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1991 GMC K1500
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1991 GMC K1500

1991 GMC K1500 Thermostats

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6-Piece Kit Radiator with Radiator Cap, Radiator Hose, Thermostat, and Thermostat Gasket, 5.7L Engine, Aluminum Core, Plastic Tank, 28 in. Core Width, Without Engine Oil Cooler
Replacement
6-Piece Kit Radiator with Radiator Cap, Radiator Hose, Thermostat, and Thermostat Gasket, 5.7L Engine, Aluminum Core, Plastic Tank, 28 in. Core Width, Without Engine Oil Cooler
Part Number: KIT-092023-06
Guaranteed to Fit
$157.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L For Models With 28 Inch Core, Without Engine Oil Cooler
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L For Models With 28 Inch Core, Without Engine Oil Cooler
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L For Models With 28 Inch Core, Without Engine Oil Cooler
Product Details
Notes : Cap - 16 lbs; Thermostat - 195 DegreesCore Dimensions : 28.25 x 17.25 x 1.25 in. Core SizeComponents : (1) Radiator, (1) Radiator Cap, (2) Radiator Hose, (1) Thermostat, and (1) Thermostat GasketAutomatic Transmission Cooler : With Transmission CoolerEngine Oil Cooler : Without Engine Oil CoolerInlet Size : 1.31 in. InletOutlet Location : Bottom right outletRecommended Use : OE ReplacementNumberof Rows : 1-Row CoreTank Material : Plastic TankCore Material : Aluminum CoreColor Finish : Factory FinishOutlet Size : 1.56 in. OutletInlet Location : Top left inletReplaces DPI Number : DPI# 618,631Product Fit : Direct FitQuantity Sold : KitWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead and lead compounds, 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.

Promotions : Collision Parts SavingsReturns Policy : 30-Day Return PolicyCore Height : 28 1/4 in.Core Width : 17 1/4 in.Core Thickness : 1 1/4 in.
6-Piece Kit Radiator with Radiator Cap, Radiator Hose, Thermostat, and Thermostat Gasket, 5.7L Engine, 28 in. Core Width, with Engine Oil Cooler
Replacement
6-Piece Kit Radiator with Radiator Cap, Radiator Hose, Thermostat, and Thermostat Gasket, 5.7L Engine, 28 in. Core Width, with Engine Oil Cooler
Part Number: KIT-092023-05
Guaranteed to Fit
$175.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L For Models With 28 Inch Core, With Engine Oil Cooler
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L For Models With 28 Inch Core, With Engine Oil Cooler
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L For Models With 28 Inch Core, With Engine Oil Cooler
Product Details
Notes : Cap - 16 lbs; Thermostat - 195 DegreesCore Dimensions : 28.25 x 17.25 x 1.25 in. Core SizeComponents : (1) Radiator, (1) Radiator Cap, (2) Radiator Hose, (1) Thermostat, and (1) Thermostat GasketAutomatic Transmission Cooler : With Transmission CoolerEngine Oil Cooler : With Engine Oil CoolerInlet Size : 1.31 in. InletOutlet Location : Bottom right outletRecommended Use : OE ReplacementNumberof Rows : 1-Row CoreTank Material : Plastic TankCore Material : Aluminum CoreColor Finish : Factory FinishOutlet Size : 1.56 in. OutletInlet Location : Top left inletReplaces DPI Number : DPI# 622Product Fit : Direct FitQuantity Sold : KitWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead and lead compounds, 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.

Promotions : 4th of July SaleReturns Policy : 30-Day Return PolicyCore Height : 28 1/4 in.Core Width : 17 1/4 in.Core Thickness : 1 1/4 in.
Thermostat
Motorad®
Thermostat
Part Number: MRD300-195
Guaranteed to Fit
$17.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 : 195 degreesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD200-160
Guaranteed to Fit
$15.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 degreesRecommended Use : OE Replacement
Gates OE Replacement Thermostat
Gates®
Gates OE Replacement Thermostat
Part Number: GAT33006
Guaranteed to Fit
$9.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L GAS, 160 Degree
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L GAS, 160 Degree
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L GAS, 160 Degree
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L GAS, 160 Degree
Product Details
Prop 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.

Promotions : Cooling EssentialsOpening Temperature Rating : 160 degreesSeries : Gates OE ReplacementRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD332-195
Guaranteed to Fit
$11.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 6.2L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 6.2L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 6.2L Temperature 195F; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 : 195 degreesRecommended Use : OE Replacement
High Flow Series Thermostat
Motorad®
High Flow Series Thermostat
Part Number: MRD2000-160
Guaranteed to Fit
$5.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 degreesSeries : High Flow SeriesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD200-195
Guaranteed to Fit
$7.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 : 195 degreesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD200-180
Guaranteed to Fit
$15.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 180F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 DegreesRecommended Use : OE Replacement
High Flow Series Thermostat
Motorad®
High Flow Series Thermostat
Part Number: MRD2000-195
Guaranteed to Fit
$6.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 : 195 degreesSeries : High Flow SeriesRecommended Use : OE Replacement
Professional Series Thermostat
AC Delco®
Professional Series Thermostat
Part Number: AC12TE1E
Guaranteed to Fit
$6.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L
Product Details
Notes : Aluminum engine; OEM recommended temperatureQuantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 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 : 91 degrees CSeries : Professional SeriesInterchange Part Number : REPC318003, 33009SMaterial : Stainless SteelRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD332-180
Guaranteed to Fit
$9.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 DegreesRecommended Use : OE Replacement
UltraStat Series Thermostat
Motorad®
UltraStat Series Thermostat
Part Number: MRD5200-160
Guaranteed to Fit
$8.99
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 160F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 160F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 degreesSeries : UltraStat SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
Fail-Safe Thermostat Series Thermostat
Motorad®
Fail-Safe Thermostat Series Thermostat
Part Number: MRD7200-195
Guaranteed to Fit
$12.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.0L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLX 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 6 Cyl 4.3L Temperature 195F; Oe Specified Temperature
  • 1991 GMC K1500 Sierra SLE 8 Cyl 5.7L Temperature 195F; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 : 195 degreesSeries : Fail-Safe Thermostat SeriesMaterial : Copper/Stainless SteelRecommended Use : OE Replacement
Fail-Safe Thermostat Series Thermostat
Motorad®
Fail-Safe Thermostat Series Thermostat
Part Number: MRD7332-180
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 1991 GMC K1500 Sierra 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLE 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
  • 1991 GMC K1500 Sierra SLX 8 Cyl 6.2L Temperature 180F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 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 DegreesSeries : Fail-Safe Thermostat SeriesRecommended Use : OE Replacement
Page 1 of 3 | Showing 1 - 15 of 37 results

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Product Questions & Answers

Motorad Fail-Safe Thermostat Series Thermostat
$12.49
Q:Will it work on my 1969 Dodge Dart GTS 383 engine?
Cleo M F.
A:BEST ANSWERHi Cleo, I'm glad to assist you. No, it won't. Click on the link below for the thermostats we have available for the 1969 Dart 383 models. I hope this helps, and happy shopping. https://www.carparts.com/search?q=thermostat&vehicle[cylinders]=8&vehicle[liter]=6%2E3&vehicle[submodel]=GTS&vehicle[model]=Dart&vehicle[make]=Dodge&vehicle[year]=1969 Show less
Arnel E.
 
1 Question, 1 AnswerView all Q&As >

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