Thermostat Kit 165°F – Fits Volvo Penta (Replaces 875795)
Thermostat Kit 165°F – Fits Volvo Penta (Replaces 875795) 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).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Thermostat Kit 165°F – Fits Volvo Penta (Replaces 875795)
Product Details
A 165°F Thermostat Kit – Fits Volvo Penta (Replaces 875795) designed for Volvo Penta marine engines. This Sierra-manufactured aftermarket replacement thermostat kit maintains proper engine temperature for optimal performance and helps prevent overheating.
This kit is a direct interchange for Sierra part number 18-3556 and Volvo Penta part number 875795.
- Maintains engine operating temperature at 165°F (74°C).
- Designed for direct OEM replacement fitment.
- Includes thermostat and necessary gaskets for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 875795 |
| Sierra | 18-3556 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is a confirmed replacement for Volvo Penta OEM part 875795. Always verify against your specific engine model as detailed fitment lists are not available.
| Brand | OEM Part No. | Notes |
|---|---|---|
| Volvo Penta | 875795 | Sierra 18-3556 replacement |
Technical Specs
- Product Type
- Thermostat Kit
- Installation
- Direct OEM replacement
- Temperature Rating
- 165°F (74°C)
- Operating Temperature
- 165°F (74°C) opening temperature
- Dimensions
- 11.0" x 6.0" x 6.0"
- Other Technical Attributes
- Complete kit with necessary gaskets
What’s in the Box
- 1 x 165°F Thermostat
- Necessary gaskets for installation
Installation Notes
- Ensure the engine is completely cool before starting work.
- Locate and access the thermostat housing on the engine block or manifold.
- Drain enough coolant from the system to bring the level below the thermostat housing.
- Remove the bolts or nuts securing the housing cover.
- Carefully remove the old thermostat and gasket. Note the thermostat's orientation.
- Thoroughly clean both the housing and cover mating surfaces to remove old gasket material.
- Install the new thermostat, making sure it is oriented correctly.
- Place the new gasket onto the housing, aligning it with the bolt holes.
- Re-install the housing cover and tighten the bolts to the manufacturer's specified torque.
- Refill the cooling system with the appropriate coolant.
- Start the engine, let it warm up, and carefully check for any coolant leaks around the housing.
Troubleshooting & FAQ
How do I know if my thermostat has failed?
Common signs of a failed thermostat include engine overheating (if stuck closed) or taking too long to reach operating temperature (if stuck open). You may also notice erratic temperature gauge readings or coolant leaks around the housing.
Is this 165°F thermostat correct for my engine?
This is a 165°F (74°C) thermostat. While it replaces Volvo Penta 875795, it is critical to confirm the specified operating temperature for your specific engine model. Using the wrong temperature can affect performance and efficiency.
Can I reuse my old gasket?
No. It is essential to use the new gaskets provided in the kit to ensure a proper seal and prevent coolant leaks. Always replace gaskets when replacing the thermostat.
What is the difference between a raw water and fresh water cooling thermostat?
Thermostats for raw water (sea water) cooled engines often open at a lower temperature (like 165°F) to reduce the buildup of salt and minerals inside the engine passages. Fresh water (closed cooling) systems typically run hotter.
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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