Free Shipping On Orders Over $75. Details

Talk to a Sierra Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $4,000 In Upgrades!!! Enter Now
Protect your engine and keep it running right with our gaskets and seals. Your Sierra's engine uses several different liquids at the same time to run properly. Between the coolant, the gasoline and the oil that it relies on there are a lot of different fluids that have the potential to mix together. If any of those fluids mix you could suffer an engine failure or at the very least some serious malfunctions. That's why it's so important that the gaskets and seals hold up properly over time. These will need changing eventually. That's why we offer Sierra engine seals and Sierra gaskets at American Trucks. These parts are made from a durable blend of materials such as polyurethane, graphite and steel to provide a reliable seal, heat resistance and strength and stability all at the same time. Our seals are built to withstand extreme temperatures and they're carefully sized to fit onto your engine in just the right spots. If you notice any of your Sierra gaskets are cracking or wearing away, you should have them replaced as soon as possible. Using our replacement parts to repair your engine can help it last longer and give you superior performance over more standard seals. They are designed to last for longer and should hold up surprisingly well overall. Add them to your pickup truck and prepare it for many years of additional performance. We have other truck engine parts to choose from as well. You can get throttle enhancement parts, power boosting parts and parts to boost cooling and efficient performance depending on what you are interested in. Invest in our engine kits and make your pickup work at a higher level than before.


Shop All Performance Parts for Trucks


Fitment Includes

  • 2019-2020 GMC Sierra 1500
  • Base, SLE, Elevation, SLT, AT4, Denali

*Please see Sierra parts pages for any exceptions.

2019-2020 Sierra Gaskets & Seals

Tell us about your vehicle

And we'll show you items that fit

Sierra 1500
Don't see Delete Question 1 of 3
Ownership does not affect chances of winning
Please complete your Sierra 1500 info

Recently Added: Sierra;Gaskets and Seals