Engines & Components for 2004 GMC Sierra 2500
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Engine Crankshaft Oil Deflector
ACDelco
12611129
GM Genuine Parts Engine Oil Sump Windage Trays are designed, engineered, and tested to rigorous standards, and are backed by General...
Fits Your Vehicle
Multi-Purpose Wiring Connector
ACDelco
PT2321
ACDelco Gold (Professional) Pigtail Connectors are a high quality alternative to Original Equipment (OE) parts. These pigtails are...
Fits Your Vehicle
Engine Camshaft Bearing
ACDelco
19260875
GM Genuine Parts Engine Camshaft Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors....
Fits Your Vehicle
V-Ribbed Serpentine Belt
GM
12576447
Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt
Creates a secure point of contact...
Positions: Air Conditioning
$23.23
MSRP $40.76
Save $17.53
43% Off Fits Your Vehicle
Multi-Purpose O-Ring
GM
24504031
Helps prevent leaks in various components of your vehicle
This GM Genuine Part is designed, engineered, and tested to rigorous standards...
$0.46
MSRP $0.67
Save $0.21
31.3% Off Fits Your Vehicle
Pump Pulley
GM
19421487
For A/C Belt. Stamped #NL. Exc.Auxiliary Heater. Wo/6 Groove. With 6 Groove.
$106.38
MSRP $168.12
Save $61.74
36.7% Off 
V-Ribbed Serpentine Belt
GM
12637202
Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt
Creates a secure point of contact...
Positions: Fan, Water Pump, Alternator and Power Steering
$54.15
MSRP $95.02
Save $40.87
43% Off Fits Your Vehicle
M10x1.5x40 Multi-Purpose Bolt
GM
11515768
Front. Without SUPERCHARGED. drive tensioner. 6.2L without supercharger, 2013-15. 3.8L. #2. Comp to bracket. 6.2L without supercharger...
$4.03
MSRP $5.89
Save $1.86
31.6% Off 
Wiring Pigtail
ACDelco
PT3846
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
Engine Coolant Temperature Sensor
ACDelco
213-4333
ACDelco GM Original Equipment Engine Coolant Temperature Sensors monitor engine temperature, and are GM-recommended replacements for your...
Fits Your Vehicle
Multi-Purpose Pressure Sensor
ACDelco
12677836
ACDelco GM Original Equipment Multi Purpose Pressure Sensors are designed, engineered, and tested to rigorous standards, and are backed...
Fits Your Vehicle
Oil Pan Drain Plug
ACDelco
11562588
GM Genuine Parts Engine Oil Drain Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM...
Fits Your Vehicle
Multi-Purpose Wiring Connector
ACDelco
84779454
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
Drive Belt Tensioner Assembly with Pulley
ACDelco
38158
ACDelco Gold (Professional) 90 Degree Molded Accessory Drive Belt Tensioner Assemblies are the high quality alternative to Original...
Positions: Serpentine
Fits Your Vehicle
Drive Belt Tensioner
ACDelco
12609719
GM Genuine Parts Drive Belt Tensioner Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General...
Fits Your Vehicle
Wiring Pigtail
ACDelco
PT1346
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
Wire Connector
ACDelco
PT2869
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
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