KAWASAKI K3V 280DT PUMP SEAL KIT

The Kawasaki K3V280DT Pump Seal Kit is a genuine sealing set built for the rebuild and overhaul of Kawasaki’s K3V280DT main hydraulic pump, one of the largest units in the K3V variable displacement axial piston pump lineup. It includes the shaft seals, O-rings, and gaskets needed to properly reseal the pump housing, rotary group, and regulator assembly during a rebuild, restoring the pump’s sealing performance without the cost of sourcing a full replacement unit.

The K3V280DT is a tandem-type, open-circuit swashplate pump with a displacement of 280 cm³/rev per pump section, rated for continuous pressures up to 34.3 MPa (roughly 350 bar). It’s the main hydraulic pump found in large-frame excavators from Kawasaki-equipped OEMs, where it supplies the flow needed for boom, arm, bucket, and travel functions simultaneously. On a pump handling this much displacement and pressure, seal condition has a direct effect on volumetric efficiency — a worn shaft seal or degraded O-ring can quietly reduce output flow, cause case-drain oil loss, or let contamination reach the rotary group long before the pump shows an obvious fault.

Rebuilding with a genuine Kawasaki seal kit rather than a mismatched generic set keeps every seal matched to the exact material and dimensional tolerances the K3V280DT was engineered around. This matters more on large-frame main pumps than almost anywhere else in the hydraulic system, since these pumps are expensive to replace outright and a proper reseal is far more cost-effective than a full unit swap. Servicing with the correct kit helps restore efficiency, prevent leaks, and extend the working life of the pump.

Technical Features

• Genuine Kawasaki-spec seal kit
• Designed for the K3V280DT pump rebuild and reseal
• Compatible with K3V280DT tandem open-circuit axial piston pump (280 cm³/rev, up to 34.3 MPa / ~350 bar)
• Restores sealing integrity across housing, rotary group, and regulator assembly
• Helps prevent case-drain leakage and contamination ingress
• Supports consistent volumetric efficiency on large-frame excavator main pumps
• Suited to large construction and mining excavator hydraulic systems

Compatible Pump Model

• Kawasaki K3V280DT (tandem open-circuit variable displacement axial piston pump)

Alternative Part Numbers

• Casappa 62046601 Seal Kit
• Caterpillar 7T-4515 Seal Kit
• Safim SG14706 Seal Kit

Shop & Supply stocks the Kawasaki K3V280DT Pump Seal Kit for immediate dispatch, as part of a broader lineup of genuine seal kits for Kawasaki and other major hydraulic pump brands. Choosing the original kit means the exact material grade and tolerances your K3V280DT pump was designed around — dependable sealing performance through every rebuild.