1、OE Number: The referencing OE number of this climate control module are 599‑5511, F21 1007 1, F21 1025 100, F21 1025 110, F21 1032 100,5995511, F2110071, F211025100, F211025110, F211032100. 2、Fitment: The AC heater control switch panel is a replacement for Kenworth T300 C500 T600A T800 W900 2002‑2006, please check the model and year before ordering. 3、Enhanced Driving Experience: By allowing easy and effective adjustment of car temperature, our climate control module not only adds to your comfort but also improves your overall driving experience. 4、Effective Temperature Control: This climate control module acts as a practical HVAC heater control switch panel for your vehicle, enabling proficient control and adjustment of cabin temperature. 5、Premium Material: Constructed with high grade, wear resistant materials, the climate control module stands in line with original specifications and functionality, ensuring a durable and lasting performance.