NLA-34-144 Rear Axle Bearing Cover O-Ring 2 required per car, Fits 356, 356A, 356B. 35634144 64434144 NLA34144
For Pre-A thru 356B T-6 -- This large o-ring is used in the rear axle in all models with drum brakes. See diagram below, #11. O-ring goes over the bearing.
Note: This o-ring is included in our Rear Axle Seal Kit, NLA 34 411