Earl's Performance Vented Oil Fill Cap with PCV Vent

Earl's Performance Vented Oil Fill Caps provide a clean, reversible solution for integrating a catch tank or PCV system into your engine's crankcase ventilation. Designed to thread directly into the valve cover's oil fill opening just like a factory cap, these billet aluminum caps require no drilling, welding, or permanent valve cover modification — making them equally at home on street builds, track day cars, and dedicated race machines.

Key Features:

• Drop-in, tool-free installation — installs directly into the OEM oil fill opening with no valve cover modification, keeping the swap fully reversible
• Integrated internal baffle — separates oil from crankcase vapors before they enter the catch tank or PCV system, reducing oil carryover and maintaining a cleaner ventilation circuit
• ORB port connection — straight-thread O-ring boss port accepts AN O-ring fittings, port-style hose ends, and straight or 90-degree O-ring port to AN flare adapters for flexible routing in any engine bay
• Precision billet aluminum construction — CNC-machined for an accurate fit and long-term durability in high-demand racing environments
• Anodized finish — delivers corrosion resistance and a professional under-hood appearance
• Race-sanctioning body compliant — meets the catch tank requirements of most racing organizations
• Multiple fitment options — available in a range of versions to suit a wide variety of valve cover applications

Earl's has been a trusted name in racing fluid systems for decades, and these vented oil fill caps reflect that heritage. Whether you're building a compliant catch tank setup for a sanctioned race series or simply upgrading your street engine's crankcase ventilation, Earl's Vented Oil Fill Caps deliver a practical, bolt-on solution that protects your engine and keeps your build looking clean.