Maintaining control over your 2017-2019 GM Sierra/Silverado 2500HD/3500HD requires some strong and reliable steering components, and we have just about everything you need here at Alligator Performance. The stock steering parts found on your diesel truck can wear out and become less effective over time, particularly when adding larger tires or frequently navigating tough terrain. Upgrading key steering components like your truck's tie rods, pitman arms, idler supports, and power steering boxes ensures it maintains precision handling and responsiveness, even when you're out pushing things to the limit. Pair your new steering components with an aftermarket Steering Stabilizer or some new Control Arms to round out your custom GM 2500HD/3500HD build.GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.