These late model valve cover fill caps screw into the valve cover like an ordinary cap. These caps feature a baffle & -10 ORB (7/8"-14 Straight Thread O-Ring Style Port) for use w/ AN O-Ring Fitting (or Port hose end) & AN hose to the catch tank or PCV. These caps eliminate the need to modify your valve covers when adding a catch tank to your racing engine (required by most sanctioning bodies in racing applications). Choose from two versions w/ one that fits factory valve covers (GM LS, GM Gen-V LT, & Ford Coyote), and the second version that fits Holley Cast Aluminum GM LS Valve Covers. Billet aluminum construction w/ black anodized finish. Use w/ ORB (O-Ring Port) hose end AT849010ERL, or O-ring Port to AN Flare Adapter AT985010ERL (straight), or AT949010ERL (90 Degree) & AN hose to the Catch Tank.

• Easy Way to Add Catch Tank to Racing Engine w/o Modifying the Valve Cover
• Screws Into Valve Cover Like an Oil Fill Cap
• -10 ORB (7/8"-14 Straight Thread) O-Ring Boss Port for Use w/ AN Hose to Catch Tank or PCV
• Use w/ O-Ring Port Hose End AT849010ERL, or O-Ring Adapter AT985010ERL (straight) or At949010ERL (90 degree)
• Internal Baffle Inside Cap - Helps to Reduce Transfer of Oil to Catch Tank
• Billet Aluminum Construction w/ Black Anodized Finish
• Fits Holley Cast Aluminum LS Valve Covers