Roller Rocker Arm Set, 1.6:1 Ratio
• Set of 16, 3/8" stud 1.6:1 ratio roller rockers
• Use P/N 19210725 for single service part
NOTE: When using a high-lift camshaft, check valve spring coil bind, retainer-to-seal clearance and piston-to-valve clearance. Check for adequate pushrod clearance when using on cast-iron heads. It may be necessary to remove valve cover drippers for proper rocker arm clearance.
NOTE: P/N 19210729 cannot be used on ZZ3 engines with orange valve springs.