4Piston Racing | K24/K20 Vented Valve Cover

4Piston K24/K20 Vented Valve Cover
For over two decades, 4 Piston Racing has exclusively offered our 4P Logo Valve Covers only to customers purchasing complete engines. Now, for the first time ever, they are available to everyone in 4P signature red.
Take control of crankcase ventilation with our all-new 4 Piston Racing K24/K20 Vented Valve Cover, engineered for high-performance street and race applications.
Designed specifically for serious K-Series builds, this valve cover provides multiple -10 ORB ports for custom breather and catch can routing, while maintaining OEM gasket compatibility for a clean, reliable seal.
Whether you're running boost, high RPM, or building a dedicated race engine, proper crankcase ventilation is critical — and this cover is built to handle it.
🔧 Features
4x -10 ORB Ports (plugs included)
– 2 front-facing
– 2 rear-facing
Ideal for custom catch can setups and high-flow crankcase ventilation systems.
1x -8 ORB Port in Stock Location
Maintains factory-style breather positioning for flexible plumbing options.
Included -8 ORB to 5/8" Barb Fitting
Allows direct connection to OEM breather hose if desired.
Full Custom Internal Baffle System
Covers all breather ports to reduce oil carryover and improve oil control under high load and high RPM conditions.
OEM or 4PR Valve Cover Gasket Compatible
Works with our gasket or factory Honda gasket for easy installation and dependable sealing.
💨 Built for Boost & High RPM
High horsepower K24/K20 engines generate significant crankcase pressure. This vented valve cover allows proper evacuation through multiple high-flow outlets, helping:
Reduce crankcase pressure
Minimize oil blow-by
Improve ring seal stability
Support high-boost turbo applications
Enhance overall engine reliability
⚠️ Fitment Note
Fits K24/K20 engine platforms
Does NOT fit K24Z-series style cylinder heads