Redhorse Performance 4153 Series 0 psi crankcase check valves use a PTFE ball to seal and prevent backflow of fluids. These aluminum fittings have AN male inlet/outlet threads, are E85 flex fuel and methanol compatible, and can be used for many other vehicle applications where a check valve is needed.

Redhorse Performance 4153-06-06-2 Crankcase Breather Hose Check Valve Features:

• Notes: -6 AN male inlet/outlet, black anodized.
• Welding Required: No
• Sold Individually