Exhaust Manifold Gasket – Fits Volvo Penta MD6A MD6B MD7A MD7B (Replaces 859194, 3875382)

Product Details

This Exhaust Manifold Gasket is engineered to fit Volvo Penta MD6A, MD6B, MD7A, and MD7B marine diesel engines. Designed as a direct replacement for worn or damaged exhaust manifold seals, this gasket ensures proper sealing between the exhaust manifold and engine block to prevent leaks and maintain optimal engine performance.

Replaces Volvo Penta OEM part numbers 859194 and 3875382.

• Direct-fit replacement for Volvo Penta MD6 and MD7 series diesel engines
• Constructed to withstand high exhaust temperatures and marine environments
• Ensures reliable sealing to prevent exhaust leaks and maintain engine efficiency

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Application

Exhaust manifold sealing

Engine Type

Marine diesel

Compatibility

Volvo Penta MD6A, MD6B, MD7A, MD7B

What's in the Box

• 1 × Exhaust Manifold Gasket

Installation Notes

1. Disconnect the battery and allow the engine to cool completely before beginning work.
2. Remove the exhaust manifold by disconnecting mounting bolts and exhaust connections.
3. Clean both the engine block and manifold mating surfaces thoroughly, removing all traces of old gasket material and carbon buildup.
4. Inspect the manifold and engine block surfaces for warping, cracks, or damage that may prevent proper sealing.
5. Position the new exhaust manifold gasket on the engine block, ensuring all bolt holes and ports align correctly.
6. Reinstall the exhaust manifold, hand-tightening bolts first to ensure proper alignment.
7. Torque mounting bolts to manufacturer specifications in a cross-pattern sequence to ensure even sealing pressure.
8. Reconnect all exhaust components and check for proper clearance.
9. Reconnect the battery, start the engine, and inspect for exhaust leaks around the gasket area.

Troubleshooting & FAQ

How do I know if my exhaust manifold gasket needs replacement?

Common signs include visible exhaust leaks, soot buildup around the manifold, a loud ticking or hissing noise from the engine, decreased performance, or a strong exhaust smell in the engine compartment. If you notice any of these symptoms, inspect the gasket and replace it if damaged or deteriorated.

Can I reuse the old gasket during reinstallation?

No, exhaust manifold gaskets are designed for single use. Reusing a compressed or heat-cycled gasket will likely result in leaks and improper sealing. Always install a new gasket when removing the exhaust manifold.

Do I need any sealant with this gasket?

Most exhaust manifold gaskets are designed to seal properly without additional sealant. Consult your engine's service manual for specific recommendations. Using sealant when not required can sometimes cause installation issues or prevent proper sealing.

What torque specifications should I use for the manifold bolts?

Torque specifications vary by engine model. Refer to your Volvo Penta service manual for the exact torque values and tightening sequence. Always use a calibrated torque wrench and follow a cross-pattern tightening sequence to ensure even pressure distribution.

Will this gasket fit both freshwater and saltwater marine engines?

Yes, this gasket is suitable for both freshwater and saltwater marine diesel applications. It is constructed to withstand the corrosive marine environment typical of Volvo Penta MD6 and MD7 series engines.

How does this aftermarket gasket compare to the OEM version?

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.

What are your shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What warranty and return options do you offer?

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.

What should I check before installing this gasket?

Before installation, verify that both the exhaust manifold and engine block mating surfaces are flat, clean, and free from cracks or warping. Any surface damage can prevent the gasket from sealing properly. Also confirm that all mounting bolts are in good condition and not corroded or stripped.

Safety & Important Info

• Verify images/specifications against 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.