Parts for 425 (Gen. V) GM 454 V-8 7.4L (454 Cu In) V8 GM MerCruiser Engines - Gas Exhaust Manifold / Elbow (420 Gil System)
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #- | 13218A1 | GASKET SET (1 required per assembly) |
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27-13218A 1 - Gasket Set [ More info ] Unavailable |
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| #1 | 8M0084206 | MAIFOLD ASY-PORT (1 required per assembly) — Replaces: 814901A5 |
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8M0084206 - Manifold Assembly - Port [ More info ] Unavailable |
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| #1 | 814901T6 | MANIFOLD ASY-STBD (1 required per assembly) — Replaces: 814901A6 |
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814901T 6 - Manifold Assembly, Starboard Side [ More info ] Unavailable |
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| #2 | 815214 | STUD (8 required per assembly) |
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16-815214 - Stud [ More info ] Unavailable |
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| #3 | 815212 | HOSE MANIFOLD TO EXHAUST PIPE (2 required per assembly) |
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32-815212 - Molded Hose [ More info ] Unavailable |
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| #4 | 815213 | FITTING (2 required per assembly) |
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22-815213 - Fitting, NLA [ More info ] Unavailable |
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| #5 | 815203 | PLUG (2 required per assembly) |
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19-815203 - Plug [ More info ] Unavailable |
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| #6 | 815205 | FREEZE PLUG (1.00 INCH) (10 required per assembly) |
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19-815205 - Plug, NLA [ More info ] Unavailable |
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| #7 | 815204 | FREEZE PLUG (.750 INCH) (4 required per assembly) |
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19-815204 - Plug [ More info ] Unavailable |
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| #8 | 815208 | FITTING TEE (4 required per assembly) |
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22-815208 - Fitting, NLA [ More info ] Unavailable |
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| #9 | 815210 | FITTING TEE (2 required per assembly) |
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22-815210 - Fitting [ More info ] Unavailable |
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| #10 | 815210 | FITTING TEE (2 required per assembly) |
| #11 | 815209 | FITTING TEE (2 required per assembly) |
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22-815209 - Fitting, NLA [ More info ] Unavailable |
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| #12 | 815211 | PLUG PIPE DRAIN (2 required per assembly) |
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19-815211 - PLUG,NLA [ More info ] Unavailable |
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| #13 | 815215 | HOSE (3.500 INCHES) (6 required per assembly) |
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32-815215 - Hose - 3.5 Inch [ More info ] Unavailable |
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| #14 | 815207 | CLAMP (16 required per assembly) |
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54-815207 - Clamp [ More info ] Unavailable |
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| #15 | 46820 | GASKET EXHAUST MANIFOLD (2 required per assembly) |
| #16 | 8M0204664 | STUD @3 (4 required per assembly) — Replaces: 49545 |
| #17 | 49112 | WASHER (8 required per assembly) |
| #18 | 82670912 | NUT @5 (8 required per assembly) — Replaces: 68411 |
| #19 | 818608A1 | TAIL PIPE Standard (2 required per assembly) — Replaces: 814902A2 |
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42-818608A 1 - TAIL PIPE,NLA [ More info ] Unavailable |
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| #19 | 818609A1 | TAIL PIPE (3.00 Inches) (OPT required per assembly) |
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42-818609A 1 - TAIL PIPE,NLA [ More info ] Unavailable |
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| #19 | 818610A1 | TAIL PIPE (6.00 Inches) (OPT required per assembly) |
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42-818610A 1 - TAIL PIPE,NLA [ More info ] Unavailable |
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| #20 | 848147 | GASKET EXHAUST ELBOW (2 required per assembly) |
| #21 | 815166 | SCREW (8 required per assembly) |
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10-815166 - SCREW,NLA [ More info ] Unavailable |
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| #21 | 37612 | SCREW @5 (4 required per assembly) |
| #22 | 20553 | WASHER @5 (12 required per assembly) |
| #23 | 25269 | NUT @5 (4 required per assembly) |





