Gates Engine Coolant Thermostat P/N:34858
Gates 34838 thermostat for the 2012-2016 Volkswagen Passat 5-cylinder 2.5L and other vehicles regulates engine coolant temperature. This Gates thermostat comes as an integrated housing unit and helps engines run more efficiently through accurate temperature control.
A thermostat that sticks open or closed can show up as an engine that runs hot, warms up slowly or gives odd temperature gauge readings, and a leak at the housing is another sign. Before you replace it, rule out a coolant leak elsewhere or a faulty temperature sensor, since either can also throw off the gauge. Each engine takes one.
This integrated housing thermostat fits the 2012-2016 Volkswagen Passat 5-cylinder 2.5L, the 2005-2013 Volkswagen Jetta 5-cylinder 2.5L and the 2010-2014 Volkswagen Golf 5-cylinder 2.5L, and it meets or exceeds OE standards for fit, form and performance.
Fit and size
Build and materials
One integrated housing thermostat with insert, seal and jiggle pin check valve.
Interchange: 902-5156
1430908 · 85990 · TH6980 · TA3003 · 49677 · 07K121115C
This part cross-references / interchanges with the following part numbers:
Is this the right Volkswagen Jetta thermostat for a 2005-2013 5-cylinder 2.5L?
Yes. Gates 34838 is listed for the 2005-2013 Volkswagen Jetta 5-cylinder 2.5L. If your car is a different one, the "Vehicles it fits" section shows whether this part is listed for it.
Does this engine coolant thermostat include the housing and seal?
Yes. Gates 34838 is an integrated housing unit with the thermostat, insert and seal, and it also includes a jiggle pin check valve.
At what temperature does this thermostat start to open?
It starts to open at 80°C (176°F), the value listed for this part.
How do I know if this thermostat is wearing out?
Overheating, a slow-warming engine or a coolant leak at the housing can point to a worn thermostat. With the engine off and cool, look for coolant residue or crust around the housing and seal.
Is Gates 34838 a cross-reference for 07K121115C?
Yes. 07K121115C is one of the numbers this Gates 34838 replaces; the full list is on the Interchange line.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.