Earl's Oil Fill Cap w/ PCV Vent Adapters - NPT The S-Type II systems use

The S-Type II systems use an advanced muffler design to eliminate sound frequencies are often associated with resonance or drone

these 10 degree retainers are designed specifically 1

The UTCA064's heavy-duty construction and solid Delrin bushings give you much improved repeatability on the street

Complete your engine dress-up look with a breather cap that actually matches your look

Earl's Oil Fill Cap w/ PCV Vent Adapters - NPT The S-Type II systems useThese 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