COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) Water Pump Pulley Adjustable by-pass pressure using installed

Adjustable by-pass pressure using installed higher pressure relief spring (+20 psi M452 and +10 psi M462) or optional lower pressure relief spring

Mercedes Sprinter Van 2007-Current

Holley 4150 / 4160

1976-1986 Mercury Capri

Available in plastic and aluminum

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) Water Pump Pulley Adjustable by-pass pressure using installedThe next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle