Water Pump Rebuild Kit for Polaris RZR 4 900 2016-2018

Water Pump Rebuild Kit for Polaris RZR 4 900

This water pump rebuild kit supplies the seals, bearing, and gaskets needed to refresh the coolant pump on a 2016-2018 Polaris RZR 4 900, curing leaks and worn bearing noise.

Overview

This water pump rebuild kit is built for the 2016-2018 Polaris RZR 4 900 and covers the internal wear parts that degrade with heat and use. A fresh water pump rebuild kit restores coolant flow so the engine stays at operating temperature on long rides. It suits RZR 4 900 owners and shops performing scheduled or repair pump service.

Built For Performance

• Shaft seal set to stop coolant loss at the weep hole
• Replacement bearing matched to the factory pump shaft
• Gaskets and O-rings for a tight seal on reassembly
• Parts sized to the 2016-2018 RZR 4 900 pump housing
• Direct-fit rebuild components that replace the original wear items

Fits These Machines

• for Polaris RZR 4 900 (2016-2018)
• for Polaris RZR 4 900 models using the same coolant pump assembly

On-The-Job Use

• Repairing a pump that drips coolant during storage
• Rebuilding ahead of a riding season
• Fixing bearing growl or whine from the pump
• Routine coolant system upkeep on the RZR 4 900

Specs At A Glance

Good To Know

Q: Do I need to drain the cooling system before rebuilding the pump? A: Yes, drain the coolant first so the pump housing can be opened cleanly, then refill with the specified coolant.

Q: Can I reuse the old gaskets and seals? A: No, the kit includes new seals, gaskets, and O-rings because reused items often leak after reassembly.

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