Honda K24Z Oil Filter Housing Block-Off Plate KitInstallation Tips Overview When building the K24Z motors like the 9th Gen Civic Si and TSX to turn out big power and 8000+ rpms the factory oiling system becomes inefficient and problematic due to the balance shafts the OEM oil pump uses. The most common and cost effective solution to this is swapping in the Acura RSX Type S PRB oil pump to eliminate the balance shafts and better supply oil. This kit is required to block off the factory oil filter