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FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
3 Series Parts

Belt tensioner

BMW Part Number:64 55 7 787 371
64557787371short number 7787371
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Fits E46 — 318d, 318td, 320Cd, 320d, 320td
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Belt tensioner – BMW diagram03 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW belt tensioner, part number 64 55 7 787 371. The number stamped on the part is 64557787371; BMW's catalog files it under the short number 7787371. You will find it on our AC & Climate Control shelf, under Condenser, air conditioning.

It fits the E46 sedan, coupe, touring and compact (318d, 318td, 320d and 320td, 2001–2004), with the M47N engine.

BMW draws it on 3 diagrams, among them Belt Drive Climate Compressor (11_3575) and Repair kit, belt drives, Value Line (11_5178). It weighs about 573 g (1.3 lb).

We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.

Details

BMW Part Number64 55 7 787 371
Also written as645577873717787371
QualityGenuine BMW · OEM
CompactM47NAllAT91

Every used part is inspected and graded before listing. Condition grades:

  • Good — minimal wear, fully functional.
  • Fair — normal wear, fully functional.
  • Acceptable — visible wear, still functional.

Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.

Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.