Gaskets & Sealing Systems for 2026 GMC Sierra 3500 HD
Related Parts
Part # / Description / Price
Price
Flywheel Housing to Engine Seal 
GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.92
$5.20
MSRP $7.92
$5.20
Front Oil Pan Seal GM
GM Description: Small. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.34
$5.46
MSRP $8.34
$5.46
Upper Intake Manifold Seal GM
GM Description: 2017-19, lower. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Diesel. Silverado, Sierra 3500 HD. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $12.09
$7.92
MSRP $12.09
$7.92
Head Gasket GM
GM Description: Left. Right. Silverado, Sierra 3500 HD. Grade A. 1.14-1.26mm Thick.
MSRP $88.36
$55.40
MSRP $88.36
$55.40
Head Gasket GM
GM Description: Right. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Grade B. 1.19-1.31mm Thick.
MSRP $104.38
$65.45
MSRP $104.38
$65.45
Dipstick Seal GM
GM Description: 2017-19. 6.6L diesel, lower components. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $3.47
$2.28
MSRP $3.47
$2.28
Valve Cover Gasket GM
GM Description: 2017-19. All. 6.6L diesel, upper components. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $35.51
$22.47
MSRP $35.51
$22.47
Engine Oil Filler Cap O-Ring GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
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MSRP $6.01
$3.47
MSRP $6.01
$3.47
Multi-Purpose O-Ring GM
GM Description: Helps prevent leaks in various components of your vehicle
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $0.67
$0.44
MSRP $0.67
$0.44
Crankshaft Front Oil Seal GM
GM Positions: Front
Description: All models. Express, savana. 2017-19. 6.6L diesel, upper components. 2015-16. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Helps prevent leaks in various components of your vehicle
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $71.22
$45.05
MSRP $71.22
$45.05
Rear Crankshaft Oil Seal GM
GM Positions: Rear
Description: All models. Express, savana. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Seals the openings on either end of the crankshaft for a tight seal
Withstands heat and pressure to help prevent the engine from leaking oil
This GM Genuine Part is designed ...
MSRP $83.58
$52.88
MSRP $83.58
$52.88