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Stock factory thermostat is 195 Degree
Cooler engine temps reduce KR and promote cooler intake air temps. Our high flow thermostats feature openings 20% larger than stock for increased flow.
*This will fit all 1997 to 2008 Series II and III 3.8L 3800 Engines!
Both Naturally Aspirated and Supercharged 3800 engines.
Sample vehicle applications:
1997-2008 Pontiac Grand Prix 3.8L 3800 engines only
2000-2005 Pontiac Bonneville 3.8L 3800 engines only
1997-2005 Buick Regal
2000-2005 Buick Park Avenue
2000 to 2005 Chevy Impala 3.8L 3800 engines only
2000 to 2005 Chevy Monte Carlo 3.8L 3800 engines only
2000+ Buick Lesabre
*Thermostat housing bolts: 21 ft/lbs
*Does not fit the LS4 v8
Thanks for shopping!