99999-04523-00 Jet Pump Housing for Yamaha SX 195 1800 2017-2018

Jet Pump Housing for Yamaha

This jet pump housing is a replacement component that directs water flow through the pump assembly on Yamaha 1800 series personal watercraft, cross-referenced to OEM part 99999-04523-00.

Overview

This jet pump housing serves as the outer structure that channels water through the impeller on Yamaha 1800 jet drive systems. Built as a direct replacement, it helps restore proper thrust and cooling flow when the original housing is cracked, worn, or corroded. It is intended for riders and mechanics servicing 2017 to 2018 Yamaha SX 195 and 1800 series watercraft.

Built For Performance

• Precision-formed to match the OEM 99999-04523-00 mounting footprint
• Rugged cast construction built to handle continuous water exposure
• Internal passage geometry shaped to support consistent impeller flow
• Corrosion-resistant surface treatment for marine environments
• Sealing surfaces machined for a tight fit against pump components

Fits These Machines

• for Yamaha SX 195, 2017
• for Yamaha SX 195, 2018
• for Yamaha 1800 series, 2017
• for Yamaha 1800 series, 2018

On-The-Job Use

• Replacing a cracked or corroded pump housing during driveline service
• Rebuilding the jet pump assembly after impeller or wear ring damage
• Restoring water flow and thrust on a watercraft with a compromised housing
• Routine maintenance on 1800 series Yamaha jet drive systems

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: No, this is an aftermarket replacement cross-referenced to OEM part 99999-04523-00 for fitment purposes. Always confirm part number and model compatibility before ordering.

Q: What else should be inspected when replacing the housing? A: Check the impeller, wear ring, and seals for wear while the pump is apart. Replacing worn components at the same time helps avoid a second teardown.

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