The General Motors 8.1L engine line groups 3 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 0D5420 | AIR FILTER (NOT SHOWN) | air_filter |
| 0A1232 | D.C. ALTERNATOR ASSY | alternator |
| 0A4278C | BELT, SERPENTINE | belt |
| 0A4278D | BELT, SERPENTINE 75.0" LG (G/B TURBO) | belt |
| 374176 | Drive Belt | belt |
| NGE012014 | Charge Air Cooler Bolts | bolt |
| 375105 | Clutch Pilot Bearing Removal (C/K/C3500HD) | clutch_pilot_bearing_removal |
| 470627 | Clutch Pilot Bearing Removal (Medium Duty) | clutch_pilot_bearing_removal |
| 373133 | Clutch Pilot Bearing Removal Tools Required | clutch_pilot_bearing_removal_tools_required |
| 640014 | Crankshaft Balancer Removal Steps | crankshaft_balancer_removal_steps |
| 640013 | Crankshaft Balancer Removal Tools Required | crankshaft_balancer_removal_tools_required |
| 638596 | Cylinder Head and Components | cylinder_head_and_components |
| 638608 | Engine Crankshaft and Components | engine_crankshaft_and_components |
| 470599 | Engine Flywheel Housing Removal (Medium Duty with AT) | engine_flywheel_housing_removal |
| 470572 | Engine Flywheel Removal (C/K/C3500HD with AT MT1) | engine_flywheel_removal |
| 470576 | Engine Flywheel Removal (Medium Duty with MT) | engine_flywheel_removal |
| 677814 | Engine Flywheel Removal (C3500HD with AT M74) | engine_flywheel_removal |
| 679414 | Engine Flywheel Removal (C/K with MT) | engine_flywheel_removal |
| 677764 | Engine Identification Number | engine_identification_number |
| 1052367 | Engine Oil Supplement Lubricant | fluid |
| 9985770 | MAP Sensor Seal Lubricant | fluid |
| GM16430 | Sealer, oil pan / Sealant, Loctite | fluid |
| GM18888 | Sealer, crankshaft rear main bearing | fluid |
| GM18933 | Sealer, camshaft bearing hole plug | fluid |
| GM18934 | Grease, heavy duty multipurpose | fluid |
| 638592 | Flywheel Housing Adapter, Medium Duty with Manual Transmission | flywheel_housing_adapter |
| 055466 | GASKET-EXH MANIFOLD | gasket |
| 0C6960 | GASKET, THERM 3LHA | gasket |
| 0C81660121 | GASKET, WATER PUMP | gasket |
| 0C81660124 | GASKET, ENG FRT COVER | gasket |
| 0C81660142 | GASKET, OIL PAN | gasket |
| 0C81660168 | GASKET, ENG COOL C/OVR PIPE | gasket |
| 0C81660200 | GASKET VLV RKR ARM CVR | gasket |
| 0C81660203 | GASKET, VLV RKR ARM CVR | gasket |
| 0C81660226 | GASKET, CYL HEAD LH | gasket |
| 0C81660227 | GASKET, CYL HEAD RH | gasket |
| 0C81660253 | GASKET, EGR VLV PIPE | gasket |
| 0C81660263 | GASKET KIT, INT MANIF (NOT SHOWN) | gasket |
| 0C9786 | GASKET-MANIFOLD INTAKE | gasket |
| GM18951 | Gasket, engine front cover, also part of 76 | gasket |
| GM18963 | Gasket, water pump | gasket |
| GM18964 | Gasket, engine coolant crossover | gasket |
| GM19009 | Gasket, oil pan | gasket |
| 047290 | HOSE 3/8 ID SINGLE BRAID (16” LG) | hose |
| 083982 | HOSE 3/8 ID 100R6 OIL LINE | hose |
| 0C81660159 | HOSE, THERM BYPASS (INCL CLAMPS) | hose |
| 0C81660262 | HOSE, FUEL PRESS REG VAC | hose |
| 0E5353 | HOSE,90DEG PREFORMED 3/8" I.D. | hose |
| 0E5362 | HOSE,90DEG PREFORMED 3/4" I.D. | hose |
| GM18967 | Hose, therm bypass includes hose clamps | hose |
| 638602 | Intake Manifold and Components | intake_manifold_and_components |
| 638616 | Lower Engine Block and Components | lower_engine_block_and_components |
| 0C81660135 | OIL FILTER | oil_filter |
| GM16703 | Filter, oil | oil_filter |
| 470639 | Oil Level Indicator and Tube Removal (C/K/C3500HD) | oil_level_indicator_and_tube_removal |
| 470666 | Oil Level Indicator and Tube Removal (G) | oil_level_indicator_and_tube_removal |
| 022676 | FUSE AGC-15A. | other_service |
| 0333-0588-03 | Coolant heater, 1500W, 120V | other_service |
| 0C81660100 | RING KIT, PISTON, STD | other_service |
| 0C81660101 | RING KIT, PISTON, O.S. 0.030" | other_service |
| 0C81660107 | BEARING KIT, CONN ROD | other_service |
| 0C81660126 | BEARING KIT, CR/SHF | other_service |
| 0C81660127 | BEARING KIT, CR/SHF THRUST | other_service |
| 0C81660180 | PIN, 1/4 X 5/8 | other_service |
| 0C81660215 | VALVE, INT (STD) | other_service |
| 0C81660219 | VALVE, EXH (STD) | other_service |
| 0C81660223 | LIFTER, VALVE | other_service |
| 0C81660245 | COIL, IGNITION | other_service |
| 0D2031 | TENSIONER PULLEY | other_service |
| 0E4149 | IGN CON (MEFI-4) 8.1GM D/D PGM | other_service |
| 0E5355 | ASSY, AIR/OIL SEPERATOR | other_service |
| 1051396 | Engine Oil Supplement Lubricant | other_service |
| 1052942 | Crankshaft Rear Bearing Cap Sealant | other_service |
| 12377901 | Camshaft Rear Bearing Hole Plug Sealant | other_service |
| 24-XD | Battery, Crown 24-XD | other_service |
| GM23005-5 | Coolant heater, Hotstart, 1500W, 120V | other_service |
| GM28341 | Battery charger, 120V, 1.6A | other_service |
| LG199 | Home Maintenance Kit | other_service |
| 0C81660122 | PUMP KIT, WATER (INCL ITEMS 31,82,83,85,105) | pump |
| 0C81660138 | PUMP, OIL (W/SCRN) | pump |
| GM18990 | Pump, oil with screen | pump |
| GM19027 | Pump kit, water (incl. 31, 82, 83, 85, 105) | pump |
| 470515 | Repair Instructions - Draining Fluids and Oil Filter Removal | repair_instructions |
| 0A37970217 | SEAL, OIL PAN DRN PLUG | seal |
| 0C81660128 | SEAL, CR/SHF RR OIL | seal |
| 0C81660148 | SEAL, CR/SHF FRT OIL | seal |
| 0C81660162 | SEAL, ENG COOL THERM (O-RING) | seal |
| 0C81660237 | SEAL, VALVE STEM OIL | seal |
| 0C81660261 | SEAL, MAP SEN | seal |
| GM16576 | Seal, oil pan drain plug | seal |
| GM18971 | Seal, crankshaft rear oil | seal |
| GM18972 | Seal, crankshaft front oil | seal |
| 035606 | SENSOR HI COOLANT SHUTDOWN | sensor |
| 053666 | SENDER OIL PRESSURE | sensor |
| 053667 | SENDER WATER TEMP | sensor |
| 0A8584 | Switch | sensor |
| 0C81660171 | SENSOR, CM/SHF POSN | sensor |
| 0C81660172 | SENSOR, CR/SHF POSN | sensor |
| 0C81660174 | SENSOR, KNOCK | sensor |
| 0C81660260 | SENSOR, MAP | sensor |
| 0D2244M | ASSY MAGPICKUP (3/8-24 MALE) | sensor |
| 0E0561 | ASSY WATER LEVEL SENSOR C/E PL | sensor |
| 0E7590 | MAP SENSOR 2 ATMOSPHERE (8.1L DIRECT DRIVE TURBO) | sensor |
| 290090 | Switch, low water temperature | sensor |
| GM18906 | Sensor, knock | sensor |
| GM18952 | Sensor, crankshaft position (includes 123) | sensor |
| GM19004 | Sensor, camshaft position (2001 GM engines / GM model year 2003 and older) | sensor |
| GM24739 | Sensor, camshaft position (2002 and 2003 GM engines) | sensor |
| GM51539 | Sensor, camshaft position (2004-- GM engines) | sensor |
| GM75077 | Sensor, Cm/Shf Posn (GM model year 2004 and newer) | sensor |
| 0C81660212 | SPARK PLUG | spark_plug |
| 0E0307 | SPARK PLUG WIRE SET | spark_plug |
| 059056A | STARTER | starter |
| 0C81660163 | THERMOSTAT, ENG COOL | thermostat |
| GM42165 | Thermostat, block heater 49C--60C (120F--140F) | thermostat |
| 0E4149B | IGN CON (MWFI-4) 8.1GM (D/D TURBO) | turbocharger |
| 0E4149C | IGN CON (MEF1-4) 8.1GM (G/B TURBO) | turbocharger |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.