99999-04523-00 Jet Pump Housing for Yamaha GP 1800 2017-2018

Jet Pump Housing for Yamaha

This jet pump housing for Yamaha personal watercraft provides the durable outer structure that holds the impeller and wear ring assembly, and it carries the OEM cross-reference 99999-04523-00.

Overview

This jet pump housing for Yamaha is a replacement housing designed to contain the jet pump internals on compatible GP 1800 watercraft. The jet pump housing for Yamaha keeps the impeller, wear ring, and related components properly aligned so thrust moves water efficiently. It suits riders replacing a cracked or worn housing on a 2017 to 2018 machine.

Built For Performance

• OEM cross-reference 99999-04523-00 for straightforward part matching
• Rugged cast construction built to withstand continuous water flow
• Precision interior bore supports correct impeller and wear ring alignment
• Sealing surfaces shaped to seat gaskets and seals cleanly
• Designed for the high-load demands of jet propulsion

Fits These Machines

• for Yamaha GP 1800, 2017-2018

On-The-Job Use

• Replacing a cracked or corroded pump housing after impact damage
• Rebuilding a jet pump during routine driveline service
• Restoring proper thrust and handling on the water
• Routine maintenance on higher-hour GP 1800 units

Specs At A Glance

Good To Know

Q: Does this housing come with the impeller and wear ring? A: This listing covers the jet pump housing only. Reuse or replace the internal pump components separately as needed.

Q: How do I confirm this housing fits my machine? A: Match the OEM cross-reference number 99999-04523-00 against your existing housing or parts diagram 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.