Genuine Oleo-Mac Chainsaw Oil Pump Worm Gear 50050025R

Fits the following Chainsaws

936 | 937 | 940 | 941 | 941c | GS37 | GS370 | GS371 | GS41 | GS410c | GS411 | GS45 | GS451 | GS940

(3/8″ Low Profile Chain)