Exhaust Elbow Gasket – Fits OMC Stern Drive & Volvo Penta 3.0L (Replaces 3850495, 908013)
Exhaust Elbow Gasket – Fits OMC Stern Drive & Volvo Penta 3.0L (Replaces 3850495, 908013) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Exhaust Elbow Gasket – Fits OMC Stern Drive & Volvo Penta 3.0L ...
Product Details
This Exhaust Elbow Gasket – Fits OMC Stern Drive & Volvo Penta 3.0L (Replaces 3850495, 908013) creates a reliable seal between the exhaust elbow and manifold or riser. It is engineered for OMC Stern Drive 2.5L and 3.0L models, along with Volvo Penta 3.0L engines, ensuring proper exhaust system function.
This component provides a direct interchange for Volvo Penta 3850495, OMC 908013/33770, Sierra 18-2875, and Mallory 9-42800.
- Bolt-on, direct replacement installation.
- Seals the exhaust manifold to the riser or elbow connection.
- Package includes two gaskets.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3850495 |
| OMC | 908013 |
| OMC | 33770 |
| Sierra | 18-2875 |
| Mallory | 9-42800 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for various OMC Stern Drive, Inboard, and Cobra models.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| OMC | Stern Drive | 185 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 200 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 225 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 230 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 240 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 250 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 260 | 4-Stroke | 908013, 33770 |
| OMC | Stern Drive | 350 | 4-Stroke | 908013, 33770 |
| OMC | Inboard | 305 | 4-Stroke | 908013, 33770 |
| OMC | Cobra | 3.0L | 4-Stroke | 908013, 33770 |
Compatible with specific Volvo Penta 3.0L engines.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | 3.0L | 4-Stroke | 3850495 |
Technical Specs
- Product Type
- Exhaust Elbow Gasket
- Installation
- Direct replacement, bolt-on
- Connection
- Exhaust manifold to riser/elbow
- Package Quantity
- 2 pieces per package
What’s in the Box
- 2 x Exhaust Elbow Gasket (3850495/908013)
Installation Notes
- Ensure the engine is completely cool before starting work. Disconnect the battery.
- Close the water intake seacock to prevent water from entering the engine.
- Carefully remove the exhaust hose connected to the elbow/riser.
- Unbolt and remove the old exhaust elbow or riser from the manifold.
- Thoroughly clean both mating surfaces, removing all traces of the old gasket and any corrosion or debris.
- Position the new gasket onto the manifold, ensuring alignment with the bolt holes.
- Install the exhaust elbow or riser, and tighten the bolts to the manufacturer's specified torque in the correct sequence.
- Reconnect the exhaust hose and open the water intake seacock.
- Reconnect the battery. Start the engine and check for any exhaust or water leaks around the new gasket.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
The best method is to compare your old part number to the ones listed in our Part Number Matrix. Also, check your engine model against the compatibility tables. If you are still unsure, inspect the product photos and compare them to your existing gasket.
Should I use sealant with this gasket?
Generally, these gaskets are designed to be installed dry without any additional sealant. Applying sealant can sometimes cause the gasket to slip or fail prematurely. Always follow your engine manufacturer's service manual for specific recommendations.
What are the signs of a failing exhaust elbow gasket?
Common symptoms include visible water leaks around the manifold/riser joint (especially when the engine is running), rust stains originating from the joint, engine overheating, or an unusual amount of steam from the exhaust.
How often should this gasket be replaced?
Replacement intervals depend heavily on usage (freshwater vs. saltwater) and operating hours. It is standard practice to replace gaskets whenever the exhaust riser or elbow is removed for inspection or replacement, typically every 3-5 years in saltwater environments.
Is this a single gasket or a pair?
This product is sold as a package of two gaskets, as indicated in the "What's in the Box" section.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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