Camshaft & timing. Crankshaft & bearings. Cylinder head & valves. Lubrication. Mounts. Pistons. Rings & bearings.

Oil cooler. Oil pan. Oil pump. 4 & 5. Sierra 2500 HD; Exhaust. Sierra 2500 HD; Grade A. Sierra 2500 HD; Grade B. Sierra 2500 HD; Grade C. Sierra 2500 HD; Intake. Sierra 2500 HD; Left. Sierra 2500 HD; Lower; From 07/11/23. Sierra 2500 HD; Lower; To 07/10/23. Sierra 2500 HD; No. 1. Sierra 2500 HD; No. 2. Sierra 2500 HD; Right. Sierra 2500 HD; Upper. Sierra 3500 HD; Exhaust. Sierra 3500 HD; Grade A. Sierra 3500 HD; Grade B. Sierra 3500 HD; Grade C. Sierra 3500 HD; Intake. Sierra 3500 HD; Left. Sierra 3500 HD; Lower; From 07/11/23. Sierra 3500 HD; Lower; To 07/10/23. Sierra 3500 HD; No. 1. Sierra 3500 HD; No. 2.

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	Engine Mount (Front) Sierra 2500 HD; Left. Sierra 3500 HD; Left. Silverado.	84070092 View Product	$96.05

	ENGINE. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12732223 View Product	$4594.03

	Pin - Piston. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12656761 View Product	$20.22

1	Head Assembly - Cylinder (MCHG). Sierra 2500 HD. Sierra 3500 HD. Silverado.	12716846 View Product	$677.33

2	Engine Cylinder Head Gasket Sierra 2500 HD; Grade B. Sierra 3500 HD; Grade B. Silverado.	12727485 View Product	$97.03

2	Engine Cylinder Head Gasket Sierra 2500 HD; Grade A. Sierra 3500 HD; Grade A. Silverado.	12727484 View Product	$84.16

2	Engine Cylinder Head Gasket Sierra 2500 HD; Grade C. Sierra 3500 HD; Grade C. Silverado.	12727486 View Product	$109.33

3	Engine Valve Cover Sierra 2500 HD; Left. Sierra 3500 HD; Left. Silverado.	12701129 View Product	$107.63

3	Engine Valve Cover Sierra 2500 HD; Right. Sierra 3500 HD; Right. Silverado.	12680249 View Product	$187.82

3	Engine Valve Cover Sierra 2500 HD; Right. Sierra 3500 HD; Right. Silverado.	12725771 View Product	$106.79

3	Engine Valve Cover Sierra 2500 HD; Left. Sierra 3500 HD; Left. Silverado.	12677065 View Product	$185.66

4	Engine Valve Cover Gasket Sierra 2500 HD. Sierra 3500 HD. Silverado.	12691860 View Product	$31.50

5	Engine Exhaust Valve Sierra 2500 HD; Exhaust. Sierra 3500 HD; Exhaust. Silverado.	12636187 View Product	$15.94

5	Valve - Interior. Valves. Sierra 2500 HD; Intake. Sierra 3500 HD; Intake. Silverado.	12734017 View Product	$12.55

6	Engine Valve Stem Oil Seal Sierra 2500 HD. Sierra 3500 HD. Silverado.	12633926 View Product	$7.38

7	Engine Valve Spring Sierra 2500 HD. Sierra 3500 HD. Silverado.	12633927 View Product	$5.11

7	Spring - Valve. Valve SpringS. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12729741 View Product	$7.50

8	Housing. Main Seal Retainer. (Rear) Sierra 2500 HD. Sierra 3500 HD. Silverado.	12680282 View Product	$357.85

9	Engine Valve Spring Retainer Sierra 2500 HD. Sierra 3500 HD. Silverado.	12636194 View Product	$4.80

10	Engine Valve Spring Retainer Keeper Sierra 2500 HD. Sierra 3500 HD. Silverado.	12636193 View Product	$7.39

11	Engine Rocker Arm Sierra 2500 HD; Exhaust. Sierra 3500 HD; Exhaust. Silverado.	12636190 View Product	$26.39

11	Engine Rocker Arm Sierra 2500 HD; Intake. Sierra 3500 HD; Intake. Silverado.	12636189 View Product	$26.39

12	Engine Pushrod Sierra 2500 HD. Sierra 3500 HD. Silverado.	12633924 View Product	$8.51

13	Engine Camshaft Follower (Lower) Sierra 2500 HD. Sierra 3500 HD. Silverado.	12670435 View Product	$13.93

14	Engine Camshaft Sierra 2500 HD. Sierra 3500 HD. Silverado.	12633925 View Product	$232.19

15	Engine Camshaft Bearing 4 & 5. Sierra 2500 HD; No. Sierra 3500 HD; No. Silverado.	12631286 View Product	$7.38

15	Engine Camshaft Bearing 1. Sierra 2500 HD; No. Sierra 3500 HD; No. Silverado.	12631285 View Product	$7.39

16	Engine Crankshaft Seal (Front) Sierra 2500 HD. Sierra 3500 HD. Silverado.	97209341 View Product	$73.80

18	CAMSHAFT GEAR. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12721405 View Product	$242.36

21	Engine Piston Sierra 2500 HD. Sierra 3500 HD. Silverado.	12693468 View Product	$210.45

21	PISTON KIT. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12732224 View Product	$176.98

22	Engine Connecting Rod Sierra 2500 HD. Sierra 3500 HD. Silverado.	12680192 View Product	$104.46

23	Engine Connecting Rod Bearing Sierra 2500 HD. Sierra 3500 HD. Silverado.	12685817 View Product	$14.81

24	Engine Crankshaft Main Bearing Sierra 2500 HD. Sierra 3500 HD. Silverado.	12704537 View Product	$81.46

25	CRANKSHAFT. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12677566 View Product	$918.67

26	Engine Crankshaft Seal (Rear) Sierra 2500 HD. Sierra 3500 HD. Silverado.	97209342 View Product	$75.99

27	Engine. Balancer. CR/SHF. Crankshaft Pulley. Harmonic. Vibration Damper. Sierra 2500 HD. Sierra 3500 HD. Silverado. Engine Crankshaft Pulley. Engine Harmonic Balancer. Incl.Engine Harmonic Balancer. Part has related component that cannot be reused/reinstalled; bolt.	12723412 View Product	$157.92

28	Engine Crankshaft Pulley Sierra 2500 HD. Sierra 3500 HD. Silverado.	12692644 View Product	$51.40

29	Engine Oil Pan (Lower) Sierra 2500 HD; Lower; From 07/11/23. Sierra 3500 HD; Lower; From 07/11/23. Silverado.	12725600 View Product	$115.15

30	Engine Oil Pan Gasket Sierra 2500 HD. Sierra 3500 HD. Silverado.	12642251 View Product	$7.34

31	Engine Timing Crankshaft Gear Sierra 2500 HD. Sierra 3500 HD. Silverado.	12662371 View Product	$55.05

32	Pump Assembly - Oil. Sierra 2500 HD. Sierra 3500 HD. Silverado.	12731119 View Product	$143.80

33	Engine Oil Pump Pickup Tube Sierra 2500 HD. Sierra 3500 HD. Silverado.	12706083 View Product	$36.64

34	Engine Oil Cooler Sierra 2500 HD. Sierra 3500 HD. Silverado.	12735508 View Product	$398.22

34	Engine Oil Cooler Sierra 2500 HD. Sierra 3500 HD. Silverado.	12735508 View Product	$398.22

	Engine Mount (Front, Rear) Sierra 2500 HD; Right. Sierra 3500 HD; Right. Silverado.	84948287 View Product

	Engine Mount (Front, Rear) Sierra 2500 HD; Right. Sierra 3500 HD; Right. Silverado.	84948288 View Product

	ENGINE. Sierra 2500 HD. Sierra 3500 HD. Silverado. Does Not Include: Water Pump, Torsional Damper, Intake And Exhaust Manifolds, Distributor, Flywheel And Clutch Housing.	12700876 View Product

17	Engine Timing Cover (Front) Sierra 2500 HD. Sierra 3500 HD. Silverado.	12687775 View Product