Engines & Components for 2025 GMC Sierra 2500 HD
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Valve Lifter Guide
ACDelco
12729382
GM Genuine Parts Engine Valve Lifter Guides are designed, engineered, and tested to rigorous standards, and are backed by General Motors....
$6.77
Fits Your Vehicle
Relay
ACDelco
13468934
ACDelco GM Original Equipment Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors....
$10.17
Fits Your Vehicle
Rear Passenger Side Spring Rear Hanger
ACDelco
84794783
GM Genuine Parts Leaf Spring Hangers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM...
Positions: Right Rear Spring Rearward
$100.48
Fits Your Vehicle
Multi-Purpose Strap
ACDelco
11569748
GM Genuine Parts Cable Ties are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine...
$0.18
Fits Your Vehicle
Multi-Purpose Hose Clip
ACDelco
11548857
GM Genuine Parts Multi-Purpose Clips are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These...
Positions: Inlet, Outlet
$6.94
Fits Your Vehicle
Multi-Purpose Nut
ACDelco
11546389
GM Genuine Parts Nuts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are...
$0.05
Fits Your Vehicle
Emission Reduction Fluid Tank Reservoir Wire Harness
ACDelco
85519075
GM Genuine Parts Multi-Purpose Wire Connectors are designed, engineered, and tested to rigorous standards, and are backed by General...
Fits Your Vehicle
Multi-Purpose Hole Plug
ACDelco
11569584
GM Genuine Parts Engine Expansion Plug are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM...
Positions: Cylinder Head
$6.43
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...
$6.94
Fits Your Vehicle
Multi-Purpose Retainer
GM
94530387
GM Genuine Parts Multi-Purpose Retainer (Part Number: 94530387) is a genuine GM fastening retainer designed to secure interior and...
$57.15
Intake Manifold Insulator
GM
84262961
GM Genuine Parts Intake Manifold Insulator (Part Number: 84262961) is an intake manifold insulator specified for 2017-2019 6.6L diesel...
$12.21
MSRP $15.33
Save $3.12
20.4% Off Fits Your Vehicle
Fender Bolt
GM
11519383
GM Bolt (Part Number: 11519383) is a heavy-hex fastener used in a variety of engine and underhood subassemblies. Type:...
$7.48
MSRP $8.75
Save $1.27
14.5% Off 
Multi-Purpose Rivet
GM
11516807
GM Multi-Purpose Rivet (Part Number: 11516807) is a rivet used for securing components such as license-plate brackets and trim....
$213.91
Front Differential Carrier Bolt
GM
11561075
GM Genuine Parts Front Differential Carrier Bolt (Part Number: 11561075) is an OEM fastener used in front differential or hitch...
$10.18
MSRP $12.78
Save $2.60
20.3% Off 
Companion Flange
GM
85111015
GM Genuine Parts Differential Drive Pinion Gear Yoke with Nut, Seal, and Tag (Part Number: 85111015) is a companion flange kit that...
$186.93
MSRP $300.32
Save $113.39
37.8% Off Fits Your Vehicle
Idler Pulley
GM
12729057
Silverado, Sierra 2500 HD. Dual alternator. Gas. Lower. Ribbed. Silverado, Sierra 3500 HD.
$62.62
MSRP $114.40
Save $51.78
45.3% Off 
Engine Exhaust Rocker Arm
GM
12636190
GM Genuine Parts Engine Exhaust Rocker Arm (Part Number: 12636190) is an OE exhaust rocker arm produced to GM specifications to...
Positions: Exhaust
$20.99
MSRP $28.33
Save $7.34
25.9% Off Fits Your Vehicle
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