Exhaust Elbow Gasket – Fits Volvo Penta & OMC Stern Drive/Inboard (Replaces 3863191, 3850496)

Exhaust Elbow Gasket – Fits Volvo Penta & OMC Stern Drive/Inboard (Replaces 3863191, 3850496)

This exhaust elbow gasket is engineered for a secure, leak-free seal on a wide range of Volvo Penta and OMC engines. It is designed for various Volvo Penta V6 and V8 inboard and stern drive models (160 to 430 HP) and is also compatible with OMC stern drive models (185 to 350 HP) and inboard models (305 to 454 HP).

This part is a direct replacement for Volvo Penta part numbers 3850496 and 3863191, as well as multiple OMC, Sierra, GLM, Mallory, Barr, and OSCO part numbers.

• Engineered for a direct fit to ensure straightforward installation.
• Constructed from high-temperature gasket material to withstand harsh marine exhaust conditions.
• Comes as a set of two gaskets to complete the job.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Volvo Penta

OMC Stern Drive

OMC Inboard

Technical Specifications

Package Contents

This package includes:

• 2 x Exhaust Elbow Gasket (Replaces Volvo Penta 3850496/3863191 & OMC 351325/909786)

Installation Guide

1. Ensure the engine has completely cooled and disconnect the boat's battery for safety.
2. Identify and locate the exhaust elbow where it connects to the exhaust manifold. Disconnect any attached hoses.
3. Carefully loosen and remove the bolts securing the elbow. You may need to use penetrating oil if the bolts are corroded.
4. Lift the elbow away and remove the old gasket. Thoroughly clean both mating surfaces on the manifold and the elbow, ensuring they are perfectly smooth and free of old gasket material, soot, or rust.
5. Align the new gasket onto the manifold, ensuring the bolt holes line up correctly.
6. Place the exhaust elbow back onto the gasket and manifold assembly.
7. Insert and hand-tighten the bolts. Then, using a torque wrench, tighten them in a crisscross pattern to the manufacturer's specified torque to ensure even pressure.
8. Reconnect any hoses you removed earlier and reconnect the battery.
9. Start the engine and carefully inspect the gasket area for any signs of water or exhaust leaks.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my engine?

A: This gasket is compatible with a wide range of Volvo Penta and OMC V6/V8 engines. Please review the "Compatible Engine Models" and "Part Number Cross-Reference" tables on this page to check for your model and horsepower rating. The most reliable method is to match the part number from your old gasket or your engine's service manual.

Q: What are the signs that my exhaust elbow gasket is failing?

A: Common indicators of a failed gasket include visible water leaks from the joint between the manifold and elbow, rust stains on the engine block below the joint, or engine overheating. In severe cases, a failed gasket can allow water to enter the engine cylinders, leading to catastrophic engine damage.

Q: How often should I replace my exhaust elbow gasket?

A: It is best practice to replace the gasket whenever the exhaust elbow or riser is removed for service or inspection. For boats operating in saltwater, we recommend inspecting the exhaust system annually for corrosion and leaks, and replacing gaskets as a preventative measure.

Q: OEM vs. Aftermarket?

A: 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.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.