This intake air pressure spacer kit is designed for use with Silverado 2500HD/3500HD and Sierra 2500HD/3500HD vehicles equipped with the 6.6L V8 Duramax diesel engine from model years 2017 to 2024.The kit relocates the manifold absolute pressure (MAP) away from heat areas near the exhaust manifold, helping to reduce thermal distortion that may affect accuracy.By positioning the outside of direct exposure to exhaust gases and oil buildup, the spacer supports consistent pressure readings.Installation is straightforward—remove the factory , attach the spacer, and remount the using the connectors.No additional wiring or ECU recalibration is necessary.This kit replaces OEM part numbers 12681993 and 12707766.Package includes one MAP spacer kit.Color: Black and Silver.Material: Aluminum and plastic.