BMW Gaskets, Gasket Sets, Seals, & O-Rings for BMW 3 Series E46 (1999-2005)

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Gaskets are key to a properly running and clean engine. They obviously prevent fluid leaks but they're also critical in keeping air either in or out... Air leaks after the air flow meter, also known as vaccum leaks, can induce lean running conditions, fault codes, and poor running conditions. Other seals and gaskets are designed to keep air in. With the sensitivity of OBD systems, leaks will lead to fault codes very quickly which can be tough to diagnose and prevent you from passing state inspections.

We insist on Original BMW or OEM gaskets whenever possible.

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Rein - Corporate Logo
T#:370783
Part#: 11131437237
In Stock
$ 28.99 USD
Free Shipping on orders $49 and up
Metal / Rubber gasket
Rein - Corporate Logo
T#:361056
Part#: 11142249533
In Stock at Vendor
$ 22.99 USD
Free Shipping on orders $49 and up
Rein Rear Crankshaft Seal for many BMW models is an OE-equivalent replacement for the rear main oil seal. When the seal fails, oil drips onto the driveway and can reach the clutch surface. Replacing it during a clutch job is the practical time to do it, since the transmission is already out.
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Rein - Corporate Logo
T#:379717
Part#: 11121735533
In Stock
$ 9.67 USD
Free Shipping on orders $49 and up
12.7mm (+0.2mm)

Rein - Corporate Logo
T#:15159
Part#: 17222245358
In Stock
$ 4.99 USD
Free Shipping on orders $49 and up
This is the sealing o-ring used for many oil cooler kits on various BMW models. They're also a prime source for oil leaks because the o-ring gets 'flat' or shrinks or becomes damaged. These are usually easy to change though which puts an end to annoying small oil leaks.
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BMW S54 3.2L O-Ring - Priced Each
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:28570864
Part#: 13417830384
In Stock
Sale - Save 40% $ 2.99

This product was last offered at the strikethrough price on
11-07-2026

$ 1.79 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 2.99

This product was last offered at the strikethrough price on
11-07-2026

$ 1.79 USD
Free Shipping on orders $49 and up

Ensure optimal engine performance with the BMW S54 3.2L O-Ring.

Specifically designed for BMW engines, this o-ring provides a reliable seal to prevent leaks and maintain engine integrity. Crafted with high-quality materials, it withstands high temperatures and pressures, ensuring long-lasting durability. With easy installation and precise fitment, this o-ring is essential for any BMW owner looking to maintain their engine's performance and reliability.

  • Provides a reliable seal to prevent leaks
  • Withstands high temperatures and pressures
  • Ensures long-lasting durability
  • Easy installation for convenience
  • Precise fitment for BMW engines
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1.5mm X 51mm Metric Buna-N 70 O-ring
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:388889
Part#: N1.50X051
In Stock
Sale - Save 35% $ 5.99

This product was last offered at the strikethrough price on
11-07-2026

$ 3.89 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 5.99

This product was last offered at the strikethrough price on
11-07-2026

$ 3.89 USD
Free Shipping on orders $49 and up

1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

  • High-quality Buna-N material
  • Reliable sealing performance
  • Metric sizing for versatility
  • 70 durometer hardness for durability
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Rein Intake Valve - E36, E39, E46
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379707
Part#: 11341739822
Back Ordered
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
Replacement intake valve
O-Ring - Priced Each
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:554449
Part#: 11361403325
In Stock
Sale - Save 40% $ 2.99

This product was last offered at the strikethrough price on
11-07-2026

$ 1.79 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 2.99

This product was last offered at the strikethrough price on
11-07-2026

$ 1.79 USD
Free Shipping on orders $49 and up