Exhaust Riser Gasket – Fits Volvo Penta V6/V8 Marine Engines (Replaces 857618)
Exhaust Riser Gasket – Fits Volvo Penta V6/V8 Marine Engines (Replaces 857618) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Exhaust Riser Gasket – Fits Volvo Penta V6/V8 Marine Engines (Repla...
Product Details
This genuine-quality Exhaust Riser Gasket – Fits Volvo Penta V6/V8 Marine Engines (Replaces 857618) is designed to create a secure seal between the exhaust riser and exhaust manifold. It is compatible with a wide range of gasoline Volvo Penta marine engines, including various models from the AQ, BB, DP, and SP series.
It serves as a direct replacement for several part numbers, including Volvo Penta 857618, Sierra 18-2971, Barr Marine VO47-835908, GLM 35080, and Mallory Marine 9-65800.
- Installation Location: Mounts between the exhaust riser and the exhaust manifold.
- Engine Fuel Type: Compatible with gasoline engines.
- Special Treatment: Features a leakage-proof and stick-proof coating for durability and easy removal.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Volvo Penta | 857618 |
| Volvo Penta | 835908-5 |
| Volvo Penta | 856039-3 |
| Sierra | 18-2971 |
| Sierra | 18-2971-1 |
| Barr Marine | VO47-835908 |
| GLM | 35080 |
| Mallory Marine | 9-65800 |
| OSCO | 35908 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for a variety of Volvo Penta gas engines and drive units.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | AQ175A | 857618 | |
| Volvo Penta | AQ200C, AQ200D, AQ225C, AQ225D, AQ255A, AQ255B | 857618 | |
| Volvo Penta | AQ205A | 857618 | |
| Volvo Penta | AQ200D, AQ200F, 280B, 290A, 290DP | 857618 | |
| Volvo Penta | AQ225D, AQ225E, AQ225F, BB225A, BB225AV, BB225B, BB225C, 275, 280B, 290A, 290DP, MS3B, MS3C, MS4A | 857618 | |
| Volvo Penta | AQ211A, DP-A, SP-A, 290A | 857618 | |
| Volvo Penta | AQ231A, AQ231B, 290A, DP-A, SP-A, 275A, 285A | 857618 | |
| Volvo Penta | AQ271A, AQ271B, AQ271C, AQ271D | 857618 | |
| Volvo Penta | AQ311A, AQ311B | 857618 | |
| Volvo Penta | BB231A, BB261A | 857618 | |
| Volvo Penta | AQ260A, AQ260B, BB260A, BB260AV, BB260B, BB260C | 857618 | |
| Volvo Penta | AQ290A | 857618 | |
| Volvo Penta | 500A, 501A | 857618 | |
| Volvo Penta | 571A | 857618 | |
| Volvo Penta | 430A, 430B, 431A, 431B, 432A, 434A, 500B, 501B, 570A, 572A, 740B | 857618 | |
| Volvo Penta | DP-A, DP-A1, DP-A2, DP-C, DP-C1, DP-C1 1.95, DP-C1 2.30, DP-D, DP-D1, DP-D1 1.68, DP-D1 1.78, DP-D1 1.95, DP-D1 2.30, SP-A, SP-A1, SP-A2, SP-C, SP-C1 | 857618 | Drive units |
Technical Specs
- Product Type
- Exhaust Riser Gasket
- Installation
- Between exhaust riser and exhaust manifold
- Fuel Type
- Gasoline
- Features
- Leakage-proof and stick-proof treatment
- OEM Part Number
- Volvo Penta 857618
- Dimensions
- 14.0" H x 9.0" L x 0.2" W
What’s in the Box
- 1 x Exhaust Riser Gasket (857618)
Installation Notes
- Ensure the engine is completely cool before beginning work. Disconnect the battery for safety.
- Carefully remove the exhaust riser from the exhaust manifold. Retain all mounting hardware.
- Thoroughly clean both the manifold and riser mating surfaces. Remove all old gasket material, sealant, rust, and debris.
- Position the new gasket, ensuring it aligns perfectly with all bolt holes and exhaust passages.
- Reinstall the exhaust riser and tighten the bolts to the manufacturer's specified torque in the correct sequence.
- Reconnect the battery, run the engine, and carefully check for any exhaust leaks at the new gasket.
Troubleshooting & FAQ
How do I know if my exhaust riser gasket is failing?
Common signs of a failed gasket include water leaking externally from the joint, water entering the cylinders (which can cause catastrophic engine damage), engine overheating, or a noticeable loss of performance. A visual inspection may reveal rust trails or water drips.
Is any sealant required when installing this gasket?
This gasket features a stick-proof treatment and is designed to be installed dry. Applying sealant can interfere with its performance and is generally not recommended unless specified by your engine's service manual.
How often should this gasket be replaced?
It's recommended to replace the exhaust riser gaskets whenever the exhaust risers or manifolds are serviced or replaced. In a saltwater environment, this is typically every 3-5 years as part of preventative maintenance.
Will this fit my V6 engine if the model number is not explicitly listed?
This gasket fits a very wide range of Volvo Penta V6 and V8 engines. However, to guarantee fitment, you must verify your engine model against the compatibility list or by cross-referencing your existing part number. Do not purchase if you are unsure.
Can I reuse my old riser bolts?
It is best practice to use new bolts when installing a new exhaust riser or gasket, as old bolts can stretch and corrode, leading to improper torque and potential leaks. Always follow the torque specifications in your service manual.
What is the difference between an OEM and an aftermarket part?
This listing is for a high-quality aftermarket replacement part, not an OEM component. It is engineered to meet or exceed OEM specifications using comparable materials and is manufactured in an ISO 9002 certified facility with rigorous quality control.
How fast do you ship and what does it cost?
We ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. Expedited shipping options, where available, 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 marine use. If you encounter an issue, 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 full policy page or contact us for 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 install.
- This is an aftermarket replacement part, not an OEM component from the engine manufacturer.
- Professional installation is strongly recommended for safety, performance, and to prevent engine damage.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and batch-tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with an average transit time of 5–15 days.
- Manufacturer-Direct Value — Our parts deliver fair pricing without compromising on materials or quality control.
Payment & Security
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