Photo shown for illustration; shade and shape may differ slightly.
ACL Main Bearing Set for BMW M20B20/B25/B27, M50B20, M50B25, M50B27, M52B20, M52B25, M52B28, M54B25, Size STD HX
Warehouse stock
ACL Race Series main bearing set for the BMW M20B20/B25/B27, M50B20, M50B25, M50B27, M52B20, M52B25, M52B28, M54B25 engine, size STD HX: for journals at the factory size, with 0.025 mm more oil clearance than the STD set.
Specifications
| Manufacturer | ACL |
| Series | Race Series |
| Type | Main bearings (crankshaft) |
| Engine | BMW M20B20/B25/B27, M50B20, M50B25, M50B27, M52B20, M52B25, M52B28, M54B25 |
| Size | STD HX |
| ACL part number | 7M1532HX-STD |
| Packaging | Set sealed by the manufacturer |
Engine fitment
- BMW M20B20/B25/B27, M50B20, M50B25, M50B27, M52B20, M52B25, M52B28, M54B25
- For the same engine: ACL rod bearings
What to check
- Choose the size from the journal measurement made by the shop that machined the crankshaft, not from the old set
- The set is sold sealed by the manufacturer: check the part number and the size before you open it
- HX is not an upgrade: the oil clearance is set by the journal and the bore, and the set only fills what is left