Parts for MerCruiser 350 Mag MPI Horizon Alpha / Bravo Front Cover & Circulating Pump
Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #1 | 850399 1 | PUMP ASSEMBLY, Water, Water (2 required per assembly) |
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850399 1 - 850399 1 - PUMP ASSEMBLY Wat * [ More info ] In stock  Replaced by 46-8M0113734 |
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46-8M0113734 - Water Pump Assembly [ More info ]
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18-3599-1 - Circulating Water Pump [ More info ]
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| #2 | 22-49146 | PLUG, Pipe (1 required per assembly) (Standard Cooling) |
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22-49146 - PLUG O NLA [ More info ] Unavailable |
| #3 | 27-34897 | GASKET, Water Pump (2 required per assembly) |
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27-34897 - Gasket - Priced Individually [ More info ]
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18-0891-9 - Gasket 27-34897 2-Pack [ More info ]
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| #4 | 22-860346 | FITTING, Elbow (90 Degree) (.750), 90 Degrees (1 required per assembly) (Closed Cooling) |
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22-860346 - Elbow [ More info ]
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| #5 | 16-35342 | STUD, (.312-24/.375-16 x 2.5625) (2 required per assembly) |
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16-35342 - 16-35342 - STUD (.312-24/.37 O [ More info ] Unavailable Replaced by 16-8M0076418 |
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16-8M0076418 - Stud [ More info ]
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| #6 | 10-32132 | SCREW, (.375-16 x 1.750) (1 required per assembly) |
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10-32132 - Screw [ More info ]
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| #6 | 10-47688 | SCREW, (.375-16 x 2.750) (1 required per assembly) |
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10-47688 - Screw [ More info ]
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| #7 | 807729T | PULLEY, Water Pump (1 required per assembly) (Standard Cooling) |
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807729T - Water Pump Pulley [ More info ]
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| #7 | 865047T | PULLEY, Water Pump (1 required per assembly) (Closed Cooling) |
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865047T - Water Pump Pulley [ More info ]
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| #8 | 10-47277 | SCREW, (.312-24 x .750) (4 required per assembly) |
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10-47277 - Screw - Priced Individually [ More info ]
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| #9 | 864297001 | SENSOR ASSEMBLY, Crankshaft Position (1 required per assembly) |
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864297001 - 864297001 - SENSOR ASSEMBLY O [ More info ] Unavailable Replaced by -864297T01 |
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864297T01 - Crank Position Sensor [ More info ]
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18-7556 - CrankShaft Sensor 864297001 [ More info ]
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| #10 | 25-885192 | O-RING (1 required per assembly) |
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25-885192 - O-Ring [ More info ]
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| #11 | 10-884018 | SCREW (1 required per assembly) |
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10-884018 - 10-884018 - SCREW O [ More info ] Unavailable Replaced by 10-884018001 |
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10-884018001 - Screw [ More info ]
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| #12 | 807730T | PULLEY, Crankshaft (1 required per assembly) |
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807730T - CrankShaft Pulley [ More info ]
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| #13 | 10-34352 | SCREW, (.375-24 x .875) (3 required per assembly) |
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10-34352 - Screw - Priced Individually [ More info ]
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| #14 | 863397 | HARMONIC BALANCER (1 required per assembly) |
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863397 - Balancer-harmonic [ More info ]
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| #15 | 10-32515 | SCREW, (.437-20 x 2.50) (1 required per assembly) |
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10-32515 - Screw - Priced Individually [ More info ]
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10-8M2021674 - Screw [ More info ]
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| #16 | 13-39131 | LOCKWASHER, (.437) (1 required per assembly) |
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13-39131 - LockWasher [ More info ]
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| #17 | 12-71458 | WASHER (1 required per assembly) |
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12-71458 - Washer [ More info ]
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| #18 | 863396 | TIMING COVER ASSEMBLY, Screws, Grommets, Oil Seal, and Gasket are Not Sold Seperately (1 required per assembly) |
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863396 - 863396 - TIMING COVER ASSE O [ More info ] Unavailable Replaced by -863396001 |
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863396001 - Timing Cover [ More info ]
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| #19 | 863398 | RELUCTOR WHEEL (1 required per assembly) |
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863398 - Wheel -reluctor [ More info ]
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| #20 | 845941 | RETAINER, Camshaft (1 required per assembly) |
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845941 - Retainer [ More info ]
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| #21 | 10-845943 | SCREW, (.250-20 x .500) (2 required per assembly) |
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10-845943 - Screw [ More info ]
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| #22 | 17161T | CHAIN, Timing (1 required per assembly) |
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17161T - Timing Chain [ More info ]
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| #23 | 43-811659 1 | SPROCKET, Camshaft (1 required per assembly) |
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43-811659 1 - Timing Sprocket [ More info ]
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| #24 | 10-845942 | SCREW, (.312-18 x .750) (3 required per assembly) |
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10-845942 - Screw [ More info ]
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| #25 | 43-17160 | SPROCKET, Crankshaft (1 required per assembly) |
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43-17160 - Sprocket [ More info ]
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| #26 | 19-816565 | PLUG, Pipe(.468) (1 required per assembly) |
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19-816565 - Plug [ More info ]
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| #27 | 57-865615004 | BELT (1 required per assembly) (Standard Cooling) (Alpha) (With Power Steering) |
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57-865615004 - 57-865615004 - BELT O [ More info ] Unavailable Replaced by 57-865615Q04 |
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57-865615Q04 - Serpentine Belt [ More info ]
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18-15101 - Serpentine Belt [ More info ]
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| #27 | 57-865615009 | BELT (1 required per assembly) (Standard Cooling) (Alpha) (CHS and Non Power Steering) |
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57-865615009 - 57-865615009 - BELT O [ More info ] Unavailable Replaced by 57-865615Q09 |
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57-865615Q09 - Belt [ More info ]
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| #27 | 57-865615003 | BELT (1 required per assembly) (Standard Cooling) (Bravo) (With Power Steering) |
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57-865615003 - 57-865615003 - BELT O [ More info ] Unavailable Replaced by 57-865615Q03 |
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57-865615Q03 - Belt [ More info ]
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| #27 | 57-865615008 | BELT (1 required per assembly) (Standard Cooling) (Bravo) (CHS and Non Power Steering) |
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57-865615008 - Serpentine Belt -2535 Mm [ More info ]
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57-865615Q08 - Belt [ More info ]
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| #27 | 57-865615006 | BELT (1 required per assembly) (Alpha/Bravo) (Closed Cooling) (With Power Steering) |
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57-865615006 - 57-865615006 - BELT O [ More info ] Unavailable Replaced by 57-865615Q06 |
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57-865615Q06 - Belt [ More info ]
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| #- | 27-861246A05 | GASKET SET, Engine Overhaul (1 required per assembly) |
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27-861246A05 - Gasket Set [ More info ]
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