547091 Plunger – M14 x 25.5, Fits Cat Pumps 3SP & 3DNX Series

Part Number: 547091
Category: Pressure Washer → Pump Replacement Parts
Type: Ceramic Plunger – M14 x 25.5, Fits CAT Pumps 3SP & 3DNX Series

The 547091 Ceramic Plunger is a genuine CAT Pumps replacement component designed for multiple compact CAT high-pressure pump platforms, including the 3SPX, 3DNX, 4DNX, and 4PPX series. Measuring 14mm x 25.5mm, this precision ceramic plunger restores smooth piston movement, proper sealing, and consistent pressure output in demanding pressure washer applications.

Compatibility

• CAT Pumps 3SPX Series

• CAT Pumps 3DNX Series

• CAT Pumps 4DNX Series

• CAT Pumps 4PPX Series

Specifications

• Part Type: Ceramic Plunger

• Thread Size: M14

• Length: 25.5 mm

• Material: Ceramic

• Quantity Required: 3 plungers per pump

Key Features

• Genuine CAT Pumps OEM replacement part

• Precision ceramic construction for superior wear resistance

• Restores smooth piston motion and consistent pressure

• Exact OEM fit—no modifications required

• Designed for compact CAT pump platforms

• Ideal for maintenance, rebuilds, and repairs

• Helps extend pump service life and reliability