{
    "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
}
2015 GMC Sierra 2500 HD
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
2015 GMC Sierra 2500 HD

2015 GMC Sierra 2500 HD Exhaust Manifolds

Refine by:

Shop Catalog

Showing 1 - 15 of 21 results
Display item:
15
30
45
Sort by:
Exhaust Manifold, 8 Cyl., 6.0L Engine
Davico®
Exhaust Manifold, 8 Cyl., 6.0L Engine
Part Number: DAV663227
Guaranteed to Fit
$77.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
Product Details
Location : Passenger SideNotes : 13 in. W x 5.1 in. H; 23.2 in. Inlet GasketIncludes : GasketEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : Sold individuallyWarranty : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 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 : Exact Fit Series
Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
Dorman®
Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
Part Number: RB674522
Guaranteed to Fit
$111.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Without Ceramic Coating
Product Details
Location : Driver SideNotes : Cast iron materialIncludes : Three studs, three nuts, and one manifold gasketEmissions : 50-State LegalQuantity Sold : KitWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, 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 : OE Solutions SeriesInterchange Part Number : REPC960702, 101261, 663017, 12556078, 12562235, 12562330, 12564155, 12571678, 12602037, 12610962, 12616285, 12686303Replaces OE Number : 101261, 663017, 12556078, 12562235, 12562330, 12564155, 12571678, 12602037, 12610962, 12616285, 12686303
Exhaust Manifold, 8 Cyl., 6.0L Engine - Driver and Passenger Side
Dorman®
Exhaust Manifold, 8 Cyl., 6.0L Engine - Driver and Passenger Side
Part Number: SET-RB674732
Guaranteed to Fit
$267.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
Product Details
Location : Driver and Passenger SideNotes : Set Components - (2) Exhaust Manifold KitQuantity Sold : Set of 2Warranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, 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.

Interchange Part Number : C960707, 674525, 101371, 663227, 12569416, 12569530, 12578341, 12602038, 12612084, 12616286, 12647717, 12648339, 12677665, 12686302, REPC960702, 101261, 663017, 12556078, 12562235, 12562330, 12564155, 12571678, 12602037, 12610962, 12616285, 12686303Replaces OE Number : 101261, 663017, 12556078, 12562235, 12562330, 12564155, 12571678, 12602037, 12610962, 12616285, 12686303, 101371, 663227, 12569416, 12569530, 12578341, 12602038, 12612084, 12616286, 12647717, 12648339, 12677665, 12686302
Exhaust Manifold, 8 Cyl., 6.0L Engine
AC Delco®
Exhaust Manifold, 8 Cyl., 6.0L Engine
Part Number: AC12616285
Guaranteed to Fit
$159.49
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L 97.6 in. Bed, Fleetside, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
Product Details
Location : Driver SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.6L Engine
Davico®
Exhaust Manifold, 8 Cyl., 6.6L Engine
Part Number: DAV663231
Guaranteed to Fit
$67.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Location : Passenger SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : Sold individuallyWarranty : 1-year Davico 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.

Series : Exact-Fit Series
Exhaust Manifold, 8 Cyl., 6.6L Engine, DIESEL, Rear Wheel Drive/DIESEL
ATP®
Exhaust Manifold, 8 Cyl., 6.6L Engine, DIESEL, Rear Wheel Drive/DIESEL
Part Number: ATP101721
Guaranteed to Fit
$201.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L DIESEL, RWD
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L DIESEL, RWD
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L DIESEL, RWD
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L DIESEL, 4WD
Product Details
Location : Driver SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : Sold individuallyWarranty : Lifetime ATP Graywerks 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.

Exhaust Manifold, 8 Cyl., 6.0L Engine
AC Delco®
Exhaust Manifold, 8 Cyl., 6.0L Engine
Part Number: AC12677665
Guaranteed to Fit
$258.49
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 4-Door, Extended Cab Pickup, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 4-Door, Crew Cab Pickup, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 4-Door, Crew Cab Pickup, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L 78.8 in. Bed, Fleetside, 4-Door, Crew Cab Pickup, 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, Fleetside Pubx(E63)
Product Details
Location : Passenger SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.6L Engine
AC Delco®
Exhaust Manifold, 8 Cyl., 6.6L Engine
Part Number: AC12637647
Guaranteed to Fit
$404.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Location : Driver SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.6L Engine
AC Delco®
Exhaust Manifold, 8 Cyl., 6.6L Engine
Part Number: AC12624683
Guaranteed to Fit
$369.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Location : Passenger SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.0L Engine, 6-Speed, Automatic Transmission, Transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
AC Delco®
Exhaust Manifold, 8 Cyl., 6.0L Engine, 6-Speed, Automatic Transmission, Transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
Part Number: AC12686302
Guaranteed to Fit
$673.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
Product Details
Location : Passenger SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.6L Engine
Davico®
Exhaust Manifold, 8 Cyl., 6.6L Engine
Part Number: DAV663226
Guaranteed to Fit
$67.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Location : Driver SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : Sold individuallyWarranty : 1-year Davico 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.

Series : Exact-Fit Series
Exhaust Manifold, 8 Cyl., 6.0L Engine
Davico®
Exhaust Manifold, 8 Cyl., 6.0L Engine
Part Number: DAV663017
Guaranteed to Fit
$69.49
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L
Product Details
Location : Driver SideNotes : 14.6 in. W x 5.5 in. H; 20 in. Inlet GasketIncludes : GasketEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : Sold individuallyWarranty : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 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 : Exact Fit Series
Exhaust Manifold, 8 Cyl., 6.0L Engine, 6-Speed, Automatic Transmission, Transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
AC Delco®
Exhaust Manifold, 8 Cyl., 6.0L Engine, 6-Speed, Automatic Transmission, Transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
Part Number: AC12686303
Guaranteed to Fit
$558.49
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90, BASE BODY/CHASSIS(ZW9)
Product Details
Location : Driver SideEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity 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.

Series : GM Original Equipment Series
Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
Dorman®
Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
Part Number: RB674732
Guaranteed to Fit
$169.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.0L Without Ceramic Coating
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.0L Without Ceramic Coating
Product Details
Location : Passenger SideNotes : Cast iron material; Round Inlet Port ShapeIncludes : 1 Manifold Gasket, 2 Flange Gaskets, 3 Studs, 3 NutsEmissions : 46-State Legal (Cannot ship to CA, CO, NY or ME)Quantity Sold : KitWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, 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 : OE Solutions SeriesInterchange Part Number : C960707, 674525, 101371, 663227, 12569416, 12569530, 12578341, 12602038, 12612084, 12616286, 12647717, 12648339, 12677665, 12686302Replaces OE Number : 101371, 663227, 12569416, 12569530, 12578341, 12602038, 12612084, 12616286, 12647717, 12648339, 12677665, 12686302
Exhaust Manifold, 8 Cyl., 6.6L Engine
Dorman®
Exhaust Manifold, 8 Cyl., 6.6L Engine
Part Number: RB674731
Guaranteed to Fit
$79.99
Vehicle Fitment
  • 2015 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2015 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Product Details
Location : Driver SideNotes : Cast iron materialEmissions : 50-State LegalQuantity Sold : KitWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, 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 : OE Solutions SeriesInterchange Part Number : 12624684, 12637647, 97224587Replaces OE Number : 12624684, 12637647, 97224587
Page 1 of 2 | Showing 1 - 15 of 21 results

Top Rated Products

Davico Exhaust Manifold, 8 Cyl., 6.0L Engine
$77.99( Review)
Perfect fit, fixed all O2 sensors codes, easy to install. Truck runs super quite now.See More
Kenya G.
VERIFIED PURCHASER
Dorman Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
$111.99( Review)
I liked everything about This product! Came with everything i needed with and very eaSee More
Austin M.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Dorman Exhaust Manifold, 8 Cyl., 6.0L Engine, without Ceramic Coating
$169.99
Q:I cant seem to find manifold bolts. Do you sell em?
Mary T.
A:BEST ANSWERHi Mark, Yes, we do sell them depending on the availability and fitment. Check Intake Manifold Bolt Set under the year, make, model, submodel, and engine size of the vehicle. Show less
Grace G.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
P0058 Code: HO2S Heater Control Circuit High (Bank 2, Sensor 2)
P0058 Code: HO2S Heater Control Circuit High (Bank 2, Sensor 2)Many oxygen sensors also have a heating element that helps bring the sensor up to operating temperature quicker. These sensors need the heating element because they produce more accurate readings when brought up to a certain temperature. Once the sensors are up to operating temperature, they send exhaust oxygen data
P0080 Code: Exhaust Valve Control Solenoid Circuit High Bank 1
P0080 Code: Exhaust Valve Control Solenoid Circuit High Bank 1On vehicles equipped with variable valve timing (VVT), the PCM can adjust the camshaft position, altering the timing of the exhaust and/or intake valves. The PCM controls the camshaft position by regulating oil flow (via a solenoid) to the actuator(s) mounted on the end of the camshaft(s).
P0411 Code: Secondary Air Injection Incorrect Flow Detected
P0411 Code: Secondary Air Injection Incorrect Flow DetectedAs was mentioned, the secondary air injection system reduces emissions by introducing fresh air into the exhaust system. Older vehicles have a belt-driven air pump while newer models have an electric pump. Code P0411 may get registered when the amount of air entering the exhaust is not what the powertrain