6R8-51312-03-94 Jet Pump Housing for Yamaha GP 800 1998-2000

Jet Pump Housing for Yamaha

This jet pump housing for Yamaha watercraft, OEM cross-reference 6R8-51312-03-94, houses the impeller and internal pump components so water is drawn and pushed with controlled pressure.

Overview

This jet pump housing for Yamaha is the housing that encases the impeller and wear ring assembly on personal watercraft. It channels water through the pump for steady thrust and reliable hookup. Built for riders replacing a cracked or worn jet pump housing on their PWC.

Built For Performance

• Cast housing shaped to match the factory pump bore
• Accepts OEM-spec impeller and wear ring components
• Sealing surfaces machined for a clean fit against the pump shoe
• Corrosion-resistant finish suited to regular water exposure
• Direct replacement for the 6R8-51312-03-94 jet pump housing

Fits These Machines

• for Yamaha GP 800 1998-2000

On-The-Job Use

• Replacing a cracked or corroded factory pump housing
• Rebuilding the jet pump on a GP 800 during off-season service
• Restoring lost thrust caused by a damaged housing bore

Specs At A Glance

Good To Know

Q: Does this housing come with the impeller installed? A: No, this listing is for the jet pump housing only, so you will need to transfer or replace the impeller and wear ring separately.

Q: How do I know if I need a new pump housing? A: Look for cracks, deep scoring inside the bore, or corrosion around the sealing edges that would let water bypass the impeller.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.