Earl's Oil Fill Cap - 10 AN Female O-Ring Vent - Twist-On - Black RS004C18 FITS BETWEEN UPPER AND LOWER

FITS BETWEEN UPPER AND LOWER INTAKE MANIFOLD ON ALL BBK SSI FORD SB INTAKE MANIFOLDSWhy follow when you can lead

2018 Chevrolet Silverado 3500 HD 4WD

easily replaceable plunger and contacts

dial indicator mount

P/N 6993 and O' Ring

Earl's Oil Fill Cap - 10 AN Female O-Ring Vent - Twist-On - Black RS004C18 FITS BETWEEN UPPER AND LOWERThese 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