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Volvo 8149182 is the sleeve type cooling system thermostat: a steel sleeve with a four spoke end plate and a central sensing element. It is used on Volvo D12 engines. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
The same part is also sold as Volvo 1544683 and Volvo 1676306.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Thermostat |
| Replaces | Volvo 8149182 |
| Type | Sleeve type thermostat |
| Cross references | Volvo 1544683, Volvo 1676306 |
| Fits | Volvo D12 engines, including EC360B and EC460B excavators |
| Condition | New, aftermarket |
| Stat. HS-Code | 848180 |
| Country of Manufacture | China |
Volvo machines
Check the part number on your old unit before ordering.
| Volvo Part No.(SPM Part No.) | Fits |
|---|---|
| 8149182(SPM-HEP-4033) | Volvo D12 engines, including EC360B and EC460B excavators |
| Brand | Part No. |
|---|---|
| Volvo | 8149182 (this page, SPM-HEP-4033) |
| Volvo | 1544683 |
| Volvo | 1676306 |
All of these numbers are the same part.
Engine running cold
A thermostat stuck open lets coolant bypass the warm-up stage: the temperature gauge stays low, the heater blows cool and fuel use goes up. Fit a new thermostat before the engine wears from running cold.
Engine overheating
A thermostat stuck closed stops coolant reaching the radiator and the engine overheats within minutes under load. Check the coolant level, fan belt and radiator first, then the thermostat.
Test before fitting
Heat the thermostat in water with a thermometer: it should start to open close to its rated temperature and open fully a little above it. Fit it the right way round, with the sensing end towards the engine.
Fitting tips
Drain the coolant below the housing, clean both faces, fit a new seal or gasket, and refill and bleed the cooling system to the machine's specification before running it up to temperature.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| G&T Engine Parts | USD 30.21 | 23 Oct 2026 |
| eBay (3 aftermarket sellers) | USD 36.40 to 152.99 | 25 Oct 2026 |
| FridayParts | USD 52.49 | 23 Oct 2026 |
| SAIL MARINE (Amazon) | USD 68.51 | 23 Oct 2026 |
| Spare Part Mart | USD 24.17 | Today |
Our price of USD 24.17 is 20% to 84% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Volvo 8149182. It is not made by or affiliated with Volvo; the Volvo part number is used only to show what it replaces.
It fits Volvo D12 engines, including EC360B and EC460B excavators. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It is made to the same mounting and connections as the original part. Fit new gaskets and seals where they are used, and check for leaks and correct operation before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
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