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2003 Chevrolet Trailblazer EXT

2003 Chevrolet Trailblazer EXT Thermostat Housings

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Thermostat Housing, 8 Cyl., 5.3L Engine, with Thermostat, Gasket, For Models with Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
Part Number: REPC319601
Guaranteed to Fit
$13.05
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
Product Details
Notes : includes Thermostat, Housing, 1 GasketWarranty : 1-year Replacement unlimited-mileage warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Interchange Part Number : 902700, 12571261Replaces OE Number : 12571261Product Fit : Direct FitReturns Policy : 30-Day Return Policy
OE Solutions Series Thermostat Housing - Natural, Metal, Direct Fit, Sold individually
Part Number: RB902836
Guaranteed to Fit
$20.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Does Not Include Thermostat; Use If Original Water Pump Replaced With Later Design; Cover
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Does Not Include Thermostat; Use If Original Water Pump Replaced With Later Design; Cover
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Does Not Include Thermostat; Use If Original Water Pump Replaced With Later Design; Cover
Product Details
Location : UpperNotes : 0.31 in. Bolt Hole Diameter; 2 Bolt Holes; 30 degrees Housing Neck Angle; 1.64 in. Outlet DiameterWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, which is 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.

Series : OE Solutions SeriesInterchange Part Number : 85083, 34702, 524KT, CH2836, 815665, 12568911, 12581594, 12600172, 8125689110, 8125815940, 8126001720, 6261, 6261-TReplaces OE Number : 85083, 34702, 524KT, CH2836, 815665, 12568911, 12581594, 12600172, 8125689110, 8125815940, 8126001720, 6261, 6261-TMaterial : MetalRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Natural
OE Solutions Series Thermostat Housing - Natural, Aluminum, Direct Fit, Sold individually
Part Number: RB9022800
Guaranteed to Fit
$30.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Cover; 160 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Cover; 160 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Cover; 160 Degree Fahrenheit
Product Details
Notes : (1) Outlet Port Quantity; 2.89 in. Bolt Hole Center to Bolt Hole Center; 3.84 in. Flange Length; 0.36 in. Flange Thickness; 3.85 in. Flange Width; 1.07 in. Inside DiameterWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Replaces OE Number : 413-160, 12567750, 12572988, 12602913, 12620112, 24576961Material : AluminumRecommended Use : OE ReplacementBolt Hole Quantity : 2Product Fit : Direct FitOpening Temperature Rating : 160 degrees FSeries : OE Solutions SeriesThermostat Included : With thermostatInterchange Part Number : 413-160, 12567750, 12572988, 12602913, 12620112, 24576961Color Finish : Natural
OE Solutions Series Thermostat Housing - Natural, Metal, Direct Fit, Sold individually
Part Number: RB9022701
Guaranteed to Fit
$28.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 160 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 160 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 160 Degree Fahrenheit
Product Details
Notes : 1.24 in. ID; 4.39 in. Flange Length; 0.4 in. Flange Thickness; 2.7 in. Flange Width; (3) Bolt Hole Quantity; Gasket TypeWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Replaces OE Number : 85254, 379-160, 12571261, 8125712610Material : MetalRecommended Use : OE ReplacementProduct Fit : Direct FitIncludes : 1 Thermostat Housing; 1 Thermostat; 1 GasketOpening Temperature Rating : 160 degrees FSeries : OE Solutions SeriesThermostat Included : With thermostatInterchange Part Number : 85254, 379-160, 12571261, 8125712610Color Finish : Natural
UltraStat Series Thermostat Housing - Direct Fit, Kit
Part Number: MRD524KTUS
Guaranteed to Fit
$26.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : KitProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 187 degreesSeries : UltraStat SeriesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
Thermostat Housing - Direct Fit, Sold individually
Part Number: MRD413-160
Guaranteed to Fit
$22.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Temperature 160F; Alternate Temperature Option
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Temperature 160F; Alternate Temperature Option
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Temperature 160F; Alternate Temperature Option
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 160 degreesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
Thermostat Housing - Direct Fit, Kit
Part Number: MRD524KT
Guaranteed to Fit
$23.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : KitProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 187 degreesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
OE Solutions Series Thermostat Housing - Natural, Metal, Direct Fit, Sold individually
Part Number: RB902700
Guaranteed to Fit
$16.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 186 Degree Fahrenheit
Product Details
Notes : 0.38 in. Bolt Hole Diameter; 3 Bolt Holes; Gasket Included; 30 degrees Housing Neck Angle; 1.5 in. Outlet DiameterWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, which is 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.

Series : OE Solutions SeriesInterchange Part Number : JC319601, 37987, 85254, 85580, 33910, 14298, 379-160, 379-180, 379-187, 815254, 815580, 12571261, 8125712610, TG260T, 6260, 6260-T, KGT-379-160T, KGT-379-180T, KGT-379-187T, SK902700Replaces OE Number : 37987, 85254, 85580, 33910, 14298, 379-160, 379-180, 379-187, 815254, 815580, 12571261, 8125712610, TG260T, 6260, 6260-T, KGT-379-160T, KGT-379-180T, KGT-379-187T, SK902700Material : MetalRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Natural
OE Solutions Series Thermostat Housing - Natural, Aluminum, Direct Fit, Sold individually
Part Number: RB9022700
Guaranteed to Fit
$30.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 180 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 180 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L With Water Pump Casting No. 12562459; With Thermostat Retainer Brackets; 180 Degree Fahrenheit
Product Details
Notes : 1.3 in. ID; 4.38 in. Flange Length; 0.35 in. Flange Thickness; 2.75 in. Flange Width; (3) Bolt Hole Quantity; O-Ring Gasket TypeWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Replaces OE Number : 379-180, 12571261, 8125712610Material : AluminumRecommended Use : OE ReplacementProduct Fit : Direct FitIncludes : 1 Thermostat Housing; 1 Thermostat; 1 O-RingOpening Temperature Rating : 180 degrees FSeries : OE Solutions SeriesThermostat Included : With thermostatInterchange Part Number : 379-180, 12571261, 8125712610Color Finish : Natural
Thermostat Housing - Direct Fit, Sold individually
Part Number: MRD413-180
Guaranteed to Fit
$26.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Temperature 180F; With Housing, Thermostat, and Seal; Alternate Temperature Option
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Temperature 180F; With Housing, Thermostat, and Seal; Alternate Temperature Option
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Temperature 180F; With Housing, Thermostat, and Seal; Alternate Temperature Option
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 180 DegreesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
Fail-Safe Series Thermostat Housing - Direct Fit, Kit
Part Number: MRD524KTFS
Guaranteed to Fit
$59.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Temperature 187F; Oe Specified Temperature
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : KitProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 187 degreesSeries : Fail-Safe SeriesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
Thermostat Housing - Direct Fit, Sold individually
Part Number: MRDCH5096
Guaranteed to Fit
$16.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Recommended Use : OE ReplacementProduct Fit : Direct Fit
OE Solutions Series Thermostat Housing - Natural, Aluminum, Direct Fit, Sold individually
Part Number: RB9022131
Guaranteed to Fit
$26.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Cover; 180 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Cover; 180 Degree Fahrenheit
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Cover; 180 Degree Fahrenheit
Product Details
Notes : 1.1 in. ID; 3.82 in. Flange Length; 0.36 in. Flange Thickness; 2.8 in. Flange Width; (2) Bolt Hole Quantity; O-Ring Gasket TypeWarranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Replaces OE Number : 413-180, 12620112Material : AluminumRecommended Use : OE ReplacementProduct Fit : Direct FitIncludes : 1 Thermostat Housing; 1 Thermostat; 1 O-RingOpening Temperature Rating : 180 degrees FSeries : OE Solutions SeriesThermostat Included : With thermostatInterchange Part Number : 413-180, 12620112Color Finish : Natural
OE Solutions Series Thermostat Housing - Direct Fit, Sold individually
Part Number: RB9022836
Guaranteed to Fit
$54.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Use If Original Water Pump Replaced With Later Design
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Use If Original Water Pump Replaced With Later Design
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Without Water Pump Casting No. 12562459; Use If Original Water Pump Replaced With Later Design
Product Details
Warranty : Lifetime Dorman limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : OE Solutions SeriesInterchange Part Number : 85083, 34702, 524KT, 12568911, 12581594, 12600172, 12600178, 8125689110, 8125815940, 8126001720Replaces OE Number : 85083, 34702, 524KT, 12568911, 12581594, 12600172, 12600178, 8125689110, 8125815940, 8126001720Recommended Use : OE ReplacementProduct Fit : Direct Fit
Thermostat Housing - Direct Fit, Sold individually
Part Number: MRD413-192
Guaranteed to Fit
$21.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Temperature 192F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Temperature 192F; Oe Specified Temperature
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Temperature 192F; Oe Specified Temperature
Product Details
Warranty : 12-month Motorad limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Opening Temperature Rating : 192 degreesThermostat Included : With thermostatRecommended Use : OE ReplacementProduct Fit : Direct Fit
Page 1 of 2 | Showing 1 - 15 of 20 results

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Very pleased with the thermostat and housing. Perfect fit. Identical to the original See More
Frank D.
VERIFIED PURCHASER

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Helpful Automotive Resources

Thermostat Housing: Leak Causes, Replacement Cost, Symptoms
Thermostat Housing: Leak Causes, Replacement Cost, SymptomsCoolant will also leak out of the system once the housing is cracked, warped, or damaged in any way. A failed or worn seal may also cause a similar issue. Your engine may overheat if your thermostat housing keeps on leaking, so it’s best to address this issue right away. The