091 FRONT MAINSHAFT BEARING MODIFIED FOR HEAVY DUTY APPLICATION. NOTCH AND BEARING CAGE FACE THE UNLOADED DIRECTION, THRUST SURFACE MACHINED OFF, USE WITH LATE 4TH GEAR THRUST WASHER, PART # 002-311-151-A (SOLD SEPARATELY) NOTES: BEARING MODIFIED FOR INSTALLATION WITH BEARING CAGE, NON-MACHINED SIDE OF INNER RACE, AND NOTCH ON OUTER RACE ALL TO BE FACING 4TH GEAR. A KEY LOCATING THE BEARING ON THE NOSECONE SIDE OF THE GEAR CARRIER IS NOT USED IN THIS APPLICATION.