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The proper functioning of an engine depends on keeping both gases and fluids neatly contained in certain areas, at an appropriate pressure – and 2014-2017 gaskets & seals prevent leaks that could disrupt those balances in your GMC Sierra. For example, when you’re upgrading your pickup’s cylinder heads to handle higher pressures resulting from boosted power, the multi-layer steel head gaskets sold on AmericanTrucks makes the modification much more successful. These gaskets are built tough to handle bigger pressures, with a steel core sandwiched between layers of fluoroelastomer rubber that provides the necessary seal. They can stand up to temperatures as high as 482° F. You can find other gaskets and seals on this site, too, including oil pump installation kits that strengthen the gasket sealing to make sure a stronger pump doesn’t make oil squirt out over your engine (or suck in air through a weakly sealed seam).

Fitment Includes

  • 2014, 2015, 2016, 2017 & 2018 GMC Sierra 1500
  • Denali, SLE, 1500, and SLT Sierras
  • Engines: 4.3L EcoTec3 V6, 5.3L EcoTec3 V8, 6.2L EcoTec3 V8 Sierras

*Please see Sierra parts pages for any exceptions.

2014-2018 Sierra 1500 Gaskets & Seals