This precision-engineered spacer allows you to adapt a clutched alternator pulley to your factory alternator, drastically extending the lifespan of your belt, tensioner, and harmonic balancer.
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Restore your BMW’s crankcase ventilation with this high‑quality Breather Valve Diaphragm Spring and Cap (11127803790).
10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
5394230
Mfg#:
11127803790
Ships on Feb 15, 2027
ON SALE!
SAVE 24%
$15.99
This product was last offered at the strikethrough price on 05-02-2026
Don't let a brittle, failing factory seal compromise your BMW's engine bay.
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Brand:
ES#:
3478296
Mfg#:
11427788455
In Stock at Vendor
ON SALE!
$14.23
This product was last offered at the strikethrough price on 08-14-2026
Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.
Lifetime Replacement
