These retainer plates are used in conjuction with brake kits that use weld on caliper brackets, or rearends with no brakes. These plates have a machined relief in the back of them allowing this plate to retain the axle bearing at the proper preload and not rely on any other plates or brackets being between the retainer plate and the housing end. These plates fit late model large bearing Ford style housing ends only. Bolt hole spacing is 3 9/16" c-c horizontally, 2" vertically, and holes are 3/8".
Internal axle seal used with Currie large bearing housing ends and sealed (ball) type axle bearings.
National Seal PN 450067