This Zeki Turbo T4112-01 is a direct replacement equivalent to the BorgWarner S300 Turbo Model. Application for John Deere engine 6081H 8.1L for tractor. Corresponding part numbers include: 177272, 172239, 173147, 173148, 173149, 173378, 176001, 176605, RE508711, RE508029, RE515519, RE515520, RE515521, RE517368, RE529114, RE501668, RE534396, RE533201.