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420 GM 454 V8 1987-1989 - Serial 0A398941 Thru 0B622418 - Exhaust Manifold - Elbow (Mercruiser System)
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 | Superseded From | Special Notes |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 | 135881 | MANIFOLD, Exhaust | 2 | This Part is No Longer Available | |||||
| 2 | 27-46820 | GASKET, Exhaust Manifold To Cylinder Head | 2 | 2 | |||||
| 3 | 10-37612 | SCREW, (.375-16 x 1.250) | 4 | ||||||
| 3 | 10-812567 | SCREW, (.375-16 x 1.625) | 8 | ||||||
| 4 | 12-20553 | WASHER, (.406 x .734 x .063) | 16 | ||||||
| 5 | 12-20086 | WASHER, (.390 x .620 x .060) | 8 | ||||||
| 6 | 16-49545 | STUD | 4 | ||||||
| 7 | 11-25269 | NUT, (.375-24) | 4 | ||||||
| 8 | 22-36382 | 700-21887 | FITTING, (.250-18 x .62) Brass | 4 | |||||
| 9 | 22-36305T | ELBOW | 2 | 22-36305 | |||||
| 10 | 27-813714 | GASKET, Exhaust Elbow | 2 | No longer made, limited availability 2 | |||||
| 11 | 10-15007 | SCREW, (.375-16 x 6.25) | 8 | ||||||
| 12 | 10-37612 | SCREW, (.375-16 x 1.250) | 4 | ||||||
| 13 | 13-35048 | LOCKWASHER, (.375) | 4 | ||||||
| 14 | 10-37612 | SCREW, (.375-16 x 1.250) | 8 | ||||||
| 15 | 13-35048 | LOCKWASHER, (.375) | 8 | ||||||
| 16 | 138461 | ELBOW, Exhaust, Style I | 2 | This Part is No Longer Available | |||||
| 17 | 27-13848 | GASKET, Exhaust Pipe, Style I | 2 | 2 | |||||
| 18 | 13851A1 | PIPE ASSEMBLY, Exhaust, Style I | 2 | This Part is No Longer Available | |||||
| 19 | 18069 | DEFLECTOR, Exhaust, Style I | 2 | ||||||
| 20 | 177661 | ELBOW, Exhaust, Style II | 2 | ||||||
| 21 | 27-18238 | GASKET, Exhaust Pipe, Style II | 2 | 2 | |||||
| 22 | 15998A1 | PIPE ASSEMBLY, Exhaust, Style II | 2 | This Part is No Longer Available | |||||
| 23 | 32-182305 | HOSE, Exhaust, Style II | 2 | This Part is No Longer Available | |||||
| 24 | 54-180765 | CLAMP, Worm Gear, Style II | 4 | ||||||
| 25 | 22-36305T | ELBOW, Style II | 2 | 22-36305 | |||||
| 20 | 177661 | ELBOW, Exhaust, Style II With Muffler | 2 | ||||||
| 21 | 27-18238 | GASKET, Exhaust Pipe, Style II With Muffler | 2 | 2 | |||||
| 22A | 42-8136461 | MUFFLER, Exhaust, Style II With Muffler | 2 | This Part is No Longer Available | |||||
| 23 | 32-182305 | HOSE, Exhaust, Style II With Muffler | 2 | This Part is No Longer Available | |||||
| 24 | 54-180764 | CLAMP, Worm Gear, Style II With Muffler | 4 | ||||||
| 25 | 22-36305T | ELBOW, Style II With Muffler | 2 | 22-36305 | |||||
| - | 27-13218A1 | GASKET SET | 1 |