Stihl Oil Pump Drive Gear
This is an aftermarket oil pump worm gear.
Suitable for the following model Stihl chainsaws:
Stihl 029, 029 Super, 034, 034 Super, 036, 039, MS290, MS310, MS311, MS340, MS360, MS390, MS391
OEM Stihl part number: 1125 640 7110