lf no.：fk-4005a-1
cross reference：600-185-2510 pu1839 11110283
engine：kobelco sk350-8 dedicated
largest od: 278 (mm)
overall height：420/ 405 (mm)
external diameter :150
lf no.：fk-4005b-1
cross reference：
engine：b small outer diameter 1mm
largest od: 148 (mm)
overall height：396/ 390(mm)
external diameter :110