Parts for 300r HP 4.6L V8 Racing 4-Stroke Mercury Outboard Motor Cylinder Head & Camshaft
Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #- | 8M0142279 | LONG BLOCK V8 250R (See Bulletin 2021-24) (1 required per assembly) |
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618M0142279 - LONG BLOCK V8 [ More info ] Unavailable |
| #- | 8M0149557 | LONG BLOCK ASSY 300R (1 required per assembly) |
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618M0149557 - LONG BLOCK ASSY [ More info ] Unavailable |
| #- | 8M0149551 | PWRHD GASKET SET (1 required per assembly) |
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8M0149551 - Powerhead Gasket Set [ More info ]
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| #1 | 8M0150214 | CYLINDER HEAD ASY 250R (1 required per assembly) |
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9008M0150214 - Cylinder Head ASY [ More info ] Unavailable |
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900-8M0221004 - CYLINDER HEAD ASY [ More info ] Unavailable |
| #1 | 8M0150215 | CYLINDER HEAD ASY 250R (1 required per assembly) |
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9008M0150215 - Cylinder Head ASY [ More info ]
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| #1 | 8M0150490 | CYLINDER HEAD STB 300R (1 required per assembly) |
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9008M0150490 - Cylinder Head STB [ More info ] Unavailable |
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900-8M0221005 - CYLINDER HEAD ASY [ More info ] Unavailable |
| #1 | 8M0150491 | CYLINDER HEAD POR 300R (1 required per assembly) |
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9008M0150491 - Cylinder Head POR [ More info ] Unavailable |
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900-8M0221003 - CYLINDER HEAD ASY [ More info ] Unavailable |
| #2 | 8M0142354 | VALVE SEAT, INTAKE (16 required per assembly) |
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8M0142354 - VALVE SEAT INTAKE [ More info ]
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| #3 | 8M0142355 | VALVE SEAT, EXHAUST (16 required per assembly) |
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8M0142355 - SEAT VALVE EXHST [ More info ]
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| #4 | 8M0142358 | VALVE GUIDE (32 required per assembly) |
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8M0142358 - Guide VALVE [ More info ]
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| #5 | NSS | NOT SOLD SEPARATE Cap-Camshaft (18 required per assembly) |
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NSS - NOT SOLD SEPARATE [ More info ] Unavailable |
| #6 | 8M0163131 | SCREW M6 (36 required per assembly) — Replaces: 892454035 |
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10-8M0163131 - SCREW @2 [ More info ] Unavailable |
| #7 | 8M0142357 | PLUG 21 MM SPECIAL (6 required per assembly) |
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198M0142357 - PLUG [ More info ]
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| #8 | 8M0087447 | PLUG (10MM) (12 required per assembly) |
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198M0087447 - Plug (10MM) [ More info ]
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| #9 | 8M0087451 | PLUG (18MM) (2 required per assembly) |
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198M0087451 - PLUG-18MM [ More info ]
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| #10 | 8M0087453 | PLUG (24 MM) (6 required per assembly) |
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198M0087453 - PLUG - 24MM [ More info ]
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| #11 | 8M0087454 | PLUG (30 MM) (2 required per assembly) |
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198M0087454 - PLUG - 30 MM [ More info ]
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| #12 | 8M0142364 | VALVE KEY (32 required per assembly) |
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288M0142364 - KEY VALVE [ More info ]
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| #13 | 8M0142363 | RETAINER (32 required per assembly) |
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8M0142363 - Retainer [ More info ]
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| #14 | 8M0142360 | SPRING (32 required per assembly) |
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248M0142360 - SPRING VALVE [ More info ]
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| #15 | 8M0142359 | SEAL VALVE (32 required per assembly) |
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8M0142359 - Seal VALVE STEM [ More info ]
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| #16 | 8M0142361 | VALVE INTAKE (16 required per assembly) |
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8M0142361 - Intake Valve [ More info ]
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| #17 | 8M0142362 | VALVE EXHAUST (16 required per assembly) |
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8M0142362 - VALVE Exhaust [ More info ]
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| #18 | 892454030 | SCREW (M6 X 30) (4 required per assembly) |
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10-892454030 - Screw - Priced Individually [ More info ]
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| #19 | 8M0142367 | TENSIONER (2 required per assembly) |
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8M0142367 - TENSIONER SECOND [ More info ]
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| #20 | 8M0142366 | CHAIN CAM TO CAM (2 required per assembly) |
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8M0142366 - CHAIN CAM TO CAM [ More info ]
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| #21 | 8M0142411 | CAMSHAFT EXHAUST, STARBOARD (1 required per assembly) |
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4008M0142411 - Camshaft EXHST ST [ More info ]
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| #21 | 8M0142416 | CAMSHAFT EXHAUST, PORT (1 required per assembly) |
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4008M0142416 - Camshaft EXHST PT [ More info ]
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| #22 | 8M0142412 | CAMSHAFT INTAKE, STARBOARD 250R (1 required per assembly) |
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4008M0142412 - Camshaft INTKE ST [ More info ]
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| #22 | 8M0142415 | CAMSHAFT INTAKE, PORT 250R (1 required per assembly) |
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4008M0142415 - Camshaft INTK PT [ More info ]
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| #22 | 8M0149556 | CAMSHAFT INTAKE, STARBOARD 300R (1 required per assembly) |
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4008M0149556 - Camshaft INTAKE S [ More info ]
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| #22 | 8M0149555 | CAMSHAFT INTAKE, PORT 300R (1 required per assembly) |
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4008M0149555 - Camshaft INTAKE P [ More info ]
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| #23 | 8M0142490 | TAPPET (3.240) (32/AR required per assembly) |
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8M0142490 - Tappet Bucket [ More info ]
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| #23 | 8M0142491 | TAPPET (3.255) (32/AR required per assembly) |
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8M0142491 - Tappet Bucket [ More info ]
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| #23 | 8M0142519 | TAPPET (3.270) (32/AR required per assembly) |
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8M0142519 - Tappet Bucket [ More info ]
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| #23 | 8M0142520 | TAPPET (3.285) (32/AR required per assembly) |
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8M0142520 - Tappet Bucket [ More info ]
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| #23 | 8M0142521 | TAPPET (3.300) (32/AR required per assembly) |
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8M0142521 - Tappet Bucket [ More info ]
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| #23 | 8M0142525 | TAPPET (3.315) (32/AR required per assembly) |
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8M0142525 - Tappet Bucket [ More info ]
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| #23 | 8M0142527 | TAPPET (3.330) (32/AR required per assembly) |
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8M0142527 - Tappet Bucket [ More info ]
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| #23 | 8M0142532 | TAPPET (3.345) (32/AR required per assembly) |
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8M0142532 - Tappet Bucket [ More info ]
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| #23 | 8M0142613 | TAPPET (3.360) (32/AR required per assembly) |
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8M0142613 - Tappet Bucket [ More info ]
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| #23 | 8M0142252 | TAPPET (3.375) (32/AR required per assembly) |
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8M0142252 - Tappet Bucket [ More info ]
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| #23 | 8M0142255 | TAPPET (3.390) (32/AR required per assembly) |
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8M0142255 - Tappet Bucket [ More info ]
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| #23 | 8M0142256 | TAPPET (3.405) (32/AR required per assembly) |
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8M0142256 - Tappet Bucket [ More info ]
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| #23 | 8M0142257 | TAPPET (3.420) (32/AR required per assembly) |
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8M0142257 - Tappet Bucket [ More info ]
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| #23 | 8M0142258 | TAPPET (3.435) (32/AR required per assembly) |
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8M0142258 - Tappet Bucket [ More info ]
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| #23 | 8M0142261 | TAPPET (3.450) (32/AR required per assembly) |
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8M0142261 - Tappet Bucket [ More info ]
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| #23 | 8M0142263 | TAPPET (3.465) (32/AR required per assembly) |
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8M0142263 - Tappet Bucket [ More info ]
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| #23 | 8M0142277 | TAPPET (3.480) (32/AR required per assembly) |
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8M0142277 - Tappet Bucket [ More info ]
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| #23 | 8M0142291 | TAPPET (3.495) (32/AR required per assembly) |
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8M0142291 - Tappet Bucket [ More info ]
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| #23 | 8M0142292 | TAPPET (3.510) (32/AR required per assembly) |
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8M0142292 - Tappet Bucket [ More info ]
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| #23 | 8M0142666 | TAPPET (3.525) (32/AR required per assembly) |
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8M0142666 - Tappet Bucket [ More info ]
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| #23 | 8M0142667 | TAPPET (3.540) (32/AR required per assembly) |
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8M0142667 - Tappet Bucket [ More info ]
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| #23 | 8M0142668 | TAPPET (3.555) (32/AR required per assembly) |
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8M0142668 - Tappet Bucket [ More info ]
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| #23 | 8M0142669 | TAPPET (3.570) (32/AR required per assembly) |
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8M0142669 - Tappet Bucket [ More info ]
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| #23 | 8M0142670 | TAPPET (3.585) (32/AR required per assembly) |
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8M0142670 - Tappet Bucket [ More info ]
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| #23 | 8M0142698 | TAPPET (3.600) (32/AR required per assembly) |
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8M0142698 - Tappet Bucket [ More info ]
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| #23 | 8M0142699 | TAPPET (3.615) (32/AR required per assembly) |
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8M0142699 - Tappet Bucket [ More info ]
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| #23 | 8M0142700 | TAPPET (3.630) (32/AR required per assembly) |
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8M0142700 - Tappet Bucket [ More info ]
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| #23 | 8M0142701 | TAPPET (3.645) (32/AR required per assembly) |
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8M0142701 - Tappet Bucket [ More info ]
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| #23 | 8M0142702 | TAPPET (3.660) (32/AR required per assembly) |
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8M0142702 - Tappet Bucket [ More info ]
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| #23 | 8M0142703 | TAPPET (3.675) (32/AR required per assembly) |
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8M0142703 - Tappet Bucket [ More info ]
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| #23 | 8M0142704 | TAPPET (3.690) (32/AR required per assembly) |
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8M0142704 - Tappet Bucket [ More info ]
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| #23 | 8M0142365 | TAPPET (3.000) (32/AR required per assembly) |
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8M0142365 - Tappet Bucket [ More info ]
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| #23 | 8M0142431 | TAPPET (3.015) (32/AR required per assembly) |
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8M0142431 - Tappet Bucket [ More info ]
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| #23 | 8M0142439 | TAPPET (3.030) (32/AR required per assembly) |
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8M0142439 - Tappet Bucket [ More info ]
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| #23 | 8M0142440 | TAPPET (3.045) (32/AR required per assembly) |
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8M0142440 - Tappet Bucket [ More info ]
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| #23 | 8M0142441 | TAPPET (3.060) (32/AR required per assembly) |
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8M0142441 - Tappet Bucket [ More info ]
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| #23 | 8M0142438 | TAPPET (3.075) (32/AR required per assembly) |
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8M0142438 - Tappet Bucket [ More info ]
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| #23 | 8M0142495 | TAPPET (3.090) (32/AR required per assembly) |
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8M0142495 - Tappet Bucket [ More info ]
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| #23 | 8M0142492 | TAPPET (3.105) (32/AR required per assembly) |
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8M0142492 - Tappet Bucket [ More info ]
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| #23 | 8M0142443 | TAPPET (3.120) (32/AR required per assembly) |
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8M0142443 - Tappet Bucket [ More info ]
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| #23 | 8M0142447 | TAPPET (3.135) (32/AR required per assembly) |
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8M0142447 - Tappet Bucket [ More info ]
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| #23 | 8M0142464 | TAPPET (3.150) (32/AR required per assembly) |
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8M0142464 - Tappet Bucket [ More info ]
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| #23 | 8M0142465 | TAPPET (3.165) (32/AR required per assembly) |
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8M0142465 - Tappet Bucket [ More info ]
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| #23 | 8M0142466 | TAPPET (3.180) (32/AR required per assembly) |
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8M0142466 - Tappet Bucket [ More info ]
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| #23 | 8M0142487 | TAPPET (3.195) (32/AR required per assembly) |
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8M0142487 - Tappet Bucket [ More info ]
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| #23 | 8M0142488 | TAPPET (3.210) (32/AR required per assembly) |
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8M0142488 - Tappet Bucket [ More info ]
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| #23 | 8M0142489 | TAPPET (3.225) (32/AR required per assembly) |
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8M0142489 - Tappet Bucket [ More info ]
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| #24 | 8M0142369 | SCREW (M10 X 107) TORX FLG HD (20 required per assembly) |
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108M0142369 - Screw [ More info ]
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| #25 | 893754035 | SCREW (M6 X 35) (4 required per assembly) |
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10893754035 - Screw [ More info ] Unavailable |
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10-8M0168894 - 10-8M0168894 - SCREW [ More info ] Unavailable Replaced by -8M0205943 |
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10-8M0205943 - SCREW [ More info ] Unavailable |
| #26 | 8M0142273 | GASKET CYLINDER HEAD Starboard (1 required per assembly) |
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278M0142273 - Head Gasket, Stbd [ More info ]
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| #26 | 8M0142272 | GASKET CYLINDER HEAD Port (1 required per assembly) |
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278M0142272 - Head Gasket, Port [ More info ]
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| #27 | 8M0142368 | ORING (1 required per assembly) |
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258M0142368 - ORING [ More info ]
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| #28 | 8M0142537 | GASKET MANIFOLD (1 required per assembly) |
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278M0142537 - Gasket Manifold [ More info ]
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