676-18-2374 Additional Details: Use With: Interchanges/ReplacesMalloryYamaha Outboard- 688-45341-00-00
- 688-45341-10-00
- 90340-08M02-00
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676-18-1997-1 Key Features: Additional Details: - Material: Cast Iron
- Type: Universal center riser manifold
- Fits: Crusader GM 283 & 327 CID Engines thru 1964
- Fits: Crusader GM 305, 307, & 350 CID Engines 1965 and later
- Fits: Chris-Craft 283, 302, 307 & 350 CID Engines
- Fits: Mercruiser GM 283, 305, 307, 350 CID Engines
- Fits: OMC 283, 305, 307 & 350 CID engines 1968-1980
- Fits: Volvo 307 & 350 CID engines
- Fits: Pleasurecraft GM 283, 305, 307 & 350 CID Engines
Use With: Interchanges/ReplacesBarrGLMHGEMalloryOscoList of Containing Parts | Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments | | 18-2854-1 | Barr
GLM
Mallory
Osco
| 1 | Exhaust Elbow Gasket |  | N/A | | 18-2949 | Barr
Crusader
GLM
Mercruiser Stern Drive
Osco
Volvo Penta
| 1 | Exhaust Manifold Gasket |  | N/A |
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676-18-1931-1 Key Features: - Supplied with Mounting Package
Additional Details: - Material: CAST IRON
- For: Port & Starboard
Use With: Interchanges/ReplacesBarrGLMHGEMalloryOscoVolvo PentaList of Containing Parts | Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments | | 18-2949 | Barr
Crusader
GLM
Mercruiser Stern Drive
Osco
Volvo Penta
| 1 | Exhaust Manifold Gasket | | N/A | | 18-2971-1 | Barr
GLM
Mallory
Osco
Volvo Penta
| 1 | Exhaust Manifold Gasket |  | N/A |
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676-18-1932 Additional Details: - Material: CAST IRON
- For: Port & Starboard
Use With: Interchanges/ReplacesGLMHGEVolvo PentaList of Containing Parts | Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments | | 18-2971-1 | Barr
GLM
Mallory
Osco
Volvo Penta
| 1 | Exhaust Manifold Gasket | | N/A | | 18-2909 | Barr
Crusader
GLM
Mallory
Mercruiser Stern Drive
OMC Stern Drive
Osco
Volvo Penta
Yamaha Sterndrive
| 1 | Exhaust Manifold Gasket |  | N/A |
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676-18-1956-3 Key Features: Use With: Interchanges/ReplacesBarrGLMMarine PowerMercruiser Stern Drive- 860235A04
- 99798A16
- 99798A3
- 99798A9
Osco
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676-18-1966-1 Additional Details: - Fits: MCM 3.0L/LX (1990 & newer); Marine Power Engine Model E181S
Interchanges/ReplacesMercruiser Stern Drive- 806867A12
- 806867A2
- 806867A3
- 806867A8
- 806867A9
- 816329A3
- 860235A03
- 99798A18
List of Containing Parts | Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments | | 18-0680 | GLM
Mallory
Mercruiser Stern Drive
OMC Stern Drive
Volvo Penta
| 1 | Exhaust Manifold Gasket |  | N/A | | 18-2833 | Barr
GLM
Mallory
Mercruiser Stern Drive
- 27-52076
- 27-99777
- 27-997771
- 27-997772
- 27-99777B2
Osco
| 1 | Exhaust Elbow Gasket |  | N/A |
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676-18-1976-2 Key Features:
- Comes with 18-0897, 18-4203 & 18-4258
- Recommended for saltwater applications
Additional Details:
- Fits: MCM/MIE GM V-6 & V-8 with center rise outlet exhaust manifold (2002 & older)
Use With:
Interchanges/Replaces
Barr
GLM
HGE
Mallory
Mercruiser Stern Drive
- 44354A10
- 44354A13
- 44354A3
- 44354A9
- 807914A1
- 807988A03
- 807988A2
Osco
List of Containing Parts
| Sierra Item # |
OE/Competitor # |
Quantity |
Description |
Image |
Comments |
| 18-0897 |
Barr
- MC 20 99208
- MC47-27-41813
GLM
Mallory
Mercruiser Stern Drive
- 27-41813
- 27-860233
- 27-863724
Osco
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Exhaust Elbow Gasket |
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N/A |
| 18-8410 |
Mercruiser Stern Drive
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4 |
Riser Bolt |
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N/A |
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676-18-4009 Use With: Interchanges/ReplacesBarrGLMMalloryMercruiser Stern DriveOsco
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676-18-1908 Additional Details: - Size: 3"
- For: Mercruiser GM V6 229 & 262cu.in (Models 185 & 205)
- For: Mercruiser GM Small block V8 305-350cu.in. (Models 200, 228, 230, 260 & 898)
- For: Mercruiser GM Big Block V8 454cu,in (Models 330, 340 & 7.4L)
Use With: Interchanges/ReplacesBarrMalloryMercruiser Stern DriveOsco
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676-18-6751 Additional Details:
- Fits: Most Mercury 2 & 4 Stroke Outboards w/ Integral tilt and trim
Interchanges/ReplacesChrysler/Force/US MarineMercury Marine- 811618
- 811618A1
- 812843A1
- 813442A1
- 813442A2
- 893929A01
- 99660A1
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676-18-7684 Key Features:
- For: 4.3L TBI(1996-98), 5.0L TBI(1998), 5.7L TBI(1996-98), 7.4L(1995-98), 8.2L(1998)
Additional Details:
- Fits: MCM/MIE GM V-6 & V-8 (350, 377, 454 & 502 CID) EFI Engines
Interchanges/ReplacesMalloryMercruiser Stern DriveOMC Stern DriveVolvo Penta
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676-18-7660 Additional Details:
- Fits: MCM V-6 & V-8 (305, 350 & 496 CID) MPI Engines With ECM 555
Interchanges/ReplacesCDIMalloryMercruiser Stern Drive
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This Part has options, please click the button below to order.
123-9-33603 MAP Sensor
Replaces: Mercruiser 854445
Fits: MCM 525 EFI
Malfunctioning MAP sensors can often cause problems, such as an intermittent check engine light, hesitation when accelerating, elevated emissions, and even poor engine performance. So, if yours is in need of replacement, do it with Mallory Marine MAP sensors. These MAP sensors provide precise measurements of manifold absolute pressure. They are designed to perform in harsh environments, such as extreme temperatures, vibration, thermal and mechanical shock, and chemical contamination. Safeguard your engine with these quality MAP sensor components.
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