Jet Pump Wear Ring 155mm for Yamaha GP 1200 1997-1999

Jet Pump Wear Ring for Yamaha GP 1200

This 155mm jet pump wear ring is a replacement component that restores the correct impeller-to-housing clearance on Yamaha GP 1200 personal watercraft, helping the pump deliver consistent thrust and resist cavitation.

Overview

This jet pump wear ring is a direct-fit replacement for the worn ring in the 155mm pump on Yamaha GP 1200 models from 1997 to 1999. The ring lines the pump housing and holds the clearance between the impeller tips and the housing wall within spec so water is pushed rather than slipping past. It suits riders and shops servicing a pump that has lost bite or is being rebuilt after impeller damage.

Built For Performance

• 155mm diameter matched to the stock pump housing bore
• Reestablishes impeller-to-housing clearance to cut cavitation
• Helps bring back acceleration and top-end speed lost to wear
• Direct replacement in the factory wear ring position
• Built to withstand continuous water exposure and pump loads

Fits These Machines

• for Yamaha GP 1200, 1997
• for Yamaha GP 1200, 1998
• for Yamaha GP 1200, 1999

On-The-Job Use

• Pump rebuilds after impeller damage or debris ingestion
• Seasonal maintenance wear ring replacement
• Performance recovery on high-hour GP 1200 pumps
• Pump housing service once clearance exceeds spec

Specs At A Glance

Good To Know

Q: How do I know my wear ring needs replacing? A: Watch for cavitation on acceleration, reduced top speed, and visible scoring or a widened impeller tip gap. Checking the clearance against spec confirms whether replacement is needed.

Q: Can I install this ring without removing the pump? A: No, the pump generally must be removed so the old ring can be pressed out and the new one seated correctly. Refer to your service manual for the proper steps.

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