Parts for 4.5L MPI 250 Alpha / Bravo Ec 4.5L (274 Cu In) V6 Mercury MerCruiser Engines - Gas Raw Water Cooling Crossover Assembly
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #1 | 8M0107034 | CROSSOVER-RWC (1 required per assembly) |
| #2 | 8M0180564 | PLUG @5 (2 required per assembly) — Replaces: 73379 |
| #3 | 8M0081836 | SEAL (2 required per assembly) |
| #4 | 8M0204679 | PLUG-PIPE (2 required per assembly) — Replaces: 428611 |
| #5 | 866725 | FTG-STRGT 3/4 NPT (2 required per assembly) |
| #6 | 8M0148668 | SENSOR-TEMP (1 required per assembly) — Replaces: 885342002 |
| #7 | 896699 | O-RING (1.78 MM X .08 MM) (1 required per assembly) |
| #8 | 8M0090430 | HOSE FSM TO CROSSOVER (1 required per assembly) |
| #9 | 390721 | PLUG @3 (1 required per assembly) |
| #10 | 8M0085864 | FITTING (1 required per assembly) |
| #11 | 8M0180565 | PLUG (1 required per assembly) — Replaces: 32803 |
| #12 | 8M0153661 | SCREW (2 required per assembly) — Replaces: 4009516 |
| #13 | 8M0073879 | CAP (1 required per assembly) |
| #14 | 8M0079167 | GASKET (1 required per assembly) |
| #15 | 8M0204687 | GASKET @5 (1 required per assembly) — Replaces: 806871 |
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27-8M0204687 - Thermostat Gasket, Priced Individually [ More info ] Unavailable |
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| #16 | 8M0089715 | THERMOSTAT-140 (1 required per assembly) |
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18-3551 - Thermostat, 142 Degrees, 807252T1, 59137 [ More info ] |
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807252Q 4 - Thermostat Kit, 140 Degrees [ More info ]
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| #17 | 8M0119211 | DRAIN PLUG @5 (1 required per assembly) — Replaces: 806608A02 |
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22-8M0119211 - Drain Plug, Priced Individually, .5 inch x 13 [ More info ] |
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| #18 | 26802 | O-RING (.424 X .103) (1 required per assembly) |
| #19 | 8M2600010 | SCREW (M6X10) RWC COVER BRACKET (4 required per assembly) |
| #20 | 815504105 | CLAMP (2 required per assembly) |
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54-815504105 - Clamp [ More info ] Unavailable |
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54-8M0188618 - CLAMP [ More info ] Unavailable |
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| #21 | 8M0074364 | COVER-CLAMP @20 (AR required per assembly) |
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198M0074364 - Cover-Clamp - Priced Individually [ More info ] |
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| #22 | 815504216 | CLAMP (4 required per assembly) |
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54-815504216 - Clamp [ More info ] Unavailable |
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| #23 | 40095110 | SCREW (4 required per assembly) |






