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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Pentosin Super DOT4 Brake Fluid - 1 Liter
2X Entries For Our G87 M2 Sweepstakes!
Pentosin - Corporate Logo
T#:348645
Part#: BF1P4
In Stock
$ 19.99 USD
Free Shipping on orders $49 and up
Boiling Point - Dry 265°C (509°F) / Wet >165°C (329°F)
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!
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
Free Shipping on orders $49 and up
$ 4.99 USD
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SHAFT SEAL:H23120
Genuine BMW - Corporate Logo
T#:12565
Part#: 25111220439
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
Plastic washer used in various points of the shifter mechanism.

Redline - Corporate Logo
T#:394725
Part#: REDLINE1A
In Stock
$ 18.99

This product was last offered at the strikethrough price on
06-16-2026

Starting at $ 18.79 USD
Free Shipping on orders $49 and up
Starting at $ 18.79 USD
Free Shipping on orders $49 and up

All sets of 12 now 10% off regular price!

Synthetic D4 ATF is suitable for use where Dexron III, Dexron II, or Mercon fluids are recommended. ATF D4 is similar to Red Line's MTL formula and can be used in many BMW manual transmissions where MTF or MTF-LT2 is called for. The D4 ATF provides significantly improved gear protection than most OEM oils. The balanced frictional characteristics provides smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure.

Features:

  • Provides G-4 level gear protection (suitable for transmissions and transaxles, like the Corvette T-56).
  • Provides smooth and consistent shifts.
  • More stable than petroleum fluids; suitable for extended drain intervals.
  • Does not varnish at high temperatures.
  • Improved cold weather characteristics.
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Meistersatz - Corporate Logo
T#:403820
Part#: 24341422152
In Stock
$ 4.99 USD
Free Shipping on orders $49 and up
$ 4.99 USD
Free Shipping on orders $49 and up
Used in various parts of the transmission
Genuine BMW - Corporate Logo
T#:28589
Part#: 07119963276
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up
$ 1.99 USD
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Genuine BMW Gasket Ring -
This item fits the following BMW Chassis:
E30


Rein Selector Rod Shaft Seal - E12, E21, E23, E24, E28
For vehicles with a production date from 04/1977
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:592120
Part#: 24527509500
Ships in 1 Business Day
$ 4.07 USD
Free Shipping on orders $49 and up
$ 4.07 USD
Free Shipping on orders $49 and up
10x18x5mm seal - stop leaks in their tracks
Ball Cup Bushing - Lower
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:397576
Part#: 25111207744
In Stock
$ 5.99 USD
Free Shipping on orders $49 and up
component for manual transmissions.

CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
Ships in 3 Business Days
New Item
$ 499.00 USD
Free Shipping
$ 499.00 USD
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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Rein TRANSMISSION SEAL (40X58X10) - E12, E21
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:19834
Part#: 24111207426
Ships in 3 Business Days
$ 13.99 USD
Free Shipping on orders $49 and up
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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High Performance Gear Oil (GL4+) SAE 75W-90 (20L JUG)
We Price Match - Give Us A Call or Chat!
Liqui-Moly - Corporate Logo
T#:577975
Part#: 20014
In Stock at Vendor
$ 500.99 USD
$ 500.99 USD

Turner Motorsport recommends flushing and replacing your manual transmission and differential fluid regularly to ensure proper component wear and prevent costly issues in the future. Refer to your owner's manual for specific intervals for flushing and refill.

Liqui Moly Gear Oil for your BMW

This fully synthetic 75w90 weight gear oil is designed to maintain smooth shifting in your transmission. Its unique multi-viscosity formula provides excellent protection in all weather conditions. Being fully synthetic, it guarantees smoother shifts across all vehicles.

Note: Verify that your application requires GL4 oil. This product meets API GL-4+ specifications.

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Lock Plate For Output Flange Nut
2X Entries For Our G87 M2 Sweepstakes!
ZF - Corporate Logo
T#:594165
Part#: 23221201330
In Stock at Vendor
$ 7.13 USD
Free Shipping on orders $49 and up
Replacement Lock Plate For Output Flange Nut from ZF


Elring Manual Transmission Gasket Set - E10, E21
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:596462
Part#: 23009065645
In Stock at Vendor
$ 55.57 USD
Free Shipping on orders $49 and up
Stop your transmission leak
OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:379685
Part#: 24311422671
Ships in 3 Business Days
$ 10.99 USD
Free Shipping on orders $49 and up
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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Genuine BMW - Corporate Logo
T#:7582
Part#: 23221201330
Ships in 2 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up


Genuine BMW Securing Plate -
This item fits the following BMW Chassis:
E30,E34


Genuine BMW - Corporate Logo
T#:7616
Part#: 25111207744
Ships in 2 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up

Replace your damaged shifter cup to ensure smooth shifter operation.


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

 


Pentosin - Corporate Logo
T#:46134785
Part#: 1058111
Ships on Aug 18, 2026
$ 31.99 USD
Free Shipping on orders $49 and up
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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Redline - Corporate Logo
T#:201458
Part#: 21404
Ships on Aug 24, 2026
$ 18.99 USD
Free Shipping on orders $49 and up
  • Recommended for API CJ-4/CI-4 Plus/CI-4/CF/CH-4/CF-4
  • Popular for Light Duty trucks including Chevrolet Duramax, Dodge Cummins, Ford Power Stroke
  • Best choice in medium and heavy-duty diesel truck engines for maximum durability
  • Improved drain intervals provide excellent value for commercial fleet use
  • Also for API SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4 E7/E9, MB 228.3
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    Motul - Corporate Logo
    T#:2249
    Part#: MOTY-75W80-1L
    Ships on Aug 28, 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
    Free Shipping on orders $49 and up
    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
    Free Shipping on orders $49 and up
    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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    Motul - Corporate Logo
    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
    Free Shipping on orders $49 and up
    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
    Free Shipping on orders $49 and up

    Liqui-Moly - Corporate Logo
    T#:56291001
    Part#: 22080
    In Stock at Vendor
    New Item
    4% off MSRP $ 24.99

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

    $ 23.99 USD
    Free Shipping on orders $49 and up
    4% off MSRP
    $ 24.99

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

    $ 23.99 USD
    Free Shipping on orders $49 and up

    Meyle - Corporate Logo
    T#:55569543
    Part#: 0140193200
    Special Order: No Guaranteed ETA
    New Item
    $ 24.99 USD
    $ 24.99 USD
    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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    Victor Reinz - Corporate Logo
    T#:586742
    Part#: 23128677736
    Back Ordered
    $ 3.99 USD
    Free Shipping on orders $49 and up
    Fits the following transmissions: GS6-17BG/DG GS6-53BZ/DZ GS6X53DZ Getrag 242 Getrag 235 Getrag 240 Getrag 245/10/11 Getrag 260/5/50 Getrag 265/5 ​Getrag 265/6 ZF S5-16 S5D 250G S5D 260Z GS5-39DZ
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    Pentosin - Corporate Logo
    T#:46134786
    Part#: 1058211
    Ships on Aug 18, 2026
    $ 139.99 USD
    Free Shipping on orders $49 and up
    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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