Replacement Bac-Cup Piston

Replacement piston for CAT Pumps 331 and 333 pumps with Bac-cup assemblies, used with standard cylinders for applications with intermittent high-pressure requirements. OEM replacement part, guaranteed to fit. Use for pump repair or maintenance. Exact replacement part, don't have to worry about tweaks or adjustments.

• OEM parts guarantee use of correct materials for increased longevity and come with manufacturer support
• 18mm piston
• Use only with 331 and 333 pumps - piston is unique to Bac-cup assembly requirements
• Check with pump manual to ensure correct part number