Exhaust Elbow Gasket – Fits OMC Stern Drive & Volvo Penta 3.0L
This high-quality exhaust elbow gasket is designed for a precise fit on a wide range of OMC Stern Drive and Volvo Penta marine engines. It creates a reliable seal between the exhaust manifold and the riser or elbow, preventing leaks and ensuring optimal engine performance.
Engineered as a direct replacement for OEM parts, this gasket matches the form and function of the original component. It is compatible with OMC part numbers 908013 and 3850495, and Volvo Penta part number 3850495.
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Package Contents: Includes 2 pieces of the exhaust elbow gasket.
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Material: Constructed from a durable composite fiber material to withstand the harsh marine environment.
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Installation: Bolt-on, direct replacement design for straightforward installation.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| OMC |
908013 |
| OMC |
3850495 |
| Volvo Penta |
3850495 |
| Sierra |
18-2875 |
| GLM |
33770 |
| Mallory |
9-42800 |
| Mallory |
9-65100 |
| Barr |
OMC47908013 |
| INDMAR |
01-0107 |
| Osco |
0188-G |
Compatible Engine Models
Confirm your engine model/year in the table below.
OMC
| Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| OMC |
Stern Drive |
100 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
120 |
4-Stroke |
1981-1986 |
908013, 33770 |
153 CID / 2.5L GM |
| OMC |
Stern Drive |
140 |
4-Stroke |
1973-1990 |
908013, 33770 |
181 CID / 3.0L GM |
| OMC |
Stern Drive |
155 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
165 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
170 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
175 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
185 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
190 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
200 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
225 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
230 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
235 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
240 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
245 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
250 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Stern Drive |
260 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Cobra |
3.0L |
4-Stroke |
1981-1990 |
908013, 33770 |
|
| OMC |
Inboard |
305 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
| OMC |
Inboard |
350 |
4-Stroke |
1973-1990 |
908013, 33770 |
|
Volvo Penta
| Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| Volvo Penta |
3.0L GS |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GL |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GLMMDA |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSMBYMCE |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSMLKD |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSMNCS |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSMWTR |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPBYMCE |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPEFS |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPLKD |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPMDA |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPNCS |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSPWTR |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GLM-A/B/C |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GLP-A/B/C/D/E/J/N |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSM-A/B/C |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
| Volvo Penta |
3.0L GSP-A/B/C |
135-150 |
4-Stroke |
1993-2010 |
3850495 |
|
Technical Specifications
| Product Type |
Exhaust Elbow Gasket |
| Installation |
Direct replacement, bolt-on |
| Connection |
Exhaust manifold to riser/elbow |
| Package Quantity |
2 pieces per package |
| Material |
Composite fiber material |
| Application |
Marine stern drive engines |
| Fitting Type |
Bolt-on, direct replacement |
Package Contents
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2 x Exhaust Elbow Gasket (Replaces 3850495/908013)
Installation Guide
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Safety First: Ensure the engine is completely cool and disconnect the battery terminals to prevent accidental starting.
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Drain Coolant: If your system is fresh-water cooled, drain the coolant from the exhaust manifold to avoid spills.
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Remove Hoses: Carefully disconnect any cooling hoses attached to the exhaust elbow or riser.
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Unbolt Elbow/Riser: Loosen and remove the bolts securing the exhaust elbow to the manifold. You may need a breaker bar for stubborn bolts.
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Remove Old Gasket: Lift the elbow off and set it aside. Carefully remove the old gasket.
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Clean Surfaces: Thoroughly clean both mating surfaces on the manifold and the elbow. Use a gasket scraper or wire brush to remove all old gasket material and corrosion.
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Position New Gasket: Place the new gasket onto the manifold, ensuring a correct and flush alignment with the bolt holes.
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Reinstall Elbow: Carefully place the elbow back onto the gasket and thread the bolts by hand.
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Torque Bolts: Tighten the bolts in a crisscross pattern to the manufacturer's recommended torque specification to ensure an even seal.
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Final Connections: Reattach all cooling hoses and clamps. Refill coolant if necessary.
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Check for Leaks: Reconnect the battery. Start the engine and let it run for a few minutes while carefully checking for any exhaust or water leaks around the new gasket.
Troubleshooting & FAQ
How do I confirm this gasket fits my specific OMC or Volvo Penta engine?
The most reliable method is to check your engine's model and year against the detailed compatibility tables provided on this page. You can also compare the OEM part number listed in your service manual (3850495 or 908013) with our cross-reference list.
What are the common signs of a failing exhaust elbow gasket?
Symptoms of a bad gasket include visible water leaks around the joint between the manifold and elbow, an overheating engine, steam or water vapor coming from the engine compartment, or a noticeable drop in engine performance.
How often should this gasket be replaced?
It is recommended to replace exhaust elbow and riser gaskets during routine exhaust system maintenance, typically every 3-5 years in saltwater environments or when the components are removed for inspection or other service.
OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.