Gates Engine Coolant Thermostat P/N:33857

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$16.99
MPN: 33857
Item Package Quantity: 1
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Gates Engine Coolant Thermostat P/N:33857
Gates Engine Coolant Thermostat P/N:33857
$16.99

Keep engine temperature in check with the Gates Engine Coolant Thermostat 33857. It installs as a direct-fit replacement for the 1993-1995 Subaru Impreza, the 1990-1995 Subaru Legacy, and the 1992-1995 Subaru SVX, restoring the temperature-controlled coolant flow the cooling system depends on.

As the cooling system's temperature valve, the thermostat stays closed while the engine is cold so it can reach normal operating temperature, then opens to let coolant circulate to the radiator and regulate heat.

  • Temperature regulation: opens and closes to control coolant flow between the engine and radiator.
  • Faster warm-up: remains closed during cold start so the engine reaches operating temperature.
  • Direct-fit: designed to replace the original thermostat on the listed applications.

Signs this part may need replacing include an engine that runs hotter or colder than normal, slow warm-up, or a temperature gauge that swings — have the cause diagnosed before replacing, as these symptoms can have other sources. If a stuck thermostat is the cause, this replaces it.

Interchange: 143-0710 · 1430710 · 4147 · 7294-170 · 7294170 · 32637 · 14147 · TX14378D · 294-170 · 294170 · 110 · 133749 · 394-170 · 394170 · 494-170 · 494170 · 29147 · 35147 · 46147 · 21200AA000 · 21200AA070 · 21200AA071 · 21200AA170. Manufacturer part number 33857.

This part cross-references / interchanges with the following part numbers:

143-0710, 4147, 7294-170, 32637, 14147, TX14378D, 294-170, 110, 33857, 133749, 394-170, 494-170, 29147, 35147, 46147, 21200AA000, 21200AA070, 21200AA071, 21200AA170

Frequently Asked Questions

What does this thermostat do?

It is the cooling system's temperature valve. It stays closed while the engine is cold, then opens to let coolant flow to the radiator, helping regulate engine temperature.

Which vehicles does the Gates 33857 fit?

It is a direct-fit replacement for the 1993-1995 Subaru Impreza, 1990-1995 Subaru Legacy, and 1992-1995 Subaru SVX. Check the Buyer's Guide tab to confirm your vehicle.

What are the signs the thermostat may need replacing?

An engine running hotter or colder than normal, slow warm-up, or a temperature gauge that swings. Diagnose the cause first, since these symptoms can have other sources.

What numbers does this part interchange with?

It cross-references numbers including 143-0710, 4147, 7294-170, 32637, 14147, TX14378D, 294-170, 110, 133749, 394-170, 494-170, 29147, 35147, 46147, and 21200AA000/AA070/AA071/AA170.

Is this Gates thermostat the same as the manufacturer part number?

Yes. The manufacturer part number is 33857. The interchange numbers listed are the other brands' and OE equivalents it replaces.