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Engine Parts for 2026 GMC Sierra 3500 HD

Part # / Description / Price
Upper Intake Manifold Seal
MSRP $12.09
GM GM

Engine Intake Manifold Gasket

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

Engine Oil Cooler Adapter Gasket
MSRP $9.42
GM GM

Engine Oil Cooler Gasket

6.6L diesel, lower components, lower. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Dipstick Seal
MSRP $3.47
GM GM

Engine Oil Dipstick Tube Seal

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

Engine Oil Filler Cap
MSRP $16.33
GM GM

2017-19. 6.6L diesel, upper components. Helps seal and keep oil from leaking out of your vehicle's engine oil filler opening This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors

Valve Cover Gasket
MSRP $35.51
GM GM

Engine Valve Cover Gasket

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

Engine Oil Cooler Adapter Gasket
MSRP $11.81
GM GM

Engine Oil Cooler Gasket

Adapter To Block. 6.6L diesel, engine side. 2017-19, engine side. 6.6L diesel, lower components, upper. 2015-16, engine side. Manufactured to GM OE specification for fit, form, and function

Oil Cooler
MSRP $476.73
GM GM

Engine Oil Cooler

Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Assembly. 6.6L diesel, lower components, fm 11/30/2023.

Engine Oil Filler Cap O-Ring
MSRP $6.01
GM GM

Engine Oil Filler Cap Gasket

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors .

Multi-Purpose O-Ring
MSRP $0.67
GM GM

Engine Oil Dipstick Tube Seal

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

Crankshaft Front Oil Seal
MSRP $71.22
GM GM

Engine Crankshaft Seal, Front

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