676-18-1843 Key Features: Additional Details: - Fits: MCM/MIE GM V-8 (305, 350 & 377 cid) engines with dry joint exhaust (2002 & newer)
Use With: Interchanges/ReplacesMercruiser Stern Drive- 864308T01
- 865049T01
- 865735A02
List 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 | ![](/images/product/icon/18-2949.JPG) | N/A | 18-4224 | GLM Mallory Mercruiser Stern Drive
| 1 | Drain Elbow Assembly | ![](/images/product/icon/18-4224.JPG) | N/A | NSS | Mercruiser Stern Drive
| 4 | Bolt | No Image | 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 | ![](/images/product/icon/18-2971.jpg) | N/A | 18-2909 | Barr Crusader GLM Mallory Mercruiser Stern Drive OMC Stern Drive Osco Volvo Penta Yamaha Sterndrive
| 1 | Exhaust Manifold Gasket | ![](/images/product/icon/18-2909.jpg) | 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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676-18-1964 Key Features: - Water cooled center discharge manifold to fit the small block GM engine. All years.
Use With: Interchanges/ReplacesBarr
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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 | ![](/images/product/icon/18-0680.JPG) | 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 | ![](/images/product/icon/18-2833.JPG) | N/A |
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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 | ![](/images/product/icon/18-2854-1.jpg) | N/A | 18-2949 | Barr Crusader GLM Mercruiser Stern Drive Osco Volvo Penta
| 1 | Exhaust Manifold Gasket | ![](/images/product/icon/18-2949.JPG) | N/A |
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676-18-1929 Key Features: Additional Details: - For: Crusader GM Big Block V8 454cu.in (Models CH350 & 454XL)
Use With: Interchanges/ReplacesBarrCrusaderMalloryOsco
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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 | ![](/images/product/icon/18-2949.JPG) | N/A | 18-2971-1 | Barr GLM Mallory Osco Volvo Penta
| 1 | Exhaust Manifold Gasket | ![](/images/product/icon/18-2971.jpg) | N/A |
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676-18-1986-1 Key Features: - GM Small Block (V8) 305-350 cu. in.
- Port & Starboard
Additional Details: Use With: Interchanges/ReplacesBarrGLMHGEMalloryOMC Stern Drive- 3852374
- 3857579
- 3857723
- 914035
OscoVolvo PentaList of Containing Parts Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments | 18-710-16-2 | | 1 | Hose Clamp-11/16 TO 1-1/2 | ![](/images/product/icon/HoseClamps.jpg) | N/A | NSS | Volvo Penta
| 1 | Adaptor, Manifold | No Image | N/A | NSS | Volvo Penta
| 1 | Brass Elbow | No Image | N/A |
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