Moroso 68866 Crankcase Evacuation System with Billet Aluminum Breathers

The Moroso 68866 crankcase evacuation system is designed to reduce crankcase pressure throughout the entire RPM range, resulting in improved engine performance and reliability. This system increases piston ring seal, reduces intake charge contamination, and minimizes oil leaks.

Complete Kit Includes:

• 2 billet aluminum push-in breathers
• 2 O-rings
• 2 billet adapters
• 2 grommets for fabricated aluminum valve covers
• 2 grommets for cast/stamped valve covers
• 2 one-way check valves
• 2 weld-in nipples for header collector installation

Installation Requirements:

• Requires 5/8-inch diameter hose (sold separately)
• Weld-in fittings attach to header collectors to create vacuum effect
• Works with both fabricated aluminum and cast/stamped valve covers

Important Notes:

• Not recommended for vehicles with mufflers or downstream wideband/oxygen sensors
• Designed for drag race and oval track applications
• Track and dyno-tested to produce significant increases in engine performance

This professional-grade evacuation system from Moroso helps optimize engine efficiency by utilizing exhaust velocity to pull harmful blow-by gases and pressure from the crankcase, allowing your engine to breathe more efficiently and maintain proper ring seal under high-RPM operation.