BLAKO Polaris 600/700/800 Oil Pressure Relief Valve

The oil pressure relief valve is a critical engine component engineered to maintain stable oil pressure in Polaris 600, 700, and 800 series engines by regulating excess pressure and ensuring consistent lubricant flow throughout the engine. When oil pressure rises too high — such as during cold starts or hard riding — the valve opens to divert excess oil back to the sump, preventing damage to seals, gaskets, and other internal components. Proper oil pressure regulation contributes to longer engine life, smoother operation, and reduced wear.

This high-quality replacement valve is built to meet or exceed OEM performance standards and serves as a reliable upgrade or service replacement for worn, stuck, or leaking original relief valves. Ideal for utility and recreational ATVs and UTVs with 600-800cc engines, this valve helps protect your engine’s bottom end while maintaining optimal pressure balance under varied riding conditions.

Fitment

UTVs

• Polaris Ranger 700 (2005-2009)

• Polaris Ranger 800 / Ranger 800 EFI (2010-2017)

• Polaris Ranger Crew 700 / Crew 800

• Polaris Ranger HD 700 / HD 800

• Polaris Ranger XP 700 / XP 800

Side-by-Side / Sport

• Polaris RZR 800 / RZR 4 800 (2008-2014)

• Polaris RZR S 800 (2009-2014)

ATVs

• Polaris Sportsman 700 (2002-2010)

• Polaris Sportsman 800 (2005-2014)

• Polaris Sportsman X2 700 / X2 800