Moroso 25025 Lifter Valley Vents 0.25 NPT Aluminum 8-Piece Kit

Moroso Lifter Valley Vents are engineered to improve engine performance by providing positive ventilation to the upper engine and reducing crankcase pressure. These aluminum vents install in the lifter valley area and help eliminate excessive windage that can rob horsepower from your engine.

Key Features:

• 0.25-inch NPT threads with hex head design for easy installation
• Provides positive ventilation to upper engine compartment
• Helps stop excessive windage and horsepower loss
• Prevents oil drainback to the crankshaft
• Durable all-aluminum construction

These vents are ideal for high-performance and racing applications where controlling crankcase pressure and windage is critical for maximizing engine efficiency. The hex head design allows for secure installation using standard tools, while the NPT threads ensure a reliable seal.