{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
Select your vehicle

Workhorse W42 Thermostats

Refine by:

Shop Catalog

Showing 1 - 5 of 5 results
Sort by:
12TE1E Professional Series Thermostat
Part Number: AC12TE1E
Vehicle Info Required to Guarantee Fit
$6.99
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
12TE1B Professional Series Thermostat
Part Number: AC12TE1B
Vehicle Info Required to Guarantee Fit
$18.49
Product Details
Notes : Alternate 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 : 71 degrees CSeries : Professional SeriesInterchange Part Number : REPC318002Material : Stainless SteelRecommended Use : OE Replacement
34702 Gates OE Replacement Thermostat
Part Number: GAT34702
Vehicle Info Required to Guarantee Fit
$60.49
Product Details
Notes : 1.18 in. outlet ID; 1.55 in. outlet OD; Includes jiggle pin; With (1) seal and (2) bolt holes; Integrated housing thermostat typeQuantity Sold : Sold individuallyWarranty : Lifetime Gates 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.

Promotions : Cooling EssentialsOpening Temperature Rating : 187 degreesSeries : Gates OE ReplacementMaterial : Stainless SteelRecommended Use : OE Replacement
33009S Gates OE Replacement Thermostat
Part Number: GAT33009S
Vehicle Info Required to Guarantee Fit
$8.99
Product Details
Quantity Sold : Sold individuallyWarranty : Lifetime Gates 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.

Promotions : Cooling EssentialsOpening Temperature Rating : 195 degreesSeries : Gates OE ReplacementMaterial : Stainless SteelRecommended Use : OE Replacement
33963 Gates OE Replacement Thermostat
Part Number: GAT33963
Vehicle Info Required to Guarantee Fit
$9.49
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 : 186 degreesSeries : Gates OE ReplacementRecommended Use : OE Replacement
Page 1 of 1 | Showing 1 - 5 of 5 results

Top Rated Products

Worked Great
Jonathan C.
VERIFIED PURCHASER

Popular Products

34702 Gates OE Replacement Thermostat
Part No: GAT34702
( Review)
$60.49

Product Questions & Answers

Q:Does this thermostat stays open if it goes bad?
Crystal S.
A:BEST ANSWERHi Crystal, I'm glad to be of assistance to you. When the thermostat fails, it can either stay open or closed. If the thermostat is stuck in the open position, coolant flows continuously into the radiator, causing the engine to run cold. If interested in this part, use the link below to order at 49% off the regular price today while supplies last. I hope this is helpful. Enjoy your CarParts.com online shopping experience! https://www.carparts.com/thermostat/gates/gat33963?can=CPGG4850_CSQA_20230111 Show less
Grace G.
 
3 Questions, 1 AnswerView all Q&As >
Q:How do I know it's the thermostat that water   coolantis dripping out of the car? Show Less
Jeff G.
A:BEST ANSWERHello! The best way is to use a pressure tester to be able to identify where leaks are coming from. Show less
Mitchell D.
 
3 Questions, 1 AnswerView all Q&As >

Helpful Automotive Resources

What Does It Mean When the Engine Is Hot While the AC Is Off?
What Does It Mean When the Engine Is Hot While the AC Is Off?This is particularly problematic since hot engines are a lot more prone to overheating. If an engine overheats the odds of it breaking down and sustaining permanent damage increase exponentially. Potential Causes Of A Hot Engine If the AC is Off
What Does Check Gauges Mean?
What Does Check Gauges Mean?It can also mean that certain readings are reaching hazardous levels. For example, the check gauge light can illuminate once the PCM detects the temperature of your coolant is too high. However, take note that not all vehicles have a temperature gauge. Some only have a warning light that’s triggered
Where Is the Thermostat Located?
Where Is the Thermostat Located?In most Chevy Cruze models, you’ll find the thermostat in a housing under the top radiator hose. In most Nissan Frontier models, you can find the thermostat located behind the lower radiator hose, which you’ll have to remove to access the thermostat. A list of all the possible places where the