo
T#:6366602
Part#: 23121209422
Ships Jul 9, 2025
$ 73.99 USD
Free Shipping
$ 73.99 USD
Free Shipping
Important transmission component. Replace at any sign of failure.
Genuine BMW - Corporate Logo
T#:50644
Part#: 23311224388
Ships Jul 9, 2025
Sale - Save 5% $ 340.99
$ 323.30 USD
Free Shipping
Sale - Save 5% $ 340.99
$ 323.30 USD
Free Shipping


Genuine BMW Selector Shaft -
This item fits the following BMW Chassis:
E30,E34


Redline - Corporate Logo
T#:394833
Part#: REDLINE25A
Ships Jul 18, 2025
Starting at $ 90.99 USD
Free Shipping
Starting at $ 90.99 USD
Free Shipping
Red Line MTL may be used in transmissions which recommend 75W, 80W, or 85W GL-4 gear oils, or SAE 30 or 5W/10W30 motor oils. If a 90W GL-4 or SAE 40, 10W40, or 15W40 is required, MT-90 may be used. If the transmission or transaxle requires an SAE 90 GL-5 gear oil, then Red Line 75W90NS or 75W140NS Gear Oil may be used.
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