STIHL Oil Worm Gear Replacement – Fits MS390 MS290 029 039 MS310 – BBT 1125-640-7110

If your STIHL chainsaw's automatic oiler isn't working right, this little worm gear might be the culprit.

It's a direct replacement for the OEM part 1125-640-7110 / 20209 and fits a ton of popular saws like the MS390, MS290, 029, 039, and MS310.

Made by BBT, it's a solid mix of plastic and metal to get that oil pumping where it needs to go.

Brand new and ready to drop in.

A worn gear means a dry chain, and a dry chain means trouble.

Swap this in and keep your bar and chain lubed up for those long cutting days.