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ACL - BMW M20/M50/M52/M54/S50/S54 Main Bearing Set (7M1532H)

ACL - BMW M20/M50/M52/M54/S50/S54 Main Bearing Set (7M1532H)


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Regular price $368.28 USD
Regular price Sale price $368.28 USD
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ACL Race Series performance engine bearings are manufactured
to exacting tolerances. Micron tolerance machining supported by precision measurement systems delivers consistent accuracy to key characteristics like wall thickness and crush. This ensures reliable fit and helps maintain consistent clearances. 

A blend of characteristics to provide high strength and excellent seizure resistance.

No flash plating is applied to further improve bearing retention and maximise heat transfer.

ACL Race Series performance engine bearings sets are identified by the ‘H’ after the set number e.g. 8B663H-STD.

Most ACL RACE Series performance engine bearings are also produced in a ’HX’ version e.g. 8B663HX-STD. The ‘X’ signifies the set will give an extra .001” (0.025mm) oil clearance on a standard size shaft when compared to the H-STD set. The wall size of these HX-STD bearings is .0005” (0.013mm) thinner than the H-STD bearings, in all other respects the HX set is identical to the H-STD set.

There are selected con rod bearing sets that are manufactured with a dowel hole in the lower shell to suit a dowel location in the con rod cap. These are designated with a ‘D’ in the set numbering e.g. 8B663HD-STD or 8B663HXD-STD etc.



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