Oil Pump Worm Gear & Piston Set for STIHL 041, 041AV, 041FB, 041G Chainsaw Parts
For Stihl Chainsaw Models: 041, 041AV, 041FB, 041G. Both are steel. The worm has a bronze bush fitted inside. Worm Gear: 1110 640 7100, 1110 640 7101. Pump Piston: 1110 647 0601, 1110 007 1005.