Gates 34939 thermostat for the 2015 Volkswagen Golf 4-cylinder 2.0L and other vehicles regulates engine coolant temperature through an integrated housing. This engine coolant thermostat stays closed while the engine warms up, then opens to let coolant flow to the radiator.
- Integrated housing for accurate temperature regulation, to help the engine run efficiently
- All-in-one bolt-on unit with thermostat, insert, seal and housing
- Application-specific adaptive MAP-control for precise temperature regulation
- Thermostat starts to open at 197°F (92°C)
Quick facts
- Part: Gates 34939 thermostat
- Also called: engine coolant thermostat
- Fits: 2015 Volkswagen Golf 4-cylinder 2.0L and other vehicles
An engine that runs hot, warms up slowly or shows coolant seepage at the housing can mean the thermostat is failing. A low coolant level, a weak water pump or a faulty coolant temperature sensor can be behind those signs too, so find the cause before you buy a replacement.
Fits
This thermostat is a direct-fit replacement for the 2015 Volkswagen Golf 4-cylinder 2.0L and the 2015 Volkswagen Golf SportWagen 4-cylinder 2.0L, and it meets or exceeds OE standards for fit, form and performance. The 2015 Volkswagen Golf 4-cylinder 2.0L takes one, and so does the 2015 Volkswagen Golf SportWagen 4-cylinder 2.0L.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bolt holes: 4
- Seal quantity: 4
- Outlet inside diameter: 0.6 in, 0.58 in, 1.65 in, 1.5 in
- Outlet outside diameter: 0.8 in, 0.78 in, 2.15 in, 1.89 in
Build and materials
- Type: integrated housing thermostat
- Grade: OE Exact
- Start to open temperature: 197°F (92°C)
- Country of origin: China
In the box
One thermostat with its insert, seal and integrated housing. A jiggle pin check valve is not included.
Interchange: 04L121026Q
Frequently Asked Questions
Does this VW Golf thermostat fit the 2015 Golf 4-cylinder 2.0L?
Yes. Gates 34939 fits the 2015 Volkswagen Golf 4-cylinder 2.0L and the 2015 Volkswagen Golf SportWagen 4-cylinder 2.0L, one thermostat per engine.
Does the Gates 34939 housing come with the thermostat and seal?
Yes. It is an all-in-one bolt-on unit that includes the thermostat, insert, seal and housing. A jiggle pin check valve is not included.
At what temperature does the Gates 34939 thermostat start to open?
Gates 34939 starts to open at 197°F (92°C). It is a non-electric thermostat.
Which signs point to a failing integrated housing thermostat?
An engine that runs hot, warms up slowly or shows coolant seepage at the housing can be signs. With the engine cool, look at the housing for leaks; a shop can test the thermostat itself.
Is 04L121026Q the same part as the Gates 34939?
Yes. 04L121026Q is listed as an interchange number for Gates 34939, so you can use it to match this thermostat to the part you are replacing.
