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Manifold Gasket – Fits Volvo Penta MD6, MD7 Series (Replaces 859194, 3875382)

Sale price $24.95 Regular price $39.00
Shipping calculated at checkout.

Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Manifold Gasket – Fits Volvo Penta MD6, MD7 Series is engineered to create a secure seal between the exhaust manifold and cylinder head. It is designed for a precise fit on marine diesel engines including the Volvo Penta MD6A, MD6B, MD7A, and MD7B models.

This part serves as a direct replacement for Volvo Penta part numbers 859194 and 3875382, and SeaSierra part 3875382.

  • Engineered for direct-fit installation.
  • Designed for use in marine diesel environments.
  • Package includes one manifold gasket.

Part Number Matrix

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

Brand Part Number
Volvo Penta 859194/3875382
SeaSierra 3875382

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This gasket is designed for specific Volvo Penta marine diesel engines. Please verify compatibility with your model.

Brand Model Stroke OEM Part No.
Volvo Penta MD6A 4-Stroke 859194/3875382
Volvo Penta MD6B 4-Stroke 859194/3875382
Volvo Penta MD7A 4-Stroke 859194/3875382
Volvo Penta MD7B 4-Stroke 859194/3875382

Technical Specs

Product Type
Exhaust Manifold Gasket
Installation
Direct replacement
Fuel Type
Diesel
Material
Composite gasket material
Dimensions
19.5" L x 9.5" W x 0.2" H
Weight
~0.5 kg (1.1 lb)
Warranty
Varies by manufacturer

What’s in the Box

  • 1 x Manifold Gasket (859194/3875382)

Installation Notes

  1. Ensure the engine is completely cool and disconnect the battery.
  2. Drain engine coolant to a level below the exhaust manifold to prevent spills.
  3. Carefully disconnect any sensors, hoses, or hardware attached to the manifold.
  4. Unbolt and remove the old manifold from the cylinder head.
  5. Thoroughly clean both the cylinder head and manifold mating surfaces. Remove all traces of old gasket material and carbon buildup.
  6. Align the new gasket correctly on the cylinder head mounting studs or dowel pins.
  7. Re-install the exhaust manifold, hand-tightening the bolts first.
  8. Following the manufacturer's service manual, torque the manifold bolts in the specified sequence to the correct values.
  9. Reconnect all previously removed sensors, hoses, and hardware.
  10. Refill the cooling system with the appropriate coolant.
  11. Reconnect the battery, start the engine, and carefully inspect for any exhaust or fluid leaks around the gasket.

Troubleshooting & FAQ

How do I know if this gasket fits my engine?

This gasket fits Volvo Penta MD6A, MD6B, MD7A, and MD7B marine diesel engines. Cross-reference your existing part number with 859194 or 3875382 to ensure compatibility. Always check the engine compatibility table on this page.

What are the signs of a failing manifold gasket?

Common signs include a loud exhaust noise from the engine bay, visible soot or black streaks around the manifold-head joint, decreased engine performance, higher engine operating temperatures, or the smell of exhaust fumes in the engine compartment.

Do I need to use sealant with this gasket?

Generally, modern composite gaskets like this one are designed to be installed dry. Applying sealant can sometimes interfere with a proper seal. Always follow the specific instructions in your engine's service manual.

How often should this gasket be replaced?

There is no fixed replacement interval. A manifold gasket should be replaced whenever the manifold is removed, or if it shows any signs of leaking or failure.

Is this aftermarket part the same as the OEM version?

This is an aftermarket part designed to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It provides a reliable seal and performance comparable to the original part.

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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