Briggs & Stratton Gasket Set 490525 , 494241, 480-149

Gaskets were of good quality and fitted correctly. A square Oring was left over from the installation in an earlier 280000 series motor. Did not find where the gasket should have been used otherwise no problems. Will be getting another set to rebuild a second motor shortly. A parts list would help with the identifying of the Oring installation.