Engines & Components for 2004 GMC Sierra 2500
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Bolt
ACDelco
12556127
GM Genuine Parts Bolts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bolts fasten...
Positions: Rear
Fits Your Vehicle
Crankshaft Rear Oil Seal Housing Gasket
ACDelco
12639249
GM Genuine Parts Engine Crankshaft Seal Retainer Gasket are designed, engineered, and tested to rigorous standards, and are backed by...
Positions: Rear
Fits Your Vehicle
Multi-Purpose Wiring Connector
ACDelco
PT420
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
Engine Valve Lifter
ACDelco
HL124
ACDelco GM Original Equipment Engine Valve Lifters automatically help maintain a 'zero' valve lash condition to help prevent valve train...
Fits Your Vehicle
Starter Bolt
ACDelco
12561387
GM Genuine Parts Bolts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are...
Fits Your Vehicle
Multi-Purpose Nut
ACDelco
11517996
GM Genuine Parts Nuts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are...
Fits Your Vehicle
Fuel Management Lifter
ACDelco
12721203
GM Genuine Parts Engine Valve Lifter are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM...
Fits Your Vehicle
LC9 5.3L Drive Belt Idler Pulley
GM
12669569
Repair noisy idler pulley bearing
$89.06
MSRP $160.46
Save $71.40
44.5% Off Fits Your Vehicle
Connecting Rod
GM
12568734
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$92.59
MSRP $146.33
Save $53.74
36.7% Off 
Valve Spring
GM
12706568
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$5.42
MSRP $7.93
Save $2.51
31.7% Off Fits Your Vehicle
Standard V-Ribbed Serpentine Belt
ACDelco
6K923
ACDelco Gold (Professional) Standard Serpentine Belts are a high quality alternative to Original Equipment (OE) parts. Serpentine belts...
Fits Your Vehicle
Multi-Purpose Clip
ACDelco
15041309
GM Genuine Parts Multi-Purpose Clips are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These...
Fits Your Vehicle
6-Way Female Black Multi-Purpose Pigtail
ACDelco
PT246
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended...
Fits Your Vehicle
LC9 5.3L Drive Belt Idler Pulley
ACDelco
12669569
GM Genuine Parts Accessory Drive Belt Idler Pulleys are designed, engineered, and tested to rigorous standards, and are backed by General...
Fits Your Vehicle
Wiring Pigtail
ACDelco
PT1910
ACDelco Gold (Professional) Engine Camshaft Position Sensor Connector are a high quality alternative to Original Equipment (OE) parts....
Fits Your Vehicle
Flanged Idler Pulley
ACDelco
38009
ACDelco Gold (Professional) Accessory Drive Belt Pulleys are a high quality alternative to Original Equipment (OE) parts. When the...
Positions: Serpentine
Fits Your Vehicle
Multi-Purpose Clip
ACDelco
88960976
GM Genuine Parts Multi Purpose Clips are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM...
Fits Your Vehicle
Power Steering Pump Pulley
ACDelco
12605677
Maintain your Chevrolet, Buick, GMC, or Cadillac vehicle with a Genuine GM Parts Power Steering Pump Pulley. Only Genuine GM Parts are...
Fits Your Vehicle
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