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420 GM 454 V8 1987-1989 - Serial 0A398941 Thru 0B622418 - Crankshaft - Pistons - Connecting Rods
Section Drawing: (Hover or click to view larger)
Other Sub-Sections:
- Alternator (Mando AC-155603)
- Alternator (Mando AR-150)
- Alternator (Motorola 8MR2039K)
- Alternator (Prestolite 8EM2003KA)
- Audio Warning System
- Carburetor And Linkage
- Crankshaft - Pistons - Connecting Rods
- Cylinder Block And Camshaft
- Cylinder Head And Rocker Cover
- Distributor And Ignition Components
- Driveshaft And Tailstock
- Electrical Components (0A398941 Thru 0D763854)
- Electrical Components (0D763855 Thru 0D937011)
- Exhaust Cover (420)
- Exhaust Manifold - Elbow (420 GIL System)
- Exhaust Manifold - Elbow (425 GIL System)
- Exhaust Manifold - Elbow (Mercruiser System)
- Flywheel Housing
- Fuel Pump And Fuel Filter (0A398941 Thru 0D725499)
- Fuel Pump And Fuel Filter (0D763855 Thru 0D937011)
- Intake Manifold And Front Cover
- Mount Plates (Engine)
- Oil Cooler (0A398941 Thru 0D725499)
- Oil Cooler (0D725500 Thru 0D937011)
- Oil Pan And Oil Pump (0A398941 Thru 0D725499)
- Oil Pan And Oil Pump (0D725500 Thru 0D937011)
- Power Steering Components
- Power Steering Cylinder Assembly
- Seawater Pump Assembly (0A398941 Thru 0D725499)
- Seawater Pump Assembly (0D725500 Thru 0D937011)
- Starter And Alternator Mounting
- Starter Assembly
- Thermostat Housing (420)
- Thermostat Housing (425)
- Transmission And Related Parts
- Transmission And Shift Linkage
- Transmission And Tailstock
| Ref. | OEM Part # | Hardin # | Mallory # | GLM # | Other # | Description | Num Req. | Superseded From | Special Notes |
| 1 | 737-5536T | PISTON ASSEMBLY, Standard | 8 | 737-5536 | This Part is No Longer Available SN# 0A398941 THRU 0D725499 | ||||
| 1 | 737-850477T | PISTON ASSEMBLY, Standard | 8 | 737-811565 | This Part is No Longer Available SN# 0D725500 THRU 0D937011 | ||||
| 1 | 737-5537 | PISTON ASSEMBLY, .030 Oversize | 8 | This Part is No Longer Available SN# 0A398941 THRU 0D725499 | |||||
| 1 | 737-827654 | PISTON ASSEMBLY, .030 Oversize | 8 | 737-811603 | This Part is No Longer Available SN# 0D725500 THRU 0D937011 | ||||
| 2 | 39-67127 | RING SET, Piston - Standard | 8 | SN# 0A398941 THRU 0D725499 | |||||
| 2 | 39-827651T | RING SET, Piston - Standard | 8 | 39-823098 | SN# 0D725500 THRU 0D937011 | ||||
| 2 | 39-67128 | RING SET, Piston - .030 Oversize | 8 | This Part is No Longer Available SN# 0A398941 THRU 0D725499 | |||||
| 2 | 39-850447 | RING SET, Piston - .030 Oversize | 8 | 39-823099 | SN# 0D725500 THRU 0D937011 | ||||
| 3/4 | 23-818473001 | BEARING SET, Main - Standard | 1 | 23-818473 | |||||
| 3/4 | 23-818474 | BEARING SET, Main - .001 Undersize | AR | ||||||
| 3/4 | 23-818475 | BEARING SET, Main - .002 Undersize | AR | ||||||
| 3/4 | 818476001 | BEARING SET, Main - .010 Undersize | AR | 23-818476 | |||||
| 3/4 | 23-818477 | BEARING SET, Main - .020 Undersize | AR | ||||||
| 5 | 17-843378 | PIN, Dowel (.250) | 1 | 17-35312 | |||||
| 6 | 26-14756 | SEAL, Oil | 1 | SN# 0A398941 THRU 0D725499 1 | |||||
| 6 | 26-811554 | SEAL, Oil | 1 | SN# 0D725500 THRU 0D937011 1 | |||||
| 7 | 230-5534 | FLYWHEEL | 1 | This Part is No Longer Available SN# 0A398941 THRU 0D725499 | |||||
| 7 | 230-8115631 | FLYWHEEL | 1 | 230-811563 | SN# 0D725500 THRU 0D937011 | ||||
| 8 | 10-845757 | SCREW, (.437-20 x 1.00) | 6 | 10-49845 | |||||
| 10 | 860125T | DRIVE PLATE | 1 | 47607A1 | |||||
| 11 | 10-35091 | SCREW, (.375-16 x 1.00) | 6 | ||||||
| 12 | 13-35048 | LOCKWASHER, (.375) | 6 | ||||||
| 13 | 614-8M0084554 | CONNECTING ROD ASSEMBLY | 8 | 614-9641 | |||||
| 14 | 10-19234 | SCREW, (.437-20) | 16 | ||||||
| 15 | 11-37493 | NUT, (.375-24) | 16 | No longer made, limited availability | |||||
| 16 | 23-85726001 | BEARING SET, Connecting Rod - Standard | 8 | 23-85726 | |||||
| 16 | 23-85727 | BEARING SET, Connecting Rod - (.001 Undersize) | AR | ||||||
| 16 | 23-85728 | BEARING SET, Connecting Rod - (.002 Undersize) | AR | This Part is No Longer Available | |||||
| 16 | 23-85691 | BEARING SET, Connecting Rod - (.010 Undersize) | AR | ||||||
| 16 | 23-85729 | BEARING SET, Connecting Rod - (.020 Undersize) | AR | ||||||
| 17 | 429-5880 | CRANKSHAFT | 1 | This Part is No Longer Available SN# 0A398941 THRU 0D725499 | |||||
| 17 | 429-811552 | CRANKSHAFT | 1 | SN# 0D725500 THRU 0D937011 | |||||
| 18 | 28-34466 | KEY, Crankshaft | 2 | SN# 0A398941 THRU 0D725499 | |||||
| 18 | 28-845607 | KEY, Crankshaft | 2 | 28-811558 | SN# 0D725500 THRU 0D937011 |