Replacement for Spartan Mowers CARB- RZ-C, RZ, RZ-PRO. Replacement for Spartan Mowers CARB- RT-PRO, RT-HD, RZ-HD. Replacement for Spartan Mowers CARB- SRT-HD, SRT-SXE. Replacement for Spartan Mowers EFI- SRT-XD, KGZ_XD. Note:Does Not Fit Spartan Shield or Defender Models. This product can expose you to chemicals including Chromium (Hexavalent Compounds). Which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to California goverment website, you can search California P65Warnings. Thanks for purchasing ^-^.