{
    "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
}
2021 GMC Sierra 3500 HD

2021 GMC Sierra 3500 HD Intake Manifold Gaskets

Refine by:

Shop Catalog

Showing 1 - 10 of 10 results
Sort by:
Intake Manifold Gasket, 8 Cyl., 6.6L Engine -
Part Number: AC12626354
Guaranteed to Fit
$14.99
Vehicle Fitment
  • 2021 GMC Sierra 3500 HD Base 8 Cyl 6.6L
  • 2021 GMC Sierra 3500 HD SLE 8 Cyl 6.6L
  • 2021 GMC Sierra 3500 HD SLT 8 Cyl 6.6L
  • 2021 GMC Sierra 3500 HD Denali 8 Cyl 6.6L
  • 2021 GMC Sierra 3500 HD AT4 8 Cyl 6.6L
Product Details
Series : GM Original Equipment SeriesQuantity Sold : SetWarranty : 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.

Gasket Material : Rubber gasket
Intake Manifold Gasket - Upper
Part Number: AC12642410
Guaranteed to Fit
$9.99
Vehicle Fitment
  • 2021 GMC Sierra 3500 HD All Submodels All Engines
Product Details
Location : UpperSeries : GM Original Equipment SeriesQuantity Sold : SetWarranty : 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.

Gasket Material : Rubber gasket
Intake Manifold Gasket, 8 Cyl., Engine Des: L8T, Engine Vin: 7 -
Part Number: AC12639086
Guaranteed to Fit
$9.99
Vehicle Fitment
  • 2021 GMC Sierra 3500 HD Base 8 Cyl 6.6L Engine Des: L8T, Engine Vin: 7
  • 2021 GMC Sierra 3500 HD SLE 8 Cyl 6.6L Engine Des: L8T, Engine Vin: 7
  • 2021 GMC Sierra 3500 HD SLT 8 Cyl 6.6L Engine Des: L8T, Engine Vin: 7
  • 2021 GMC Sierra 3500 HD Denali 8 Cyl 6.6L Engine Des: L8T, Engine Vin: 7
  • 2021 GMC Sierra 3500 HD AT4 8 Cyl 6.6L Engine Des: L8T, Engine Vin: 7
Product Details
Series : GM Original Equipment SeriesQuantity Sold : SetWarranty : 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.

Gasket Material : Rubber gasket
OE Replacement Series Intake Manifold Gasket - Set of 2
Part Number: W208985
Universal Fit
$15.36
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 2Warranty : 90 Day 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.

Gasket Material : Plastic gasket
OE Replacement Series Intake Manifold Gasket - Set of 2
Part Number: W208984
Universal Fit
$15.36
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 2Warranty : 90 Day 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.

Gasket Material : Plastic gasket
OE Replacement Series Intake Manifold Gasket - Set of 2
Part Number: W208990
Universal Fit
$15.76
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 2Warranty : 90 Day 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.

Gasket Material : Plastic gasket
OE Replacement Series Intake Manifold Gasket - Set of 2
Part Number: H19108119
Universal Fit
$34.10
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 2Warranty : 90-day Holley 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.

Gasket Material : Plastic gasket
OE Replacement Series Intake Manifold Gasket - Set of 8
Part Number: H1950822
Universal Fit
$44.26
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 8Warranty : 90-day Holley 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.

Gasket Material : Plastic gasket
OE Replacement Series Intake Manifold Gasket - Set of 8
Part Number: H1950823
Universal Fit
$49.80
Product Details
Series : OE Replacement SeriesQuantity Sold : Set of 8Warranty : 90-day Holley 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.

Gasket Material : Plastic gasket
SysteMax Ford 5.0 EFI Series Intake Manifold Gasket - Set
Part Number: H1910880
Universal Fit
$48.87
Product Details
Series : SysteMax Ford 5.0 EFI SeriesQuantity Sold : SetWarranty : 90-day Holley 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.

Page 1 of 1 | Showing 1 - 10 of 10 results

Popular Products

Helpful Automotive Resources

P0171 Code: System Too Lean (Bank 1)
P0171 Code: System Too Lean (Bank 1)A vehicle running on a lean mixture causes more pollution because it emits oxides of nitrogen (NOx) that are harmful to the environment. Lean vehicles also have a tendency to misfire as hydrocarbons from unburnt fuel reach the catalytic converters. When the ECM/PCM is having to add too much fuel based
A Short Course on Fuel Systems
A Short Course on Fuel SystemsThe most common fuels in use today are gasoline and diesel, however, a number of new fuels are hitting the market or show promise for the future. More on those alternative fuels at the end of this article.
A Short Course on Cooling Systems
A Short Course on Cooling SystemsToday’s cooling system must maintain the engine at a constant temperature whether the outside air temperature is 110 degrees Fahrenheit or 10 below zero. If the engine temperature is too low, fuel economy will suffer and emissions will rise. If the temperature is allowed to get too hot for too
Why Gaskets Are Important In an Engine
Why Gaskets Are Important In an EngineGaskets in cars play a critical role in keeping oil and coolant contained in their corresponding pressurized channels.