FINALLY!
Now you can replace or add these hard to find Instant Anti Reverse Bearings in Ambassadeur reels.
Bearing can be added to older models with the 'hump' in the side handle-side plate, not older than that, meaning approx. 1988 and newer Abu's can be retrofitted with this far superior system. To upgrade a reel like the Abu SIX or FIVE, for instance, you'll need this bearing, and these part numbers as well:

• 22001 Sleeve
• 20960 Top Drag Plate
• 5131 Spring Washers (2pc needed)
  Keep in mind, you'll need to press this bearing into the sideplate, so you will also need a press or a solid work surface and a socket about the same size as the outside of the bearing OR you can get our custom made tool kit to ease the install or removal process: Abu IAR Bearing extractor / installer