TPO 34 I 1973 78 250 L6 ENGINE PART I I GEAR Camshaft 0 736 53 BOLT Hex 5 IB 18 x 7 B 8 900 2 BEARING Camshaft Thrust 0 533 54 BOLT Hex 5 16 18 x 1 I 2 8 900 3 KEY 3 18 x 3 4 8 960 55 PULLEY Water Pump Fan 1 062 4 BEARING Camshaft See 0 543 0 546 56 SPACER Engine Fan 1 064 8 0 549 0 539 57 NIPPLE By Pass Hose 8 666 5 CAMSIIAFT Engine 0 519 58 BEARING Part of Distributor Shaft N S 6 LIFTER Valve 0 459 59 SCREW Tap 1 4 20 x 7 16 8 977 7 BOLT Hex I 4 20 x 1 Z 8 006 60 BOLT Hex 7 16 Z0 x I3 16 6 900 8 SCREW Tap I 4 20 x I Z 8 077 61 WASHER Lock 7 1S Ext 8 932 9 FAN Engine 1 064 62 WASHER Balancer to Crank 0 662 10 ELEMENT Oil Filter 1 836 63 BALANCER Harmonic 0 650 11 CONNECTOR Oil Filter 1 855 64 KEY 3 16 x 3 4 8 960 12 PUMP Fuel 3 900 65 SEAL Engine Front Cover Oil 0 213 13 GASKET Fuel Pump 3 904 66 COVER Engine Front End 0 206 14 BOLT W Seal Valve Cover 5 16 IB 67 GASKET Front End Cover 0 207 x 7 16 0 446 66 GEAR Crankshaft 0 728 15 WIRE Spark Plug 2 240 69 KEY 3 16 x 3 4 6 960 I6 DISTRIBUTOR Ignition H E 2 361 70 BEARING Crankshaft See 0 099 17 GASKET Distributor 2 363 0 101 8 0 I03 0 096 16 BOLT Hex 3 8 16 x 1 8 900 71 BEARING Crenkshaft Rear 0 096 19 CLAMP Distributor 2 363 72 SEAL Crankshaft Rear Main Bearing 20 COVER Coil 2 183 Oil 0 137 2I GAUGE Oil Level Indicator 1 516 73 BOLT Hex Cover to Block 8 900 22 TUBE Oil Level Indicator Gauge 1 516 74 BEARING Clutch Release 0 799 23 BEARING Connecting Rod 0 6I6 75 COVER W Plate Clutch 0 659 24 PIN Piston 0 636 76 STUD Clutch Release Fork Ball 0 796 25 RING KIT Piston 0 643 77 SPRING Clutch Fork Retaining 0 796 26 PISTON Engine Incl 24 0 629 78 FLYWHEEL Engine A T 0 666 27 BOLT Connecting Rod 0 623 79 BOLT Flywheel to Crank 7 IB 20 x 28 ROD Engine Connecting 0 603 1 A T 0 669 29 COIL Ignition 2 I70 60 WASHER Lock 7 15 Ext 6 932 30 STUD W Seal Valve Cover 0 446 6I FORK Clutch Release 0 795 31 NUT Connecting Rod Bolt 0 626 62 PLATE Clutch Driven 0 886 32 COVER Valve Push Rod 0 439 83 FLYWHEEL Engine M T 0 666 33 SWITCH Engine Oil Pressure 1 600 B4 CAP Crankshaft Rear Main Bearing 0 I 05 34 GASKET Push Rod Cover 0 443 65 BOLT Crankshaft Main Bearing Cap 0 056 35 BOLT Hex 5 I6 18 x 5 B 6 977 86 NUT Hex 8 915 36 BRACE Starter Motor 2 042 87 STUD Main Bearing Cap 0 056 37 MOTOR Starter 2 041 88 PIPE Screen 8 Support Oil Pump 38 BOLT Starter to Block 2 042 Suction I 656 39 PLUG Water Jacket Rear 2 OD 0 034 69 GASKET KIT Oil Pan 1 429 40 PLUG Camshaft Bearing Hole 0 553 90 SEAL Oil Pan Rear 1 429 41 BOLT Hex 3 B 16 x I 1 4 6 900 91 GASKET KIT Oil Pan 1 429 42 HOUSING Flywheel 0 683 92 SCREW Oil Pan Drain I 453 43 COVER Flywheel Housing 0 679 93 GASKET Oil Pan Drain Screw 1 456 44 SCREW Tap 1 4 20 x 7 1 S 8 977 94 PAN Oil I 426 45 FITTING Vacuum 3 278 95 SCREW Oil Pan to Block 1 428 46 PLUG Water Jacket Side 1 5 8 0 034 96 SEAL Oil Pan Front 1 429 47 BLOCK Engine Cylinder 0 033 97 BOLT Hex 5 16 I8 x 3 4 8 900 48 NOZZLE Timing Gear Oil I 7 3Z 0 748 98 PUMP Oil 1 652 49 VALVE Oil Filter By Pass 1 837 99 CAP Crankshaft Front Main Bearing 0 095 50 PLUG Oil Gallery Front Hole 0 034 I00 BEARING Crankshaft See 0 099 5I GASKET Water Pump 1 079 0 10l 8 0 103 0 096 52 PUMP Water 1 069 101 CRANKSHAFT Engine 0 646 t WAREHOUSlNG AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 51A 2 83 me 0 000 GROUP