We distribute A/C Selector Switch's. Pictures are provided as a reference to which part and the condition of the part you will be receiving. 209 Type CLK500 US. A/C Selector Switch. The engine types may include 3.5L 3498CC V6 GAS DOHC Naturally Aspirated,5.0L 4966 CC V8 GAS SOHC Naturally Aspirated,5.5L 5439CC 332Cu.