Click to expand Tap to zoom Rotary 13771 Angle Gear Box Assembly replaces Stihl 4128 640 0101 SKU 13771-RT Original price $65.00 - Original price $65.00 Original price $65.00 $65.00 - $65.00 Current price $65.00 | / Availability: in stock. Quantity Add to cart Additional information | Returns | Shipping |