{
    "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

Peterbilt 340 Thermostats

Refine by:

Shop Catalog

Showing 1 - 7 of 7 results
Sort by:
4072-90 HD Series Thermostat
Part Number: MRD4072-90
Vehicle Info Required to Guarantee Fit
$12.49
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 : 190 DegreesSeries : HD SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
4072-80 HD Series Thermostat
Part Number: MRD4072-80
Vehicle Info Required to Guarantee Fit
$12.99
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 : HD SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
33966 Gates OE Replacement Thermostat
Part Number: GAT33966
Vehicle Info Required to Guarantee Fit
$19.99
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 : 180 DegreesSeries : Gates OE ReplacementRecommended Use : OE Replacement
14978 Thermostat
Part Number: ST14978
Vehicle Info Required to Guarantee Fit
$25.49
Product Details
Quantity 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 Replacement
4071-80 HD Series Thermostat
Part Number: MRD4071-80
Vehicle Info Required to Guarantee Fit
$27.49
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 degrees FSeries : HD SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
4052-80 HD Series Thermostat
Part Number: MRD4052-80
Vehicle Info Required to Guarantee Fit
$54.99
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 degrees FSeries : HD SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
33959 Gates OE Replacement Thermostat
Part Number: GAT33959
Vehicle Info Required to Guarantee Fit
$70.49
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 : 181 degreesSeries : Gates OE ReplacementRecommended Use : OE Replacement
Page 1 of 1 | Showing 1 - 7 of 7 results

Popular Products

4072-90 HD Series Thermostat
Part No: MRD4072-90
( Review)
$12.49
33966 Gates OE Replacement Thermostat
Part No: GAT33966
( Review)
$19.99
14978 Thermostat
Part No: ST14978
( Review)
$25.49

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