859194 Exhaust Manifold Gasket for Volvo Penta MD6A MD6B MD7A MD7B | JLM Marine

859194 Exhaust Manifold Gasket for Volvo Penta MD6A MD6B MD7A MD7B | JLM Marine

This Exhaust Manifold Gasket is engineered to fit Volvo Penta MD6A, MD6B, MD7A, and MD7B marine diesel engines. It provides a reliable seal between the exhaust manifold and engine block, preventing exhaust leaks and maintaining optimal engine performance in demanding marine environments.

This gasket directly replaces Volvo Penta OEM part numbers 859194 and 3875382, ensuring precise fitment and compatibility with your original equipment.

• Designed specifically for Volvo Penta MD6 and MD7 series diesel engines
• Ensures proper exhaust sealing and prevents leaks
• Aftermarket replacement built to OEM specifications

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

This package includes:

• 1 x Exhaust Manifold Gasket

Installation Guide

1. Allow the engine to cool completely before beginning work. Disconnect the battery to ensure safety.
2. Remove the exhaust manifold mounting bolts and carefully detach the manifold from the engine block. Take note of bolt positions and torque specifications.
3. Thoroughly clean both the manifold and engine block mating surfaces, removing all old gasket material, carbon deposits, and debris. Use a gasket scraper and appropriate solvent.
4. Inspect the manifold and engine block surfaces for warping, cracks, or damage. Replace components if necessary.
5. Position the new exhaust manifold gasket onto the engine block, aligning all bolt holes carefully. Ensure the gasket is oriented correctly.
6. Carefully place the exhaust manifold back onto the engine block, aligning it with the gasket and bolt holes. Avoid shifting the gasket during installation.
7. Hand-thread all mounting bolts first to ensure proper alignment. Do not fully tighten yet.
8. Torque the manifold bolts to manufacturer specifications in a criss-cross pattern, working from the center outward. This ensures even pressure distribution.
9. Reconnect any exhaust components, hoses, or fittings that were removed during disassembly.
10. Reconnect the battery and start the engine. Allow it to reach operating temperature while monitoring for exhaust leaks.
11. Inspect all connections and gasket sealing areas for any signs of exhaust leakage. Listen for unusual sounds.
12. After the first few hours of operation, re-check bolt torque and retighten if necessary as the gasket seats.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Volvo Penta engine?
A: Verify that your engine model is MD6A, MD6B, MD7A, or MD7B. Cross-reference your original part number (859194 or 3875382) with our part number table to ensure compatibility.

Q: What are the signs that my exhaust manifold gasket needs replacement?
A: Common symptoms include visible exhaust leaks at the manifold joint, hissing or popping sounds from the engine, decreased performance, or exhaust odors in the engine compartment. Replace the gasket if you notice any of these issues.

Q: How often should I replace the exhaust manifold gasket?
A: Replace the gasket whenever the exhaust manifold is removed for service or repair. Also replace it if you notice exhaust leaks or during routine engine overhauls, typically every 5-10 years depending on operating conditions.

Q: Can I reuse the old gasket if it looks okay?
A: No, exhaust manifold gaskets are designed for one-time use. Once compressed, they lose their sealing ability and should always be replaced to prevent leaks and ensure proper engine operation.

Q: What's the difference between OEM and aftermarket gaskets?
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.