Engine Assembly-Cylinder Block & Related Parts fit your 2021 GMC Sierra 3500 HD 4WD

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2021 GMC Sierra 3500 HD 4WD

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Part No. & Part Description

Price & Qty.

Part No. &
Part Description

BOLT, Distributor (also Knock Sensor)
11588711
BOLT, CRANKSHAFT POSITION SENSOR(M6X1X16, 14.2 OUTSIDE DIAMETER)(HEX FLANGED HEAD)(10 THREAD, 8.8 STEEL)(8.900)
Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
$7.39 $4.69
1
Add To Cart
11588722
BOLT, CRANKSHAFT POSITION SENSOR(M8X20)(3.675)
- Fitting Vehicle Options: CK2,3(03-43-53)
$0.23 $0.14
1
Add To Cart
11588722
BOLT, KNOCK SENSOR SHIELD(M8X20)(3.675)
- Fitting Vehicle Options: CK2,3(03-43-53)
$0.23 $0.14
1
Add To Cart
55585169
BOLT, CRANKSHAFT POSITION SENSOR RELUCTOR RING(PART OF 35)
- Fitting Vehicle Options: CK2,3(03-43-53)
- Require Quantity: 03
- Package Quantity: 1
$2.38 $1.51
1
Add To Cart
11561256
BOLT, KNOCK SENSOR(PART OF 13)(M8X1.25X39)(8.900)
- Fitting Vehicle Options: CK2,3(03-43-53)

12589016
RETAINER, Engine Camshaft, RETAINER,CAMSHAFT(INCLUDES SEAL)
$36.79 $22.22
1
Add To Cart

11515758
BOLT, Engine Timing, BOLT,TIMING CHAIN TENSIONER(PART OF 36)(M8X1.25X30)(8.900)
- Require Quantity: 02
- Package Quantity: 10
$1.86 $1.12
10
Add To Cart

BOLT, Engine Clutch Housing
11515781
BOLT, FLYWHEEL HOUSING(M12X1.75X60,30 THREAD)(FLANGE)(8.900)
Require Quantity: 04
Package Quantity: 5
$7.18 $4.56
5
Add To Cart
11548907
BOLT, FLYWHEEL HOUSING
$4.74 $3.01
1
Add To Cart

PLUG, Engine Block
11588468
PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M10X1.5X15)(4.115)
Fitting Vehicle Options: CK2,3(L5P)
Require Quantity: 02
Package Quantity: 10
$1.47 $0.94
10
Add To Cart
11611351
PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M28X1.25X13)(8.971)
- Fitting Vehicle Options: CK2,3(L8T)
$23.11 $13.96
1
Add To Cart
11546667
PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(M16X1.5X16.25)
- Fitting Vehicle Options: CK2,3(L8T)
$7.03 $4.46
1
Add To Cart
94399639
PLUG, ENGINE BLOCK COOLANT DRAIN HOLE(OUTSIDE DIAMETER=40MM)
- Fitting Vehicle Options: CK2,3(L5P)
- Require Quantity: 07
- Package Quantity: 30
$7.03 $4.46
30
Add To Cart

12630107
TENSIONER KIT, Engine Timing, TENSIONER KIT,TIMING CHAIN(INCLUDES 33-35)(CAM DRIVE)
$59.28 $39.74
1
Add To Cart

12646386
CHAIN, Engine Timing, CHAIN,CAMSHAFT TIMING
$93.51 $62.68
1
Add To Cart

BEARING KIT, Engine Connecting Rod
12683811
BEARING KIT, CONNECT ROD
Fitting Vehicle Options: CK2,3(L8T,MYD)
$12.12 $9.70
1
Add To Cart
12685817
BEARING KIT, CONNECT ROD
- Fitting Vehicle Options: CK2,3(L5P)
- Require Quantity: 08
- Package Quantity: 1
$14.81 $9.41
1
Add To Cart

12627520
GASKET, Engine Rear Main Bearing, GASKET,CRANKSHAFT REAR OIL SEAL HOUSING(SINGLE USE)(PART OF 18)(SINGLE USE)
$10.78 $6.85
1
Add To Cart

PLUG, Engine Oil Distribution
12651561
PLUG, ENGINE BLOCK OIL GALLERY(19MM)
Fitting Vehicle Options: CK2,3(L5P)
Require Quantity: 05
Package Quantity: 1
$1.16 $0.72
1
Add To Cart
11546667
PLUG, ENGINE BLOCK OIL GALLERY(M16X1.5X16.25)(0.034)
- Fitting Vehicle Options: CK2,3(L8T)
$7.03 $4.46
1
Add To Cart
12661074
PLUG, ENGINE BLOCK OIL GALLERY(INCLUDES 9)(OIL GALLEY)(LOWER)(W/O-RING)
- Fitting Vehicle Options: CK2,3(L8T)
$5.02 $3.19
11611991
PLUG, ENGINE BLOCK OIL GALLERY
- Fitting Vehicle Options: CK2,3(L5P)
- Require Quantity: 04
- Package Quantity: 1
$5.12 $3.26

BOLT, Engine Crankshaft Pulley And Balancer
11547372
BOLT, CRANKSHAFT BALANCER(SINGLE USE)(M16X2X103)(SEE BULLETIN PIP5156 TO SEE GENERATOR 4/5 CROSS.SHAFT BALANCER BOLT DIFFERENTIAL)
Fitting Vehicle Options: CK2,3(L8T)
$37.61 $22.73
1
Add To Cart
97329601
BOLT, CRANKSHAFT BALANCER(SINGLE USE)(12 POINT HEAD)(RIGHT HAND THREAD)
- Fitting Vehicle Options: CK2,3(L5P)
$21.27 $12.22
1
Add To Cart

12672469
CAMSHAFT, Engine, CAMSHAFT,ENGINE(INCLUDES 44)
$206.63 $118.74
1
Add To Cart

11561455
BOLT, Engine Camshaft, BOLT,CAMSHAFT RETAINER(M8X1.25X15)(8.908)
- Require Quantity: 04
- Package Quantity: 1
$6.82 $4.12
1
Add To Cart

PIN, Engine Clutch Housing or Transmission
1453658
PIN, TRANS LOCATING(5/8 X 1 3/16)(8.939)
Fitting Vehicle Options: CK2,3(03-43-53)(L8T,MYD)
Require Quantity: 02
Package Quantity: 1
Replaced By: 12720455
$7.40 $4.69
1
Add To Cart
12623048
PIN, FLYWHEEL HOUSING LOCATING
- Fitting Vehicle Options: K2,3(L5P)
- Require Quantity: 02
- Package Quantity: 1
$7.71 $4.88
1
Add To Cart
12720455
PIN, TRANS LOCATING
- Fitting Vehicle Options: CK2,3(L8T,MYD)
- Require Quantity: 02
- Package Quantity: 1
$7.40 $4.69
1
Add To Cart

SEAL, Engine Rear Main Bearing
97209342
SEAL, CRANKSHAFT REAR OIL
Fitting Vehicle Options: CK2,3(L5P)
$75.99 $43.67
1
Add To Cart
12665076
SEAL, CRANKSHAFT REAR OIL(SINGLE USE)(PART OF 18)(SINGLE USE)(W/O INSTRUCTION SHEET)
- Fitting Vehicle Options: CK2,3(L8T)
$40.94 $26.02
1
Add To Cart

11588327
RETAINER, Engine Timing, RETAINER,TIMING CHAIN TENSIONER BOLT(PART OF 36)(ROUND M8 BOLT)(4.128)
- Require Quantity: 02
- Package Quantity: 1
$7.39 $4.69
1
Add To Cart

11588327
RETAINER, Engine Rear Main Bearing, RETAINER,CRANKSHAFT REAR OIL SEAL HOUSING BOLT(PART OF 18)(ROUND M8 BOLT)(4.128)
- Require Quantity: 12
- Package Quantity: 1
$7.39 $4.69
1
Add To Cart

BEARING KIT, Engine Crankshaft Main
12682028
BEARING KIT, CRANKSHAFT(INCLUDES 25,37,39)(COMPLETE MAIN BEARING KIT POSITIONS 1-5)
Fitting Vehicle Options: CK2,3(L8T,MYD)
Replaced By: 12729655
$75.68 $43.49
1
Add To Cart
12677680
BEARING KIT, CRANKSHAFT(INCLUDES 20,26,36)(STD SIZE)
- Fitting Vehicle Options: CK2,3(L5P)
- Replaced By: 12704537
$81.46 $51.77
1
Add To Cart

24575061
PIN, Engine Camshaft Gear, PIN,CAMSHAFT GEAR LOCATING(PART OF 43)(17MM LONG)
$8.66 $5.50
1
Add To Cart

97209341
SEAL, Engine Front Cover & Crankshaft Seal, SEAL,CRANKSHAFT FRONT OIL
$73.80 $37.20
1
Add To Cart

97229043
GASKET, Flywheel & Clutch & Converter Housing, GASKET,FLYWHEEL HOUSING COVER
$7.83 $4.97
1
Add To Cart

BOLT, Engine Main Bearing Cap
11546565
BOLT, CRANKSHAFT BEARING CAP(SINGLE USE)(M8X1.25X25)(HEXAGON FLANGE)(SINGLE USE)
Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
Require Quantity: 10
Package Quantity: 1
$7.02 $4.46
1
Add To Cart
11548076
BOLT, CRANKSHAFT BEARING CAP(M10X2X96)(SINGLE USE)
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 10
- Package Quantity: 1
$7.02 $4.46
1
Add To Cart
11548075
BOLT, CRANKSHAFT BEARING CAP(M10X2X82)(SINGLE USE)
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 10
- Package Quantity: 1
$7.02 $4.46
1
Add To Cart
11547203
BOLT, CRANKSHAFT BEARING CAP
- Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
- Require Quantity: 10
- Package Quantity: 1
$5.86 $3.72
1
Add To Cart
11610683
BOLT, CRANKSHAFT BEARING CAP(USE TOGETHER WITH SEALANT 12346004)
- Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
- Require Quantity: 10
- Package Quantity: 1
$7.02 $4.46
1
Add To Cart

11589001
BOLT, Flywheel & Clutch & Converter Housing, BOLT,FLYWHEEL HOUSING COVER(M8X1.25X25)(HEXFLANGE)(W/ADHESIVE)(0.056)
- Require Quantity: 02
- Package Quantity: 1
$9.80 $6.22
1
Add To Cart

11610965
BOLT, Engine Flywheel, BOLT,FLYWHEEL(M16X45X1.5)
- Require Quantity: 08
- Package Quantity: 1
$7.02 $4.24
1
Add To Cart

94048159
PIN, Engine Crankshaft/Timing Gear, PIN,CRANKSHAFT GEAR(PART OF 35)(5MM O.D. X 6MM LG)(0.738)
- Require Quantity: 02
- Package Quantity: 1
$1.37 $0.87
1
Add To Cart

97228317
PIN, Transmission Case, PIN,TRANS CASE LOCATING(15.7MMX21MM)(0.206)
- Require Quantity: 02
- Package Quantity: 1
$14.30 $9.09

12631214
SPROCKET, Engine Crankshaft/Timing, SPROCKET,CRANKSHAFT
- Replaced By: 12713934
$35.73 $21.59
1
Add To Cart

19333511
ADHESIVE, Maintenance Products, ADHESIVE,THREADLOCKER(VIBRA-TITE 121)(MEDIUM STRENGTH)(BLUE)(20 OUNCE(PART OF 23,24)
$10.48 $5.84
1
Add To Cart

22531637
PIN, Engine Rear Main Bearing, PIN,CRANKSHAFT REAR OIL SEAL HOUSING LOCATING(PART OF 18)(8MM DIAMETER,12MM LONG)(DOWEL)(0.413)
- Require Quantity: 02
- Package Quantity: 10
$5.11 $3.24
10
Add To Cart

12561513
KEY, Engine Crankshaft Pulley and Balancer, KEY,CRANKSHAFT BALANCER(PART OF 24)(4.8MMX37.5MM)
$7.38 $4.69
1
Add To Cart

SENSOR, Distributor (also Knock Sensor)
12623095
SENSOR, KNOCK(INCLUDES 14)
Fitting Vehicle Options: CK2,3(L8T)
Require Quantity: 02
Package Quantity: 1
$42.02 $22.26
1
Add To Cart
12641040
SENSOR, CRANKSHAFT POSITION(INCLUDES 56)
- Fitting Vehicle Options: CK2,3(L5P)
$37.62 $19.94
1
Add To Cart
12669636
SENSOR, CRANKSHAFT POSITION(INCLUDES 50)(MATING CONNECTOR USE 19299690)
- Fitting Vehicle Options: CK2,3(L8T)
$51.84 $27.48
1
Add To Cart

94034146
GASKET, Engine Block, GASKET,ENGINE BLOCK COOLANT DRAIN HOLE PLUG(INSIDE DIAMETER:10.2 OUTSIDE DIAMETER:15.2)(1.844)
- Require Quantity: 02
- Package Quantity: 10
$5.02 $3.19
10
Add To Cart

11547134
BOLT, Engine Rear Main Bearing, BOLT,CRANKSHAFT REAR OIL SEAL HOUSING(PART OF 18)(1.639)
- Require Quantity: 12
- Package Quantity: 1
$1.04 $0.66
1
Add To Cart

BOLT, Engine Connecting Rod Cap
11548432
BOLT, CONNECT ROD(PART OF 3)
Fitting Vehicle Options: CK2,3(L8T)
Require Quantity: 02
Package Quantity: 1
$1.72 $1.04
1
Add To Cart
11611760
BOLT, CONNECT ROD(PART OF 53)
- Fitting Vehicle Options: CK2,3(L5P)
- Require Quantity: 16
- Package Quantity: 1
$5.26 $3.35
1
Add To Cart

11589168
BOLT, Engine Crankshaft Pulley and Balancer, BOLT,CRANKSHAFT PULLEY(M10X1.5X49.8,41THD)(28 OUTSIDE DIAMETER, 10.9)(4.634)
- Require Quantity: 03
- Package Quantity: 1
$4.68 $2.61
1
Add To Cart

11612124
PLUG, Engine Clutch Housing, PLUG,FLYWHEEL HOUSING
$4.31 $2.74
1
Add To Cart

12624812
INSERT, Engine Clutch Housing, INSERT,FLYWHEEL HOUSING(PART OF 9)
- Require Quantity: 02
- Package Quantity: 1
$7.89 $5.02
1
Add To Cart

BEARING, Engine Camshaft & Balance Shaft Front

12631285
BEARING, CAMSHAFT(POSITION 1)(BEARING IS UNFINISHED REQUIRES LINE BORING)
$7.39 $4.69
1
Add To Cart
12631286
BEARING, CAMSHAFT(POSITIVE 2,3,4,5)(BEARING IS UNFINISHED REQUIRES LINE BORING)
- Require Quantity: 04
- Package Quantity: 1
$7.38 $4.69
1
Add To Cart

12638261
SPACER, Engine Crankshaft, SPACER,AUTOMATIC TRANSMISSION FLEXIBLE PLATE(0.669)
$20.92 $13.29
1
Add To Cart

12638432
SEAL, Engine Oil Distribution, SEAL,ENGINE BLOCK OIL GALLERY PLUG(O RING)(SINGLE USE)(PART OF 8)(LOWER)(SINGLE USE)
$7.39 $4.69
1
Add To Cart

12638433
GASKET, Engine Oil Pump Body, GASKET,OIL PUMP HOUSING(PART OF 36)
$7.40 $4.69
1
Add To Cart

12640390
SHIELD, Distributor (also Knock Sensor), SHIELD,KNOCK SENSOR
- Replaced By: 12686148
$42.36 $22.45
1
Add To Cart

RETAINER, Engine Piston Pin
12656762
RETAINER, PISTON PINION(PART OF 1)
Fitting Vehicle Options: CK2,3(L5P)
Require Quantity: 16
Package Quantity: 1
$7.01 $4.46
1
Add To Cart
1647383
RETAINER, PISTON PINION(PART OF 1)
- Fitting Vehicle Options: CK2,3(L8T)
- Require Quantity: 08
- Package Quantity: 1
$8.90 $5.65
1
Add To Cart

12658507
SEAL, Engine Clutch Housing, SEAL,FLYWHEEL HOUSING TO ENGINE
- Require Quantity: 02
- Package Quantity: 1
$7.01 $4.46
1
Add To Cart

RING KIT, Engine Piston
12661872
RING KIT, PISTON(.5MM)(OUTSIDE)
Require Quantity: 08
Package Quantity: 1
$142.03 $90.27
1
Add To Cart
12661871
RING KIT, PISTON(STD SIZE)
- Require Quantity: 08
- Package Quantity: 1

12662371
GEAR, Engine Oil Pump, GEAR,OIL PUMP DRIVE(INCLUDES 31)(INCLUDES 12662372 & 12634116)
$55.05 $36.83
1
Add To Cart

12662372
WASHER, Engine Oil Pump, WASHER,OIL PUMP DRIVE SHAFT GEAR(PART OF 32)
- Require Quantity: 02
- Package Quantity: 1
$9.46 $6.01
1
Add To Cart

ROD, Engine Piston
12675746
ROD, CONNECT(INCLUDES 4)
Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
Require Quantity: 08
Package Quantity: 1
$79.93 $50.81
1
Add To Cart
12680192
ROD, CONNECT(INCLUDES 3,50,51)
- Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
- Require Quantity: 08
- Package Quantity: 1
$104.46 $66.40

CRANKSHAFT, Engine
12677566
CRANKSHAFT, (INCLUDES 21,23,25,30,34)
Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
$918.67 $710.59
1
Add To Cart
12708884
CRANKSHAFT, (INCLUDES 23,38,40)
- Fitting Vehicle Options: CK2,3(L8T)
$1190.78 $750.01
1
Add To Cart

12680282
HOUSING, Engine Clutch Housing, HOUSING,FLYWHEEL(INCLUDES 8,14)
$357.85 $205.61
1
Add To Cart

BALANCER, Engine Crankshaft And Camshaft Balancer
12702576
BALANCER, CRANKSHAFT
Fitting Vehicle Options: CK2,3(L5P)
Replaced By: 12723412
$157.92 $100.36
1
Add To Cart
12680364
BALANCER, CRANKSHAFT
- Fitting Vehicle Options: CK2,3(L8T)
$125.57 $79.82

12689342
ACTUATOR, Engine Camshaft, ACTUATOR,CAMSHAFT POSITION
$190.42 $120.50
1
Add To Cart

12692644
PULLEY, Engine Crankshaft And Camshaft Balancer, PULLEY,CRANKSHAFT
$51.40 $31.06
1
Add To Cart

PISTON KIT, Engine Piston
12693468
PISTON KIT, ENGINE(INCLUDES 2,54,55)
Fitting Vehicle Options: CK2,3(03-43-53)(L5P)
Require Quantity: 08
Package Quantity: 1
$210.45 $133.14
1
Add To Cart
12699527
PISTON KIT, ENGINE(INCLUDES 55,56)(STD)
- Location: Passenger Side
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 04
- Package Quantity: 1
$94.69 $60.19
1
Add To Cart
12699528
PISTON KIT, ENGINE(INCLUDES 55,56)(.5MM OVERSIZE)
- Location: Passenger Side
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 04
- Package Quantity: 1
$120.85 $76.80
1
Add To Cart
12699529
PISTON KIT, ENGINE(INCLUDES 55,56)(STD)
- Location: Driver Side
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 04
- Package Quantity: 1
$42.61 $27.08
1
Add To Cart
12699530
PISTON KIT, ENGINE(INCLUDES 55,56)(.5MM OVERSIZE)
- Location: Driver Side
- Fitting Vehicle Options: CK2,3(03-43-53)(L8T)
- Require Quantity: 04
- Package Quantity: 1
$120.85 $76.80
1
Add To Cart

12697047
VALVE, Engine Camshaft, VALVE,CAMSHAFT POSITION ACTUATOR SOLENOID
- Replaced By: 12731637
$39.67 $23.98
1
Add To Cart

12698239
COVER, Flywheel & Clutch & Converter Housing, COVER,FLYWHEEL HOUSING
$14.43 $9.17
1
Add To Cart

12705664
HOUSING, Engine Rear Main Bearing, HOUSING,CRANKSHAFT REAR OIL SEAL(INCLUDES 17,19,20,21,22)
$102.80 $65.35
1
Add To Cart

12705875
HEATER, Engine Coolant Heater, HEATER,ENGINE COOLANT
$50.34 $30.41
1
Add To Cart

SEALANT, Maintenance Products

19369831
SEALANT, ROOM TEMPERATURE VULCANIZING SILICONE(1217H)(THREEBOND)(CRANKSHAFT REAR OIL SEAL HOUSING)
$39.90 $22.24
1
Add To Cart
19369831
SEALANT, ROOM TEMPERATURE VULCANIZING SILICONE(1217H)(THREEBOND)(FLYWHEEL HOUSING)
$39.90 $22.24
1
Add To Cart

24502262
PLUG, Engine Cylinder Head, PLUG,CYL HEAD CORE HOLE(PART OF 24)(INCLUDES 40)(1.014 OUTSIDE DIAMETER,.32 THICK,FROM .05 THICK 304 STAINLESS)
$7.03 $4.46
1
Add To Cart

94399688
PIN, Engine Main Bearing Cap, PIN,CRANKSHAFT REAR MAIN BEARING CAP LOCATING(OUTSIDE DIAMETER=18.15)
- Require Quantity: 02
- Package Quantity: 1
$2.38 $1.59
1
Add To Cart

97329602
WASHER, Engine Crankshaft Pulley and Balancer, WASHER,CRANKSHAFT BALANCER
$60.39 $36.49
1
Add To Cart

12640788
RING, Distributor (also Knock Sensor), RING,CRANKSHAFT POSITION SENSOR EXCITER(PART OF 35)
$24.41 $15.52

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-Cylinder Block & 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.