Compatible with both gear or chain drive camshafts. A competitive priced upgrade to the stock oiling system. The Feuling OE+ billet oil pump and matched OE+ billet cam plate help increase oil pressure and return scavenge volumes. The OE+ billet cam plates have better rigidity and are machined to tighter tolerances than stock. The OE+ cam plate pressure relief valve and spring are seated and pre-set with a 50-60 psi pop off. OE+ oil pumps assemble without O-rings on the pump housings; similar to the OEM and SE oil pumps. Includes bearing retainer plate and hardware. Note: Gear drive cams require separate purchase of block-off plates see Feuling 566113.