Item:Heater A/C Temperature Control Module Control Assembly Heater. Part Number:599-193. Compatiable with:Fit for for XL. Function: Heater A/C Temperature Control Module helps maintain the desired indoor climate. It intelligently adjusts the heating or cooling output to match the thermostat settings and current room conditions. This active management helps achieve a consistent temperature throughout your living spaces. Fitment: for 1500 2500 2002 for 1500 HD 2500 HD 2001 2002 for 1500 2500 3500 1999 2000 2001 2002 for 2000 2001 2002 for 1500HD 2500HD 3500 2001 2002 for 1500 2500 1999 2000 2001 2002 for XL 1500 2500 2000 2001 2002 Colour:Black Material:ABS Package Contents: 1 x Climate Control Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.