Uncontrolled crankcase pressure robs power and pushes oil past rings and seals under load.

Moroso 25900 Crankcase Evacuation System Features:

• Reduces crankcase pressure throughout entire rpm range for increased piston ring seal, reduced intake charge contamination, and fewer oil leaks.
• Track and dyno tests prove increases in engine performance.
• Includes 2 each: Oil Separators/Breathers, Breather/Filler Cap Grommets, One-Way Check Valve and Weld-In Nipple for header collector, use with 5/8" dia. hose Cannot be used on cars with mufflers.
• Quantity: Sold Individually.