Fits the Following Chainsaws
Husqvarna 50, 51, 55, 55 Rancher, 154, 254 (Before Serial Number 345-0001), 262 (Before Serial Number 345-0001)
Jonsered 490, 590
Partner P400, P500, P5000, P5100
Poulan Pro 325
Fits Crankshaft Diameter .500 (1/2")
Drive Sprocket Bearing ORF 11893
Rim Spline Size Small 7 Tooth
Recommended Rim Spline Replacement ORF 11892