Jet Pump Housing for Yamaha GP 800 2001-2002 Models

Jet Pump Housing for Yamaha

This jet pump housing is a replacement component that channels water through the pump assembly on Yamaha personal watercraft, giving the impeller a durable, correctly shaped tunnel to work inside.

Overview

This jet pump housing serves as the outer structure of the pump assembly on Yamaha watercraft, guiding water flow from the intake to the impeller and out through the nozzle. It is made for riders and mechanics replacing a cracked, corroded, or worn housing that no longer holds proper clearances in the pump tunnel. The jet pump housing restores the sealed path the pump needs to generate thrust.

Built For Performance

• Cast body shaped to match the pump tunnel profile of the GP 800 platform
• Direct-fit replacement for the original housing on 2001-2002 Yamaha GP 800 models
• Machined bore surfaces that keep impeller clearance within spec
• Accepts stock wear ring, impeller, and nozzle components
• Corrosion-resistant construction suited to regular water exposure

Fits These Machines

• for Yamaha GP 800, 2001
• for Yamaha GP 800, 2002

On-The-Job Use

• Replacing a housing damaged by rocks, debris, or dry-run heat
• Rebuilding a pump assembly during seasonal maintenance
• Restoring lost top-end speed caused by a distorted pump tunnel
• Servicing rental or high-hour GP 800 watercraft

Specs At A Glance

Good To Know

Q: Do I need to replace the wear ring at the same time? A: It is worth inspecting the wear ring while the housing is off, since a scored or out-of-spec ring will undo the benefit of a fresh housing. If it shows grooves or deep scoring, replace it during reassembly.

Q: Will this fit other Yamaha models? A: This housing is listed for the GP 800 for the 2001 through 2002 model years, and pump castings can differ between platforms. Confirm your hull and pump part numbers before ordering.

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