The top 4 intercooler brands enthusiasts actually trust for the GMT800 (2001-2007) GMC Sierra 2500HD/3500HD (Duramax) — ranked by community reputation and fitment reliability.
2001-2007 GMC Sierra 2500HD/3500HD (Duramax) · Intercooler
InstantFetched 2d ago · Refreshes in 58d
Banks Power
OEM-quality fitment, proven durability, diesel specialist.
Sold direct and through authorized diesel retailers.
Mishimoto
Reliable fitment, strong thermal performance, good warranty.
Widely available through major performance retailers.
CSF
OEM-level construction, consistent fitment across generation.
Widely available through major performance retailers.
Suncoast Diesel
Duramax-specific engineering, trusted by diesel community.
Sold direct through Suncoast Diesel's own site.
Adds live pricing, recent forum sentiment, and fitment notes from real-time search.
Curious what to expect? Here's a sample report for VA (2015-2021) Subaru WRX.
Sign in to save this vehicle to your garage and get notified of price changes.