V TPO 32 1975 78 250 L6 ENGINE PART III WITH INTREGAL CYL HEAD MANIFOLD 1 COVER ASM Valve Rocker Arm 4 4 0 386 2 BOLT Hex 5 16 18 x 5 8 8 800 3 CAP Crankcase Oil Filler 1 758 4 REINFORCEMENT Valve Rocker Arm Cover Belt 0 413 5 STUD Valve Rocker Arm Cover 0 413 6 GASKET Valve Rocker Arm Cover 0 423 7 CLIP Spark Control Pipe 2 420 8 GROMMET Vent Hose Connector 1 745 8 KEY Valve Spring Cap 0 3I0 I0 CAP Valve Spring 0 309 1 1 SHIELD Valve Spring Oil 0 308 12 SPRING Valve with Damper 0 303 I3 BOLT Hex 3 8 16 x 4 I 4 8 800 14 TUBE Throttle Bore 3 680 I5 STUD Exhaust Manifold 3 613 16 BOLT Exhaust Manifold End 3 8 16 x 2 l 4 3 275 I7 BOLT Hex 7 l 6 14 x I 8 900 I8 WASHER Lock 7 I6 8 93I I9 LOCK Exhaust Manilold End Bolt 3 604 20 BRACKET Engine Lihing Rear N 21 WASHER Flat 15 64 x 3 4 x 1 31 8 929 22 HEAD ASM Cylinder 0 269 23 SWITCH Water Temperature 1 150 24 GASKET Exhaust Maniicld 3 270 25 MANIFOLD Exhaust 3 60I 26 BOLT Exhaust Manifold 3 8 1 6 x 2 I 4 3 275 27 THERMOSTAT Manilold Heat Control Valve 3 640 k 28 NUT Hex 5 16 24 8 9I 5 29 WASHER Lock 5 16 8 931 30 STUD Exhaust Manifold Heat Valve 3 680 31 VALVE Exhaust 0 297 32 VALVE Intake 0 296 33 GASKET Cylinder Head 0 289 34 SWITCH Oil Pressure 1 800 35 SWITCH Water Temperature 1 150 36 GASKET Thermostat Housing I 252 37 GASKET EGR Valve 3 670 38 VALVE EGR Emission 3 670 39 BOLT Hex 5 16 18 x 7 8 8 800 40 LOCK EGR Valve Bolt 3 680 41 BOLT Hex 3 8 16 x 1 8 800 42 HOUSING Thermostat 1 251 43 THERMOSTAT Coolant Temp 1 246 44 GASKET Coolant Outlet 1 154 45 OUTLET Coolant 1 153 46 SWITCH EGR Vacuum Valve Control 3 670 47 BRACKET Engine Lifting Front N S 48 BOLT Cylinder Head 1 2 13 x 3 37 64 0 293 49 BOLT Cylinder Head I 2 l3 x 4 3 8 0 293 50 PLUG Spark 2 270 51 ROD Valve Push 0 426 52 STUD Valve Push Rod Adiusting 0 429 53 ARM Valve Rocker 0 333 54 BALL Valve Adjusting 0 428 55 NUT Valve Adjusting 0 429 WAREl l0USING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CURPORATlUN LT TRUCK 5IA 2 83 me 0 000 GROUP