BBT Piston Pin Bearing For Stihl 064 066 MS640 MS660 – 1122 Series, BB1179

Working on a Stihl chainsaw?

This BBT piston pin bearing is built for the 064, 066, MS640, and MS660 models—part of the 1122 series.

It’s brand new, ready to install, and comes as a direct replacement for part numbers 9512-003-3281 and BB1179.

Whether you’re rebuilding a top end or just refreshing the bottom end, this little bearing keeps everything moving smooth.

No UPC, but BBT is the brand, and they make solid stuff.

It’s a simple part but a critical one—don’t skip it if you’re in there.

Made for durability, so your saw keeps running strong.

Check your model, grab this bearing, and get back to cutting.