You have a Nissan Titan XD Cummins with shift flair? Want a simple 10 min fix? This is the best High end Thermostat on the market! Added is our bracket to bolt it on! This will let the Nissan trans to come up to temp! Tested since they came out and worked to fix the shift flair issues! We will stock these units and also take the 3/8 hose barbs that come with them and turn them down to the 5/16 size to fit the Nissan Titan XD trans lines! Doing this makes for a way simpler install and more user friendly! No Issues with lines blowing off, Leaking, or just getting on! Plus we add in the stainless hose clamps! In all testing the 145 degree units tend to be best for 99% of all users! At this temp the trans and computer logic works best! Also works great for people that tow, race, sled pull and daily drive. Even in lower climate areas the 145 dose it job! The extra cost of these is do to the machine time we do to make the hose barbs the right size and the bracket system, Hardware, and clamps! Saves you over all time plus money! Brackets will be powder coated wrinkle black to match the frame and not stand out. No tuning needed and will work on bone stock vehicles. Should not void any factory warranty but as all aftermarket parts go will be up to the dealer! With this being one of the best top brands thermostat we back it and our set up with lifetime warranty! These are built to be High flow and lower 145 degree rating. They do flow 20gpm. The factory pump flow is only 3-5 gmp on the titan trucks!