201-41980 Inner spring, used on the TS and TR series line of engines. ST2 This will be item number

This will be item number 13 in the Read drawing

This option is $1850

Check the 3rd picture

754-44290 Stem

201-41980 Inner spring, used on the TS and TR series line of engines. ST2 This will be item number201 41980 Inner spring, This is considered a "inner spring" and is listed in the last column. Match it with your build number. Not all builds use this part. This spring will not show up in any Lister Petter parts drawings, but will be listed by it's part number on pages 40 and 41 in the TS TR Master parts manual. This spring is used on the TS and TR series engines. Make sure you confirm your build code as there are different springs available.