875580 Thermostat Kit 180F 82C for Volvo Penta 110 117 120 125 138 146 167 HP Engine — Germany Local Warehouse
875580 Thermostat Kit 180F 82C for Volvo Penta 110 117 120 125 138 146 167 HP Engine — Germany Local Warehouse
Product Overview
Thermostat kit opening at 180 °F (82 °C), packed at 15 x 10 x 5 cm, supplied as one thermostat and one seal ring. It replaces Volvo Penta 875580, and fits Sierra 18-3666 and Mallory 43010 (9-43010). Fitment covers the 110, 117, 120, 125, 138, 146 and 167 HP engines. Shipped from our Germany local warehouse.
Raw water cooling on these engines is only as good as the thermostat that controls it. North Sea and Baltic water sits well below 82 °C even in summer, so a thermostat that hangs open keeps the block cold, the choke circuit thinks the engine is still warming up, and fuel consumption climbs while the gauge never reaches its normal mark.
The opposite failure is faster and more expensive. A thermostat stuck shut gives no warning beyond a rising gauge, and on a raw water engine the exhaust risers are the first thing to suffer. Either way the test is the same and it takes ten minutes in a pan of water.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Thermostat kit |
| Opening Temperature | 180 °F (82 °C) |
| Engine | Volvo Penta 110 HP to 167 HP |
| Quantity | 1 thermostat and 1 seal ring |
| Packaging Size | 15 x 10 x 5 cm (5.9 x 3.9 x 2.0 in) |
Cross Reference
| Brand | Part Numbers |
|---|---|
| Volvo Penta | 875580 |
| Sierra | 18-3666 |
| Mallory | 9-43010, 43010 |
Compatible Engines
| Brand | Horsepower | Years |
|---|---|---|
| Volvo Penta | 110 HP | 1977-1980 |
| Volvo Penta | 117 HP | 1983-1985 |
| Volvo Penta | 120 HP | 1985-1993 |
| Volvo Penta | 125 HP | 1975-1979 |
| Volvo Penta | 138 HP | 1979-1985 |
| Volvo Penta | 146 HP | 1985-1993 |
| Volvo Penta | 167 HP | As listed |
What's Included
| Component | Qty |
|---|---|
| Thermostat, 180 °F (82 °C) | 1 |
| Seal ring | 1 |
Stuck Open or Stuck Closed
| Symptom | Thermostat State | What You Notice |
|---|---|---|
| Gauge never reaches normal | Stuck open | Cold running, rich mixture, high fuel use |
| Gauge climbs fast under load | Stuck closed | Overheat within minutes, risers cook |
| Gauge swings up and down | Sticking part open | Uneven temperature, poor idle |
| Overheats only at speed | Not the thermostat | Check the impeller and the intake |
| Runs cold in spring only | Stuck open after lay-up | Corrosion on the seat over winter |
| No heat in the cabin heater | Stuck open | Engine below its design temperature |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Drain the cooling system below the housing level |
| 2 | Test the old thermostat in a pan of water before replacing it |
| 3 | Note the fitted orientation, the bleed hole goes to the top |
| 4 | Clean the housing faces and check for corrosion pitting |
| 5 | Fit the new thermostat with the new seal ring |
| 6 | Tighten the housing evenly, the casting is thin |
| 7 | Refill and run up to temperature with the cap off to bleed |
| 8 | Watch the gauge reach and hold its normal mark on the water |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Shipping from Germany
| Destination | Warehouse | Note |
|---|---|---|
| Germany | Germany local warehouse | Domestic delivery, no import duty |
| Austria, Netherlands, Belgium | Germany local warehouse | EU intra-community delivery |
| France, Italy, Spain, Poland | Germany local warehouse | EU intra-community delivery |
Before You Buy
- Match the engine horsepower and year to the table above
- Check the housing for corrosion before ordering
- Test the old thermostat in hot water first, it may not be the fault
- Fit the new seal ring with the thermostat, reusing the old one leaks
- This is the thermostat and seal, the housing is not included
- 30-Day Easy Returns
- Ships from our Germany local warehouse
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Before You Buy
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