Dorman 902-5873 engine coolant thermostat housing assembly for the 2013-2016 Audi RS5 V8 4.2L and other vehicles holds the thermostat that regulates coolant flow in the cooling circuit.
- Part of the Dorman OE Solutions line, standard replacement grade
- Plastic body designed to withstand extreme temperature changes and resist cracking and leaking
- Thermostat with a 221°F opening temperature
- Two outlet ports and three mounting holes
Quick facts
- Part: Dorman 902-5873 engine coolant thermostat housing assembly
- Fits: 2013-2016 Audi RS5 V8 4.2L and other vehicles
- Material: Plastic
- Condition: New
Coolant seepage at the housing, visible cracks or an engine running hotter than normal can mean the housing is worn, though a water pump or radiator cap can also be behind them, so find the actual cause before you replace anything.
Fits
Dorman 902-5873 directly replaces the original housing on the 2013-2016 Audi RS5 V8 4.2L, the 2011-2012 Audi A8 Quattro V8 4.2L and the 2008-2012 Audi S5 V8 4.2L, with a single housing needed on each.
Specifications
Fit and size
- Quantity per vehicle: 1
- Inside diameters: 0.8 in and 1.3 in
- Flange thickness: 0.4 in
- Flange length: 5.7 in
- Flange width: 5.3 in
- Bolt hole center to bolt hole center: 4.8 in and 5.2 in
Build and materials
- Material: Plastic
- Bleeder hole: none
- Condition: New
- Country of origin: Austria
In the box
One thermostat housing, one thermostat, one gasket and one sensor. Mounting hardware is not included, so plan on new bolts, since the old ones may not be reusable.
Interchange: 948-221
079121115AA · 079121115BB · 079121115BG · 079121115BJ
This part cross-references / interchanges with the following part numbers:
948-221, 079121115AA, 079121115BB, 079121115BG, 079121115BJ
Frequently Asked Questions
Does the Dorman engine coolant thermostat housing assembly fit the 2008-2012 Audi S5 V8 4.2L?
Yes. Dorman 902-5873 fits the 2008-2012 Audi S5 V8 4.2L, and that car takes one housing.
Does this Dorman engine coolant thermostat housing come with the thermostat and gasket?
Yes. Dorman 902-5873 comes with the thermostat, a gasket and a sensor. Mounting hardware is not included, so plan on new bolts.
What temperature does the thermostat in the Dorman OE Solutions engine coolant thermostat housing assembly open at?
The thermostat supplied with this housing opens at 221°F.
How can I tell if this plastic thermostat housing has cracked?
With the engine off and cool, look for cracks, coolant stains or dried residue around the housing and its gasket seam. If you can't see the source, a shop can test the cooling system.
Is 079121115BB an interchange number for the Dorman 902-5873 thermostat housing?
Yes. Dorman 902-5873 replaces that number, and it is printed on the Interchange line with the other numbers this housing replaces.
