Response to Hi Kevin, Yes this UST1102 motor is a direct replacement for the C48K2N143C1C. To answer the rest of your questions could you give us the pump model information, common pump names would be Hayward Super Pump, Hayward Super II, or Hayward Max Flo. To supply this information click the reply link below, also if you could send a few photos those are always helpful as well. If you send photos then take a close up shot of the motor label as well as a wide shot of the complete pump to include the pipes going in and out of the pump. To supply photos simply click the reply link below and upload your photos. Once we get any of this information we can make the proper recommendation.

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