Circulation Pump Gasket – Fits Volvo Penta AQ165A/170A/B/C Engines (Replaces 430017)
Circulation Pump Gasket – Fits Volvo Penta AQ165A/170A/B/C Engines (Replaces 430017) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Circulation Pump Gasket – Fits Volvo Penta AQ165A/170A/B/C Engines ...
Product Details
This Circulation Pump Gasket creates a secure seal between the circulation pump and the cylinder block. It is designed specifically for Volvo Penta AQ165A, AQ170A, AQ170B, and AQ170C marine engines, as well as their BB-series counterparts.
This part is a direct interchange for Volvo Penta part number 430017 and Sierra part number 18-2518.
- Installs between the circulation pump and cylinder block.
- Engineered to prevent coolant leaks and maintain cooling system pressure.
- Includes one gasket per package.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 430017 |
| Sierra | 18-2518 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for specific Volvo Penta engines in the AQ and BB series.
| Brand | Model | OEM Part No. |
|---|---|---|
| Volvo Penta | AQ165A | 430017 |
| Volvo Penta | AQ170A | 430017 |
| Volvo Penta | AQ170B | 430017 |
| Volvo Penta | AQ170C | 430017 |
| Volvo Penta | BB165A | 430017 |
| Volvo Penta | BB170A | 430017 |
| Volvo Penta | BB170B | 430017 |
| Volvo Penta | BB170C | 430017 |
Technical Specs
- Product Type
- Circulation Pump Gasket
- Installation Location
- Between circulation pump and cylinder block
- Dimensions
- 18.0" L x 15.4" W x 0.1" H
- Package Quantity
- 1
What’s in the Box
- 1 x Circulation Pump Gasket (430017)
Installation Notes
- Disconnect the battery and drain the engine coolant into a suitable container.
- Remove any components obstructing access to the circulation pump.
- Carefully unbolt and remove the old circulation pump and gasket.
- Thoroughly clean both the cylinder block and pump mounting surfaces, ensuring they are free of old gasket material and debris.
- Position the new gasket onto the cylinder block.
- Reinstall the circulation pump, tightening bolts to the manufacturer’s specified torque in the correct sequence.
- Reconnect all hoses and components that were removed.
- Refill the cooling system with the appropriate coolant.
- Reconnect the battery, start the engine, and carefully check for leaks around the pump.
Troubleshooting & FAQ
How do I know if this gasket will fit my engine?
This gasket is specifically designed for the Volvo Penta engines listed in the compatibility table, including models AQ165A, AQ170A/B/C, and BB165A, BB170A/B/C. Always verify your engine model against our list before purchasing.
What are the signs of a failing circulation pump gasket?
Common signs include visible coolant leaks from the area between the pump and the engine block, engine overheating, and a consistently low coolant level without an obvious external leak. A stained or corroded surface around the pump housing can also indicate a slow leak.
Is any sealant required when installing this gasket?
Generally, modern gaskets like this are designed to be installed dry. However, always consult your engine's service manual. Some mechanics apply a very thin layer of gasket sealant as a precaution, but it is often not required if the mating surfaces are clean and smooth.
How often should the circulation pump gasket be replaced?
The gasket should be replaced any time the circulation pump is removed or replaced. There is no fixed service interval, but it should be inspected for leaks during routine engine maintenance.
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
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