PROVEN PART 

18" CHAINSAW BAR

PITCH: 3/8"

GAUGE: .050"

DRIVE LINKS: 66

BAR TYPE: RN

MOUNT TYPE: SN (12.1mm) (.475")

OREGON MOUNT: D025

REPLACES OREGON BAR: 180RNDD009

FITS THE FOLLOWING MODELS:

STIHL MS240, MS241, MS260, MS260 PRO, MS261, MS270, MS270C, MS270CQS, MS271, MS280, MS280C, MS280CQS, MS290, MS291, MS310, MS311, MS341, MS360, MS360 PRO, MS360QS, MS361, MS361C, MS362, MS381, MS390, MS391, MS440, MS441, MS460, MS461, MS650, MS660, MS66