BMW S54 caps for girdle
Something for the high power BMW S54 racers and engine builders. The bottom end of the S54 block reportedly starts to fail under high power.
This cap is made of high strength tool steel, with the height modified to sit flush with the bottom surface of the block, for very easy and strong girdle fitment! It's never been easier to strengthen up the bottom end of your S54 engine!
These caps are slightly different than those for the M50b25 and M20b25, and are not directly compatible.
As with all cap changes (or service), your block will need to have the main bearing surface precision machined after fitting these. These caps are also compatible with many other BMW engines as they often share the same cap dimensions.
Complete set of seven caps.