Allison 10L1000 Transmission Coolers

Your big Duramax L5P and its Allison 10L1000 transmission sure don't slouch and both make a lot power and help your tough Silverado or Sierra build put it all to the ground. The only bad news is that both your motor and transmission generate a ton of heat doing it, and things get worse when you start to tow heavy or add a bunch of power to your Duramax build with powerful tunes, big turbos, and whatever else. Make sure you keep your Allison transmission's temperatures under control with a 10L1000 transmission cooler from Tier One! These Allison 10L1000 performance transmission coolers are much more effective at dissipating heat than the stock transmission cooler, giving you lower running temperatures and reducing the chances of damage or ending up in limp mode. We have both 10L1000 drop-in transmission coolers, as well as 10L1000 auxiliary transmission coolers available to get your Duramax L5P the perfect transmission cooling setup. Make sure you also check out our Allison 10L1000 Transmission Pans or our Allison 10L1000 Torque Converters!