AISIN Engine Coolant Thermostat P/N:THN-012
AISIN THN-008 engine coolant thermostat housing assembly for the 2002-2006 Nissan Altima V6 3.5L and other vehicles contains the thermostat that opens and closes to control coolant flow through the engine. It is OE engineered and manufactured for exact form, fit and function.
Coolant seepage around the housing, or an engine that runs hot or warms up slowly, can mean a worn thermostat or a leaking housing, but other cooling parts can show the same signs. With the engine off and cool, look the housing over for cracks and dried coolant residue before you replace it.
The 2002-2006 Nissan Altima V6 3.5L, the 2002-2008 Nissan Maxima V6 3.5L, the 2003-2007 Nissan Murano V6 3.5L and more all take this assembly, one per vehicle.
Fit and size
Build and materials
Interchange: 143-0815 · 21200-8J100 · 431-170 · 21200-8J10B · WH-NA-82
33951
This part cross-references / interchanges with the following part numbers:
Does the AISIN THN-008 thermostat housing assembly fit the 2002-2008 Nissan Maxima V6 3.5L?
Yes. AISIN THN-008 fits the 2002-2008 Nissan Maxima V6 3.5L. If your car is not named here, look it up on the Buyer's Guide tab.
Which engine is this AISIN coolant thermostat assembly listed for?
Every vehicle it fits is listed with the V6-3.5L engine, and the vehicle takes one assembly.
How do I check a thermostat housing assembly for a coolant leak?
With the engine off and cool, look at the housing and its joints for cracks, wet spots or dried coolant residue. A shop can pressure-test the system if no leak is visible.
Does AISIN THN-008 replace the number 21200-8J100?
Yes. 21200-8J100 is on the interchange list for AISIN THN-008, along with 143-0815 and 431-170.
Does the AISIN THN-008 include the thermostat, or is the housing sold alone?
AISIN THN-008 is a thermostat and housing assembly, so the thermostat comes together with the housing as one piece.
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.