We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the head gaskets. We always recommend replacing all head gaskets at the same time, as the other gaskets will have been compromised once the head is...

This aftercooler will also fit the B4900 pump.

Brg. Insert for connecting rod. Qty. 2 Inserts for 1 Rod.  If you need to replace Inserts for both rods, then order qty. 4.

Old Part Numbers: 6222727900Hi pressure piston only. (order wrist pin and retainers below if needed)

Old Part Numbers: 2901323156, B4900AOVHLKITAir Compressor Pump Rebuild Kit for B4900A pump, includes complete gasket kit, ring set (for LP and HP pistons), oil seal, and conrod insert bearings. Note: Does not include the valve plate assembly or the air...