2017 and later GM 6.6L L5P and L5D Duramax engine Injector Fuel Return Line Seal Kit. Alliant Power # AP0133 Fits select: 2017-2020 CHEVROLET SILVERADO, 2017-2020 GMC SIERRA

All Alliant Power Kits are backed with a 24 month unlimited Mileage warranty. Alliant Power Products are backed by First Class Technical Support. Alliant Power supplies over 200 high demand parts for over 20 different engine applications. Made in the U.S.A. and built to OEM specifications and testing. Authorized Alliant Power Dealer: Diamond Diesel and Turbocharger Service. Fits Select: 2017-2020 CHEVROLET SILVERADO 8 Cyl 6.6 L 2017-2020 GMC SIERRA 8 Cyl 6.6 L and more - add your vehicle to our fit widget to check