Polaris 5137206 Hydraulic Valve Lifter

This hydraulic valve lifter is an OEM engineered component designed for Polaris 800cc EFI twin-cylinder engines. It maintains zero valve clearance automatically via engine oil pressure, ensuring quiet operation and precise valve timing across the RPM range. The unit supersedes previous part numbers 5131415 and 5134152, incorporating updated metallurgy for improved durability. Constructed from case-hardened alloy steel with precision ground contact surfaces to withstand high spring pressures and off-road thermal cycles. Each engine requires four lifters. Designed as a direct drop-in replacement for Polaris RZR, Ranger, and Sportsman 800 platforms.