Parts list: № Number Qty Name Options 1 R72328 1 O-Ring 18.720 X 2.616 mm (0.737" X 0.103") 2 R120467 1 Elbow Fitting 90° 3 R134403 1 Hose Next page: ST720859 Timing Gear Cover, Water Pump, Lower Idle Gear ST720993 Valve Cover (Conversion Parts) ST720881 Rocker Arm / Shaft / Tappet / Push Rod ST720976 Valve Cover ST720891 Front Plate And Upper Idle Gear