York variable speed drive Chillers & Boilers | Parts Details 2 Available. sku: 100-1-6-B5R1T Serial number 00101H0696 Model TM503KB846 Part number 37–0 1484–102 $2750 sku: 100-10-13-B5R1T York Variable Speed Drive Model TM503KB846 Serial Number 0043H0796 Part Number 371–0484–102 $2750 I'm Interested I'm Interested Want us to contact you about this product? Enter your information and we'll get in touch with more details. All fields are required. I'm Interested Submit If you are human, leave this field blank.