STIHL Chain Tensioning Gear OEM Part 1123 660 3001, Fits MS 170, MS 231, MSA 140 & More

Genuine STIHL Chain Tensioning Gear – OEM Part Number 1123 660 3001.
This original STIHL tensioning gear is a critical component of the chain adjustment system. It works in conjunction with the tensioner screw to move the guide bar and control chain slack precisely.

Used in a wide range of STIHL chainsaws and electric models, this small gear ensures smooth, reliable chain tensioning and helps prevent bar and chain wear.

🔧 Technical Specifications:
• Part Type: Chain Tensioning Gear
• OEM Number: 1123 660 3001
• Material: Hardened steel
• Function: Transfers motion from the tensioning screw to the guide bar slot

✅ Ensures smooth chain adjustment
✅ Genuine STIHL OEM part – precision fit
✅ Essential for bar alignment and chain safety

🧩 Fits the following STIHL models:
017, 017 C, 018, 018 C, 023 L
MS 170, MS 170 C-E D, MS 170 2-MIX
MS 171, MS 190 T, MS 210 C-BE
MS 231, MS 231 C-BE, MS 251
MSE 140 C-BQ, MSE 170 C-BQ, MSE 190 C-BQ
MSA 60.0 C-B, MSA 80.0 C-B, MSA 140 C-B