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2018 GMC Sierra 2500 HD

2018 GMC Sierra 2500 HD Coolant Reservoir Caps

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Coolant Reservoir Cap - Sold individually
Part Number: ACRC118
Guaranteed to Fit
$7.49
Vehicle Fitment
  • 2018 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
  • 2018 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2018 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2018 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
Product Details
Warranty : 24-months or unlimited mile AC Delco 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.

Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: MRDT115
Guaranteed to Fit
$15.99
Vehicle Fitment
  • 2018 GMC Sierra 2500 HD Base 8 Cyl 6.6L Relief Pressure N/A; Replaces Cap Located on Reservoir; Top
  • 2018 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Relief Pressure N/A; Replaces Cap Located on Reservoir; Top
  • 2018 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Relief Pressure N/A; Replaces Cap Located on Reservoir; Top
  • 2018 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Relief Pressure N/A; Replaces Cap Located on Reservoir; Top
Product Details
Notes : 1.99 in. Overall Height; 1.19 in Filler Neck Inside Diameter; 1.92 in Cap DepthWarranty : 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.

Material : Plastic and RubberRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Black
Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: MRDT46
Guaranteed to Fit
$6.49
Vehicle Fitment
  • 2018 GMC Sierra 2500 HD Denali 8 Cyl 6.0L Relief Pressure 15 lb.; Replaces Cap Located On Reservoir
  • 2018 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Relief Pressure 15 lb.; Replaces Cap Located On Reservoir
  • 2018 GMC Sierra 2500 HD Base 8 Cyl 6.0L Relief Pressure 15 lb.; Replaces Cap Located On Reservoir
  • 2018 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Relief Pressure 15 lb.; Replaces Cap Located On Reservoir
Product Details
Notes : 16 PSI; 1.94 in. Width; 1.20 in Filler Neck Inside Diameter; 1.50 in Cap DepthWarranty : 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.

Material : Plastic and RubberRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Black
Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: MRDT62
Guaranteed to Fit
$10.99
Vehicle Fitment
  • 2018 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Relief Pressure 20 Lb; Replaces Cap Located on Reservoir; Side
  • 2018 GMC Sierra 2500 HD Base 8 Cyl 6.6L Relief Pressure 20 Lb; Replaces Cap Located on Reservoir; Side
  • 2018 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Relief Pressure 20 Lb; Replaces Cap Located on Reservoir; Side
  • 2018 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Relief Pressure 20 Lb; Replaces Cap Located on Reservoir; Side
Product Details
Notes : 20 PSI; 1.94 in. Width; Threaded Attachment TypeWarranty : 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.

Material : Plastic and RubberRecommended Use : OE ReplacementProduct Fit : Direct FitColor Finish : Black
GM Original Equipment Series Coolant Reservoir Cap - Direct Fit, Sold individually
Part Number: AC13502353
Guaranteed to Fit
$10.49
Vehicle Fitment
  • 2018 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2018 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2018 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2018 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Warranty : 24-months or unlimited mile AC Delco 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 : GM Original Equipment SeriesRecommended Use : OE ReplacementProduct Fit : Direct Fit
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Is Coolant the Same as Antifreeze? Plus Other Related Questions Answered
Is Coolant the Same as Antifreeze? Plus Other Related Questions AnsweredIf you go to purchase a gallon of coolant, there’s a good chance it will say anti-freeze/coolant on the side. Over the years, the automotive industry has adopted the trend of using these two terms interchangeably. But as was mentioned, anti-freeze is, in fact, one of the ingredients that make