This kit allows TXV replacement on all 5 ton RCFA/RCSA indoor coils regardless of original TXV manufacturer. This kit also allows conversion from R-410A to R-22 of 5 ton RCFL/RCSL indoor coils with AC, AU or BC suffix. For RCFL/RCSL coils with CU or CC suffix, use 611066. This part has been replaced by RXCT-EBC.