2020-2021 Silverado & Sierra 1500 3.0L Duramax Transmission Coolers

Your 2020-2021 Silverado & Sierra 3.0L Duramax and its 10L80 transmission pack a ton of punch and your tough diesel truck is more than capable of towing extremely heavy loads, ripping around off-road, and tearing it up on the pavement. That being said, your diesel Silverado or Sierra build gets pretty hot when out there doing work, which isn't great for its 10L80 transmission. Tier One's selection of 2020-2021 Silverado & Sierra 1500 3.0L Duramax transmission coolers help keep your 3.0L Duramax's 10L80 transmission much cooler than stock, even if you're pushing your truck hard. These 3.0L Duramax transmission coolers are much more effective at dissipating heat than stock, and we here at Tier One have both 3.0L Duramax drop-in transmission coolers and 3.0L Duramax auxiliary transmission coolers available so that you can find the perfect transmission cooler solution for your Silverado or Sierra Duramax build. Also check out our 2020-2021 Silverado & Sierra 1500 3.0L Duramax Transmission Pans or 2020-2021 Silverado & Sierra 3.0L Duramax Thermal Bypass Valves!