Description
Warranty & Shipping
How-To & Tools
Product Reviews
Q&A
Vehicle Fit

If your car is leaking coolant around the thermostat, or your thermostat housing is broken or cracked, then this could be your solution.

Specifications:

  • Engine Water Outlet
  • Aluminum construction
  • Includes thermostat (stock temperature, 187 degrees)
  • Direct replacement
  • Built to strict quality control standards
  • 2.02" (51mm) diameter opening
    • Not correct for models with 1.88" (48mm) thermostat opening

Over time from thermal expansion and contraction the mating surfaces on the housing can warp or crack. If you are experiencing any of these issues replace your thermostat housing with our direct replacement part.

Item Condition: New

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Draining the Coolant (0:42)
    • Twist off the coolant tank cap
    • Have a drain pan ready
    • Twist off the drain plug
    • Allow the coolant to drain
    • Twist on the drain plug
  2. step : Removing the Air Intake Hose (1:23)
    • Loosen the two air intake hose clamps with a flat blade screwdriver
    • Pull off both ends of the intake hose
    • Pull the intake hose up and out
  3. step : Removing the Thermostat (1:46)
    • Have a drain pan ready
    • Loosen the radiator hose clamp with pliers
    • Slide the clamp back
    • Pry the hose off with a pry bar
    • Remove the two 10mm bolts from the thermostat
    • Pull off the thermostat
    • Clean the thermostat housing with fine sandpaper
  4. step : Installing the New Thermostat (2:58)
    • Push the new thermostat into place
    • Insert the two 10mm bolts into the thermostat
    • Tighten the 10mm bolts to between 15 - 17 foot-pounds of torque
    • Push the radiator hose onto the thermostat
    • Slide the hose clamp on using pliers
  5. step : Reinstalling the Air Intake Hose (4:01)
    • Push the intake hose into place
    • Push the smaller hose into the intake hose
    • Tighten the two hose clamps with a flat blade screwdriver
  6. step : Refilling the Coolant (4:47)
    • Fill the coolant tank to the max fill line, using a funnel
    • Run the engine briefly
    • Add more coolant if necessary
    • Twist on the coolant tank cap

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Slip-Joint Pliers

  • Ratchets & Related

  • Ratchet
  • Torque Wrench

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Pry Bar

  • Sockets - Metric

  • 10mm Socket

5.00/ 5.0
1review
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Exact part and on time
I will chose this store first in the future. Used a big box store and they sold me the wrong part that cost me time and a second fluid flush. Entered the same data into A1auto and got the correct part on time and a good price.
January 29, 2017
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
05 tahoe over heating. But when I Turn on heater the engine temp goes down. Is the thermostat bad??
Oscar T April 9, 2018
Will it fit the acdelco water pump and does it come with gasket?
EDDIE F April 18, 2018
How do I determine if I have the 51mm or 48mm diameter inlet?
David M October 4, 2018
I actually watched a couple YouTube videos and found the size there also Google the schematics for the vehicle
Shawne C October 4, 2018
Match up the housing/thermostat with your factory one you are replacing. Unless your getting a new water pump it should say what size you need. Bye the thermostat housings are different between the two sizes
Josh H October 4, 2018
8th number/letter of the VIN number
M L October 4, 2018
Use calipers Draw and cut out a template , cardboard or paper But both and return the one not needed Use your vin number and search on internet
S T October 4, 2018
You should be able to call your local dealer with the VIN number and they will be able to assist you with this information.
Christa R October 4, 2018
Year Make Model Description
2002-2003Cadillac Escalade Cadillac Escalade Thermostat with Housing Assembly V8 6.0L (8th Vin Digit N)
2002-2003Cadillac Escalade Cadillac Escalade Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2003Cadillac Escalade ESV Cadillac Escalade ESV Thermostat with Housing Assembly V8 6.0L (8th Vin Digit N)
2002-2003Cadillac Escalade EXT Cadillac Escalade EXT Thermostat with Housing Assembly V8 6.0L (8th Vin Digit N)
2002-2005Chevy Avalanche 1500 Chevy Avalanche 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2005Chevy Avalanche 1500 Chevy Avalanche 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
1998-2002Chevy Camaro Chevy Camaro Thermostat with Housing Assembly V8 5.7L (8th Vin Digit G)
1997-2003Chevy Corvette Chevy Corvette Thermostat with Housing Assembly V8 5.7L (8th Vin Digit G)
2003-2006Chevy Express 1500 Van Chevy Express 1500 Van Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2003-2006Chevy Express 2500 Van Chevy Express 2500 Van Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2003-2006Chevy Express 2500 Van Chevy Express 2500 Van Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2003-2005Chevy Express 2500 Van Chevy Express 2500 Van Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2003-2006Chevy Express 3500 Van Chevy Express 3500 Van Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2005-2006Chevy Express 3500 Van Chevy Express 3500 Van Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2003Chevy SSR Chevy SSR Thermostat with Housing Assembly V8 5.3L (8th Vin Digit P)
1999-2006Chevy Silverado 1500 Chevy Silverado 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
1999-2006Chevy Silverado 1500 Chevy Silverado 1500 Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2002-2006Chevy Silverado 1500 Chevy Silverado 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2003-2006Chevy Silverado 1500 Chevy Silverado 1500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit N)
2001-2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2005-2006Chevy Silverado 1500 HD Chevy Silverado 1500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
1999-2000Chevy Silverado 2500 Chevy Silverado 2500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
1999-2004Chevy Silverado 2500 Chevy Silverado 2500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2001-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2001-2006Chevy Silverado 3500 Chevy Silverado 3500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2000-2005Chevy Suburban 1500 Chevy Suburban 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2002-2006Chevy Suburban 1500 Chevy Suburban 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2006Chevy Suburban 1500 Chevy Suburban 1500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2000-2006Chevy Suburban 2500 Chevy Suburban 2500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2000-2006Chevy Tahoe Chevy Tahoe Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2000-2006Chevy Tahoe Chevy Tahoe Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2002-2006Chevy Tahoe Chevy Tahoe Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2003Chevy Trailblazer EXT Chevy Trailblazer EXT Thermostat with Housing Assembly V8 5.3L (8th Vin Digit P)
2005-2006GMC Envoy GMC Envoy Thermostat with Housing Assembly V8 5.3L (8th Vin Digit M)
2003-2004GMC Envoy XL GMC Envoy XL Thermostat with Housing Assembly V8 5.3L (8th Vin Digit P)
2003-2006GMC Savana 1500 Van GMC Savana 1500 Van Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2003-2006GMC Savana 2500 Van GMC Savana 2500 Van Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2003-2005GMC Savana 2500 Van GMC Savana 2500 Van Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2004-2006GMC Savana 2500 Van GMC Savana 2500 Van Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2003-2006GMC Savana 3500 Van GMC Savana 3500 Van Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2004-2006GMC Savana 3500 Van GMC Savana 3500 Van Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
1999-2006GMC Sierra 1500 GMC Sierra 1500 Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
1999-2006GMC Sierra 1500 GMC Sierra 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2001GMC Sierra 1500 GMC Sierra 1500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2002-2006GMC Sierra 1500 GMC Sierra 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
1999-2000GMC Sierra 2500 GMC Sierra 2500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
1999-2004GMC Sierra 2500 GMC Sierra 2500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2001-2006GMC Sierra 2500 HD GMC Sierra 2500 HD Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2001-2006GMC Sierra 3500 GMC Sierra 3500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2000-2006GMC Yukon GMC Yukon Thermostat with Housing Assembly V8 4.8L (8th Vin Digit V)
2000-2006GMC Yukon GMC Yukon Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2001-2006GMC Yukon GMC Yukon Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2002-2006GMC Yukon GMC Yukon Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2000-2005GMC Yukon XL 1500 GMC Yukon XL 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit T)
2000-2006GMC Yukon XL 1500 GMC Yukon XL 1500 Thermostat with Housing Assembly V8 5.3L (8th Vin Digit Z)
2000-2006GMC Yukon XL 2500 GMC Yukon XL 2500 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2003-2007Hummer H2 Hummer H2 Thermostat with Housing Assembly V8 6.0L (8th Vin Digit U)
2003Isuzu Ascender Isuzu Ascender Thermostat with Housing Assembly V8 5.3L (8th Vin Digit P)
1998-2002Pontiac Firebird Pontiac Firebird Thermostat with Housing Assembly V8 5.7L (8th Vin Digit G)
Part #: 1AEMX00299


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(05:22 min)