Mounting is from the rear of the main supercharger bracket to the oil filter housing (requires an extended oil filter housing bolt found in our Dinan bolt kit package)

Rebuilding a Vortech Supercharger can be a tedious process without the right tools

ULO (the OEM for BMW) have been discontinued from purchase worldwide

Please note: I can no longer purchase new aftermarket cases with gray buttons

Install tools for the DIY Vortech Supercharger rebuilder

OEM Die Wethje S54 / P54 "CSL" Airbox - NEW M3 Lightweight Mounting is from the rearNew never used OEM Die Wethje CSL Airbox Die Wethje is the OEM manufacturer for BMW and their CSL airbox. This airbox is a variant, by Die Wethje, for the S54 CSL setup. The exact purpose of this box is unknown. With the missing unfiltered portion it is a race style (similar to the Karbonius Race), but it lacks some of the details that the P54 airbox has. This box falls in the middle of the CSL and P54. This is for the main airbox portion only. No