Exhaust Manifold Gasket – Fits Volvo Penta MD21A, MD32, MD29 (Replaces 859140)
Exhaust Manifold Gasket – Fits Volvo Penta MD21A, MD32, MD29 (Replaces 859140) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Exhaust Manifold Gasket – Fits Volvo Penta MD21A, MD32, MD29 (Repla...
Product Details
This aftermarket Exhaust Manifold Gasket – Fits Volvo Penta MD21A, MD32, MD29 (Replaces 859140) is designed for a range of Volvo Penta marine diesel engines. It is compatible with the MD19, MD21, MD27, MD29, and MD32 series, which were typically manufactured from the 1970s through the 1990s.
This gasket serves as a direct replacement for Volvo Penta part number 859140.
- Installs between the exhaust manifold and the exhaust pipe.
- Constructed from durable composite gasket material to withstand the marine environment.
- Secures via a standard bolt-on connection for straightforward installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 859140 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for a range of Volvo Penta diesel engines from the 1970s to the 1990s.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | MD19 | 4-Stroke | 859140 |
| Volvo Penta | MD21A | 4-Stroke | 859140 |
| Volvo Penta | MD21B | 4-Stroke | 859140 |
| Volvo Penta | MD27 | 4-Stroke | 859140 |
| Volvo Penta | MD29 | 4-Stroke | 859140 |
| Volvo Penta | MD32A | 4-Stroke | 859140 |
Technical Specs
- Product Type
- Exhaust Manifold Gasket
- Installation
- Between exhaust manifold and exhaust pipe
- Fuel Type
- Diesel
- Housing Material
- Composite gasket material
- Connection
- Bolt-on
- Dimensions
- 18.3" L x 12.5" W x 0.3" H
- Warranty
- Standard manufacturer warranty
What’s in the Box
- 1 x Exhaust Manifold Gasket (859140)
Installation Notes
- Ensure the engine is completely cool and the battery is disconnected before starting work.
- Carefully disconnect the exhaust pipe from the exhaust manifold.
- Remove the old gasket and thoroughly clean both mating surfaces. Scrape away any old gasket material, carbon, or rust.
- Position the new gasket, ensuring it aligns correctly with the bolt holes.
- Reattach the exhaust pipe and tighten the bolts in a crisscross pattern to the manufacturer's recommended torque specifications.
- After installation is complete, start the engine and carefully check for any exhaust leaks around the new gasket.
Troubleshooting & FAQ
How do I confirm this gasket fits my specific engine?
This gasket replaces Volvo Penta part number 859140. The best way to ensure a match is to cross-reference this part number with your service manual or the existing part. You can also check the compatibility table on this page, which lists compatible models like the MD19, MD21, and MD29 series.
What are the signs of a failing exhaust manifold gasket?
Common symptoms of a blown exhaust manifold gasket include loud ticking or hissing noises from the engine bay that increase with RPM, a noticeable decrease in engine performance and fuel efficiency, visible black soot around the manifold connection, and the smell of exhaust fumes inside the vessel.
Can I reuse my old bolts for installation?
While possible, it is highly recommended to use new bolts, especially in a marine environment where corrosion is a major factor. Old, corroded, or stretched bolts may not torque correctly, leading to an improper seal and potential exhaust leaks.
What is the recommended replacement interval?
There is no fixed replacement interval. This gasket should be replaced whenever the exhaust manifold is removed for service or if you detect any signs of a leak or failure.
What's the difference between an OEM and an aftermarket part?
This listing is for an aftermarket replacement, not an OEM component. It is engineered to meet or exceed OEM-level specifications using comparable materials. Our parts are manufactured in an ISO 9001 certified facility and are batch-inspected to ensure quality and consistency, offering a reliable alternative at a better value.
How fast is shipping and what does it cost?
We ship worldwide quickly, with typical transit times of 5–15 days. Standard shipping is free for most orders. Expedited shipping options, if available for your location, will be presented at checkout.
What is your warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard return window for items that are unused and in their original condition. See our policy page or contact us for detailed instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears on a compatibility list—do not proceed with the purchase.
- This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.
- Professional installation is strongly recommended for safety, performance, and to prevent damage to your engine.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world saltwater and freshwater conditions.
- Fast Global Fulfillment — With free standard delivery to most regions, you can expect your parts in 5–15 days, getting you back on the water faster.
- Manufacturer-Direct Value — By working directly with manufacturers, we offer fair pricing without compromising on materials or quality control.
Payment & Security
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