BGA OS5309 Crankshaft Seal

Compatible with BMW 3 (E21) , BMW 3 (E30) , BMW 3 Touring (E30) Show more info
High-quality crankshaft seal designed to prevent oil leaks and maintain engine lubrication.
3.42 EUR
inc. VAT 21%
In stock 1
Delivery 1 day (13.05.2026)
PN OS5309
Make BGA
EAN 5038205210646

The BGA OS5309 crankshaft seal is engineered to provide a reliable barrier against oil leakage from the crankshaft. Proper sealing is crucial for maintaining optimal engine performance and preventing damage caused by low oil levels. This component plays a vital role in the engine's lubrication system. By effectively sealing the crankshaft, it ensures that lubricating oil remains within the engine, protecting vital moving parts from friction and wear. A failing seal can lead to significant oil loss, potentially causing catastrophic engine failure if not addressed promptly. Crafted with durable materials, the OS5309 is built to withstand the demanding conditions within the engine bay, including high temperatures and constant rotation. Its precise design ensures a perfect fit and function, making it a dependable choice for replacement or repair. Ensure your engine's longevity and efficiency by installing the BGA OS5309 crankshaft seal. It is designed for straightforward installation, allowing for a quick and effective repair to restore your engine's integrity.

  • Prevents oil leaks from the crankshaft.
  • Ensures proper engine lubrication.
  • Protects vital engine components from wear.
  • Constructed with durable, high-temperature resistant materials.
  • Designed for a precise fit and reliable performance.
  • Helps maintain engine efficiency and longevity.
  • Essential for preventing engine damage due to oil loss.
  • Direct replacement for OE specifications.
Installation side
On the gearbox side
Height [mm]
7
Outer diameter [mm]
50]
Inner diameter [mm]
3/8"
Material
NBR (Nitrile Butadiene Rubber)
  • BMW
    • 3 (E21)
      • 320/6 (90kW/122PS)
    • 3 (E30)
      • 320 i (95kW/129PS)
      • 320 i (92kW/125PS)
      • 325 i X (125kW/170PS)
      • 325 i (125kW/170PS)
      • 325 i X (126kW/171PS)
      • 325 e 2.7 (90kW/122PS)
      • 324 d (63kW/86PS)
      • 316 i (75kW/102PS)
    • 3 Touring (E30)
      • 320 i (95kW/129PS)
      • 316 i (73kW/100PS)
    • 3 (E36)
      • 316 i (73kW/100PS)
      • 316 i (75kW/102PS)
    • 5 (E28)
      • 520 i (95kW/129PS)
      • 525 e (90kW/122PS)
    • 3 Kabriolets (E30)
      • 320 i (95kW/129PS)
      • 325 i (125kW/170PS)
    • 5 (E34)
      • 518 i (85kW/115PS)
    • 5 Touring (E34)
      • 518 i (83kW/113PS)
  • TOYOTA
    • STARLET (_P7_)
      • 1.5 D (NP70L, NP70R) (40kW/54PS)
    • STARLET (_P8_)
      • 1.5 D (NP80_, NP80) (40kW/54PS)
  • PIAGGIO
    • PORTER Furgons
      • 1.3 16V (48kW/65PS)
      • 1.3 16V 4x4 (48kW/65PS)
      • 1.3 LPG (48kW/64PS)
    • PORTER Platforma/Šasija
      • 1.3 16V (48kW/65PS)
      • 1.3 16V 4x4 (48kW/65PS)
      • 1.3 LPG (48kW/64PS)
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