BMW Gaskets, Gasket Sets, Seals, & O-Rings for BMW 5 Series E28 (1982-1988)

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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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1.5mm X 51mm Metric Buna-N 70 O-ring
1.5mm X 51mm Metric Buna-N 70 O-ring
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:388889
Part#: N1.50X051
In Stock
Sale - Save 25% $ 5.99

This product was last offered at the strikethrough price on
06-13-2026

$ 4.49 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 25%
$ 5.99

This product was last offered at the strikethrough price on
06-13-2026

$ 4.49 USD
Free Shipping on orders $49 and up
Add to Wish List

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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Cometic MLS Head Gasket - 85mm Bore - .040in - M20 2.5L/2.7L
Cometic MLS Head Gasket - 85mm Bore - .040in - M20 2.5L/2.7L ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Cometic - Corporate Logo
T#:26738376
Part#: C4394-040
Back Ordered
$ 229.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 229.99 USD
Free Shipping on orders $49 and up
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Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.
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Cometic MLS Head Gasket - 85mm Bore - .12in - M20 2.5L/2.7L
Cometic MLS Head Gasket - 85mm Bore - .12in - M20 2.5L/2.7L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Cometic - Corporate Logo
T#:26738369
Part#: C4394-120
Special Order: No Guaranteed ETA
$ 277.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 277.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.
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