Rated 4.9 out of 5 stars.
Stihl chainsaw users, if your chain isn't moving smoothly or the sprocket looks worn, it's time for a replacement. This is a pack of THREE 3/8\ pitch, 7-tooth rim sprockets. They're designed to fit a bunch of popular Stihl homeowner models: the MS170, MS180, MS210, MS230, and MS250 (also fits the older 017 and 018). They're listed as \Mini 7 Spline\ size, which is common for these saws. The part is meant to replace OEM number 0000-642-1231. They come as unbranded replacements, new in the package. Why buy a 3-pack? It's smart! Sprockets are a wear item – having a couple spares in your toolkit means you can do a quick swap in the field and keep cutting without a trip to the store. They fit a guide bar size up to 22\. Installation requires some disassembly of the clutch side of your saw, so make sure you're comfortable with that or have a manual. A fresh sprocket reduces wear on your chain and bar, making your saw run safer and more efficiently.
