Description Fits Year Make Model 2007-2018 Dodge Ram HD 6.7L Cummins Note: This horn will not fit 5th gens without modifications Two of Smeding Diesel's most popular products within the Cummins world, their TrueFlow Intake Horn and Grid Heater Delete, conveniently in one little package for you! Eliminating the restrictive factory horn and the dangerous factory grid heater that restricts air flow and can cause a build-up of soot, leading to potential damage to your engine. These two parts work hand-in-hand to provide you with increased air flow for enhanced power, efficiency, and a slight increase in fuel economy! Part Number: 0718TFB Features Doubles the flow of your factory horn Increases throttle response Includes all hardware and gaskets needed Increases boost Aluminum cast for superior cooling and strength 5 - 1/8" all-purpose NPT ports Cummins TrueFlow Intake Horn Cummins Grid Heater Delete Notes This horn will not fit 5th gens without modification.