Buy OEM 1988 General Motors Part # 12665110 (12677576). ENGINE. Canyon, Colorado; 4WD. CAMSHAFT and TIMING. CRANKSHAFT and BEARINGS. CYLINDER HEAD and VALVES. LUBRICATION. MOUNTS. PISTONS

BALANCE SHAFTS. OIL PAN. OIL PUMP. VARIABLE VALVE TIMING. Canyon. Colorado; 4WD. Colorado; All. Colorado; Exhaust. Colorado; Intake. Colorado; Left. Colorado; Lower; Left (Chain Guide). Colorado; Lower; Right (Tensioner Arm). Colorado; Right. Colorado; RWD; Auto Trans. Colorado; RWD; Manual Trans. Colorado; Type 1. Colorado; Type 2. Colorado; Upper.