Replace those worn-out gaskets with new ones. The driver kit is an assortment of common parts that need to be replaced over time due to wear and tear. Driver kit fits P645 and P650. This kit contains cylinder cap o-ring, piston driver assembly, piston o-ring, mini o-ring, small exhaust o-ring.

• Replacement parts that fit Grex P645
• This kit contains Cylinder Cap O-Ring, Piston Driver Assembly, Piston O-Ring, Mini O-Ring and Small Exhaust O-Ring