The General Motors 8.1L engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 374176 | Drive Belt | belt |
| NGE012014 | Radiator Fan Shroud 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 |
| 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 |
| 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 |
| 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 |
| 1051396 | Engine Oil Supplement Lubricant | other_service |
| 1052942 | Crankshaft Rear Bearing Cap Sealant | other_service |
| 12377901 | Camshaft Rear Bearing Hole Plug Sealant | other_service |
| LG199 | Home Maintenance Kit | other_service |
| 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 |
| GM16576 | Seal, oil pan drain plug (part of item 63) | seal |
| GM18971 | Seal, crankshaft rear oil | seal |
| GM18972 | Seal, crankshaft front oil | seal |
| 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 |
| GM42165 | Thermostat, block heater 49C--60C (120F--140F) | thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.