Volvo Penta Mounting Kit HOT20931-MK – Fits AQ200D to 573A Engines (Replaces 835804, 855926, 856883)
Volvo Penta Mounting Kit HOT20931-MK – Fits AQ200D to 573A Engines (Replaces 835804, 855926, 856883) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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
Volvo Penta Mounting Kit HOT20931-MK – Fits AQ200D to 573A Engines ...
Product Details
This Volvo Penta Mounting Kit HOT20931-MK is designed for a range of Volvo Penta AQ and BB series marine engines, specifically compatible with GM 305/350 CID models manufactured up to 1993. It fits various series, including 200, 205, 211, 231, 225, 260, 271, 290, 311, 500, 501, 570, 571, and 572.
It serves as a direct replacement for Volvo Penta part numbers 835804, 855926, and 856883, and interchanges with Sierra 18-1931-1 and BARR MARINE VO-1-835804.
- Engineered for direct bolt-on installation.
- Suitable for gasoline (petrol) fuel type engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 835804 |
| Volvo Penta | 855926 |
| Volvo Penta | 856883 |
| Sierra | 18-1931-1 |
| BARR MARINE | VO-1-835804 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is compatible with select Volvo Penta gasoline engines manufactured up to 1993.
| Brand | Model | Years | OEM Part No. |
|---|---|---|---|
| Volvo Penta | AQ200D | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ200F | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ205 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ211 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ225D | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ225E | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ225F | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ231 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ260 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ271 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ290 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | AQ311 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB225 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB225AV | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB225B | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB231 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB260 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB260A | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB260AV | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB260B | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB260C | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | BB261 | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 500A | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 500B | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 501A | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 501B | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 570A | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 571A | Up to 1993 | 835804/855926/856883 |
| Volvo Penta | 572A | Up to 1993 | 835804/855926/856883 |
Technical Specs
- Product Type
- Engine Mounting Kit
- Installation
- Direct bolt-on replacement
- Fuel Type
- Gasoline (Petrol)
- Dimensions
- L: 53.0 cm, W: 9.0 cm, H: 4.0 cm
- Weight
- 0.6 kg (1.32 lbs)
- Other Technical Attributes
- For use with Volvo Penta AQ and BB series engines
Installation Notes
- Ensure the engine is properly supported and secured with a hoist or blocks before beginning.
- Disconnect any fuel lines, electrical wiring, or exhaust components attached to the engine mounts.
- Carefully unbolt and remove the old engine mounts. Note the position and orientation of all hardware.
- Clean the mounting surfaces on the engine block and boat stringers before positioning the new kit.
- Install the new mounting kit components, starting bolts by hand to prevent cross-threading.
- Tighten all mounting bolts to the manufacturer's recommended torque specifications.
- Reconnect all previously disconnected lines and wiring, ensuring secure connections.
- Lower the engine, remove supports, and perform a final check for alignment and security.
Troubleshooting & FAQ
How do I confirm this mounting kit fits my specific engine?
Verify your engine model and year falls within the compatibility list. The supported models are primarily Volvo Penta AQ and BB series with GM 305/350 CID engines made up to 1993. Cross-reference the OEM part numbers (835804, 855926, 856883) with your existing part to ensure an exact match.
What are common signs of a failing engine mount?
Symptoms of a worn or failed engine mount include excessive engine vibration felt throughout the boat, loud clunking or knocking sounds during startup or shutdown, and visible signs of cracking or perishing in the mount's rubber components.
Is any special hardware required for installation?
This kit is designed for bolt-on replacement and typically uses the original factory hardware. However, it is critical to inspect your existing bolts for corrosion or damage and replace them with equivalent grade hardware if necessary.
How often should engine mounts be replaced?
There is no fixed replacement interval, but engine mounts should be inspected annually for signs of wear, cracking, or oil contamination. Replacement is recommended if any degradation that could compromise engine stability is found.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
