Thermostat Kit 180°F (82°C) – Fits Volvo Penta 110-167 HP Sterndrive (Replaces 875580, 18-3666)

Thermostat Kit 180°F (82°C) – Fits Volvo Penta 110-167 HP Sterndrive (Replaces 875580, 18-3666)Thermostat Kit 180F (82C) Fits Volvo Penta 110 167 HP Sterndrive (Replaces 875580, 18 3666) This aftermarket thermostat kit is engineered to fit a wide range of Volvo Penta sterndrive engines from 110 HP to 167 HP, primarily those manufactured between 1975 1993. It ensures your engine maintains the correct operating temperature of 180F (82C) for optimal performance and longevity. This kit is a direct replacement for Volvo Penta 875580, Sierra 18 3666,

Thermostat Kit 180°F (82°C) – Fits Volvo Penta 110-167 HP Sterndrive (Replaces 875580, 18-3666)

This aftermarket thermostat kit is engineered to fit a wide range of Volvo Penta sterndrive engines from 110 HP to 167 HP, primarily those manufactured between 1975-1993. It ensures your engine maintains the correct operating temperature of 180°F (82°C) for optimal performance and longevity.

This kit is a direct replacement for Volvo Penta 875580, Sierra 18-3666, and Mallory 9-43010.

• Maintains engine temperature at 180°F (82°C).
• Includes thermostat and required seal ring/gasket for a complete installation.
• Designed as a direct-fit replacement for easy installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Thermostat (Replaces Volvo Penta 875580)
• 1 x Seal Ring/Gasket

Installation Guide

1. Safety First: Ensure the engine is completely cool before beginning. Disconnect the battery.
2. Locate Housing: Find the thermostat housing, typically connected to the main coolant hose on the engine block.
3. Drain Coolant: Place a container underneath and partially drain the coolant below the thermostat housing level.
4. Remove Housing: Loosen and remove the bolts securing the housing cover. Note their positions if they are different lengths.
5. Extract Old Thermostat: Carefully lift the housing cover. The old thermostat and its gasket should be visible. Remove both.
6. Clean Surfaces: Thoroughly clean the mating surfaces of the housing and its cover, removing all old gasket material and corrosion.
7. Install New Parts: Place the new thermostat into the housing, ensuring it is correctly oriented. Position the new gasket on top.
8. Reassemble: Re-place the housing cover and tighten the bolts evenly to the manufacturer's recommended torque. Do not overtighten.
9. Refill Coolant: Top off the coolant you drained earlier and check for leaks.
10. Test: Reconnect the battery. Start the engine and let it warm up, visually inspecting the housing for any signs of leakage.

Troubleshooting & FAQ

Q: How do I confirm this thermostat fits my engine?

A: The best method is to compare the part numbers listed (Volvo Penta 875580, Sierra 18-3666, Mallory 9-43010) with your existing part or service manual. You can also use the compatible engine models table on this page to check your specific model, HP, and year range.

Q: What are the signs of a failing thermostat?

A: Common symptoms include engine overheating (staying hot) or running too cold (not reaching operating temperature). You may see corresponding warnings on your dashboard gauges. A thermostat stuck open will prevent the engine from warming up, while one stuck closed will cause it to overheat quickly.

Q: What is the operating temperature of this thermostat?

A: This thermostat is rated to maintain an engine operating temperature of 180°F (82°C), which is the standard specification for the listed Volvo Penta models.

Q: Is this an OEM part?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.