3863191 Exhaust Manifold Elbow Riser Gasket for Volvo Penta OMC 4.3L 5.0L 5.7L 8.1L | JLM Marine

Exhaust Manifold Elbow Riser Gasket – Fits Volvo Penta OMC 4.3L 5.0L 5.7L 8.1L

This Exhaust Manifold Elbow Riser Gasket is designed for various Volvo Penta OMC Cobra marine engines, including 4.3L, 5.0L, 5.7L, and 8.1L models. It provides a reliable seal between the exhaust manifold and riser elbow, preventing leaks and ensuring optimal engine performance.

Direct Replacements: Volvo Penta #3850496, #3863191 | OMC Cobra #913783, #909786, #3850496, #351325 | Sierra #18-0943

• Compatible with GL, Gi, Gxi, 200, 225, 270, 300, and 320 series models
• Essential component for maintaining exhaust system integrity
• Designed to meet OEM specifications for reliable fitment

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.

Technical Specifications

Package Contents

• 1 × Exhaust Manifold Elbow Riser Gasket

Installation Guide

1. Disconnect the battery and allow the engine to cool completely before starting work.
2. Remove the riser elbow from the exhaust manifold by loosening and removing the mounting bolts.
3. Clean both the manifold and elbow mating surfaces thoroughly, removing all old gasket material and debris.
4. Inspect the surfaces for warping, cracks, or corrosion; address any issues before proceeding.
5. Position the new gasket on the exhaust manifold, aligning all bolt holes properly.
6. Carefully place the riser elbow onto the manifold, ensuring the gasket remains correctly aligned.
7. Install the mounting bolts hand-tight first to ensure proper alignment.
8. Torque the bolts to manufacturer specifications in a cross-pattern sequence to ensure even compression.
9. Reconnect any cooling hoses, exhaust components, or accessories that were removed.
10. Reconnect the battery and start the engine, allowing it to reach operating temperature.
11. Inspect the gasket area for any signs of exhaust or coolant leaks while the engine is running.
12. Re-check bolt torque after the first few hours of operation to ensure proper seal retention.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my engine?
A: Cross-reference your engine model and displacement (4.3L, 5.0L, 5.7L, or 8.1L) with the compatibility table above. Verify your original part number matches one of the OEM numbers listed: Volvo Penta 3850496 or 3863191, or OMC Cobra 913783, 909786, 3850496, or 351325.

Q: How often should I replace the exhaust manifold elbow gasket?
A: Replace the gasket whenever you remove the riser elbow for service or repair. Inspect it annually for signs of deterioration, leaks, or compression failure. Saltwater environments may require more frequent replacement due to accelerated corrosion.

Q: What are the signs that my exhaust elbow gasket is failing?
A: Common symptoms include visible exhaust or coolant leaks at the manifold-elbow joint, steam or smoke from the engine compartment, overheating, or a burnt smell. Address leaks immediately to prevent engine damage.

Q: Can I reuse the old gasket if it looks okay?
A: No, exhaust gaskets are designed for one-time use. Reusing a gasket—even if it appears intact—can result in improper sealing, exhaust leaks, and potential engine damage.

Q: Is this an OEM or aftermarket gasket?
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.