Engine Assembly-Exhaust Manifold & Related Parts fit your 2021 GMC Sierra 3500 HD 4WD

Currently shopping for

2021 GMC Sierra 3500 HD 4WD

Change Vehicle

Categories Close X

Currently selected

Engine

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment

Brakes

Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers

Cooling System, Grille, Oil System

Frames, Springs, Shocks, Bumpers

Front Axle, Front Suspension, Steering

Front End Sheet Metal, Heater

Fuel System, Exhaust, Emission System

Maintenance Parts, Fluids, Capacities, Electrical Connectors

Rear Body Structure, Moldings & Trim, Cargo Stowage

Starter, Generator, Ignition, Electrical, Lamps

Transfer Case

Transmission - Automatic

Parts Questions

Sort by:

Recommended

Part No. & Part Description

Price & Qty.

Part No. &
Part Description

BOLT, Exhaust Manifold
11588714
BOLT, EXHAUST MANIFOLD LOWER HEAT SHIELD(M6X1X30)(8.900)
Require Quantity: 07
Package Quantity: 1
$9.71 $6.18
1
Add To Cart
11588714
BOLT, EXHAUST MANIFOLD HEAT SHIELD(M6X1X30)(8.900)
- Require Quantity: 09
- Package Quantity: 1
$9.71 $6.18
1
Add To Cart

11611143
STUD, Emission Control System, STUD,EGR VALVE(3.358)
- Require Quantity: 02
- Package Quantity: 1
$5.90 $3.75
1
Add To Cart

11612078
NUT, Exhaust Manifold Bolt, NUT,EXHAUST MANIFOLD(M8X1.25MM)(13MM SOCKET)(3.685)
- Require Quantity: 16
- Package Quantity: 1
$1.45 $0.97
1
Add To Cart

11546365
NUT, Emission Control System, NUT,EGR VALVE(M8X1.25 17.9 OUTSIDE DIAMETER)(3.346)
- Require Quantity: 02
- Package Quantity: 5
$2.21 $1.40
5
Add To Cart

11547207
RETAINER, Turbocharger/Supercharger, RETAINER,EXHAUST TURBO INLET PIPE(PART OF 2,8)
$7.49 $4.76
1
Add To Cart

11602016
BOLT, Exhaust Pipe, BOLT,EXHAUST TURBO INLET PIPE(3.680)
- Require Quantity: 12
- Package Quantity: 1
$13.40 $7.10
1
Add To Cart

11602016
BOLT, Emission Control System, BOLT,EGR VALVE(3.680)
- Require Quantity: 02
- Package Quantity: 1
$13.40 $7.10
1
Add To Cart

11602610
SPACER, Intake & Exhaust Manifold, SPACER,EXHAUST MANIFOLD STUD
- Require Quantity: 16
- Package Quantity: 1
$13.05
1
Add To Cart

11602757
STUD, Intake & Exhaust Manifold, STUD,EXHAUST MANIFOLD
- Require Quantity: 16
- Package Quantity: 1
$6.92 $4.39
1
Add To Cart

12675840
SENSOR, Computer Control Sensors, SENSOR,EGR COOLER TEMPERATURE (POSITION 1)(MATING CONNECT USE 19354079)
$94.88 $45.70
1
Add To Cart

MANIFOLD, Engine Exhaust Manifold
12676607
MANIFOLD, EXHAUST
Location: Passenger Side
Replaced By: 12708009
$103.70 $59.60
1
Add To Cart
12679988
MANIFOLD, EXHAUST
- Location: Driver Side
- Replaced By: 12708010
$114.61 $72.83
1
Add To Cart

12677819
GASKET, Emission System, GASKET,EGR VALVE
$36.84 $19.53
1
Add To Cart

SHIELD, Exhaust Manifold
12680294
SHIELD, EXHAUST MANIFOLD HEAT(REAR)
Location: Passenger Side
$58.98 $39.46
1
Add To Cart
12680295
SHIELD, EXHAUST MANIFOLD HEAT(FRONT)
- Location: Passenger Side
$16.33 $10.93
1
Add To Cart
12692265
SHIELD, EXHAUST MANIFOLD HEAT(REAR)
- Location: Driver Side
$62.54 $41.85
1
Add To Cart

SHIELD, Exhaust Pipe
12680298
SHIELD, EXHAUST PIPE HEAT
Location: Driver Side
$39.07 $26.15
1
Add To Cart
12680299
SHIELD, EXHAUST PIPE HEAT
- Location: Passenger Side
$15.14 $10.14
1
Add To Cart

PIPE, Exhaust Pipe
12681162
PIPE, EXHAUST TURBO INLET(INCLUDES 1,6,7)
Location: Driver Side
Fitting Vehicle Options: CK2,3(L5P)
Replaced By: 12688020
$184.47 $122.83
1
Add To Cart
12688021
PIPE, EXHAUST TURBO INLET(INCLUDES 1,6,7)
- Location: Passenger Side
- Fitting Vehicle Options: CK2,3(03-43-53)
$214.29 $142.69
1
Add To Cart

GASKET, Turbocharger/Supercharger

12688018
GASKET, EXHAUST TURBO INLET PIPE(PART OF 2,8)
$42.30 $25.56
1
Add To Cart
12688019
GASKET, EXHAUST TURBO INLET PIPE(PART OF 2,8)
$40.41 $24.41
1
Add To Cart

12689249
VALVE, Emission Control System, VALVE,EGR(SEE GROUP 03 "E.G.R. VALVE & RELATED PARTS" FOR DETAILED ILLUSTRATED VIEW)(MATING CONNECT USE 19354082)
- Replaced By: 12713478
$442.26 $212.99
1
Add To Cart

12705094
GASKET, Manifold to Cylinder Head, GASKET,EXHAUST MANIFOLD
- Require Quantity: 02
- Package Quantity: 1
$41.25 $25.86
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2021 GMC Sierra 3500 HD 4WD parts. Parts like Engine Assembly-Exhaust Manifold & Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 6.6L, 8 Cyl 6.6L Diesel. Model Code: CREW CAB 1 TON CHASSIS 137.0, CREW CAB 6'6" BOX 1 TON, CREW CAB 8' BOX 1 TON, EXTENDED CAB 8' BOX 1 TON, REGULAR CAB 1 TON CHASSIS 137.0, REGULAR CAB 1 TON CHASSIS 161.5, REGULAR CAB 8' BOX 1 TON.