GMC Sierra 2500HD/3500HD Headers.
We track 11 GMC Sierra 2500HD/3500HD headers from 4 brands, $26.99 to $1,526.78 as recorded 2026-10-23, each at its lowest price across the retailers we compare. None of them publishes a horsepower figure yet.
Replacements for the factory exhaust manifolds, freeing exhaust flow right at the engine.
Questions about this category
11 parts
GMC Sierra 2500HD/3500HD or Chevy Silverado 2500HD/3500HD?
The GMC Sierra 2500HD/3500HD and the Chevy Silverado 2500HD/3500HD are closely related trucks, and many parts are sold for both, so each one gets its own page here. All 11 headers on this page are also listed for the Chevy Silverado 2500HD/3500HD. The Chevy Silverado 2500HD/3500HD page lists 4 that are not on this one. Check the fitment notes on each part before you order, because engine and trim still matter.
Gains shown are manufacturer claims, labeled community estimates, or independent tests, as tagged on each part. See the full catalog to filter by engine, drivetrain, and more, or the price index for what this category typically costs.