DocRebuild to be auctioned on EBA
65-66 PB Master Cylinder NOS 5467084
Original GM part. Never mounted. Color is Black, however I had to lighten up some views to show the interior and features. The ID marks in this view are hard to read but appear to be "F OD2 R O o". The O's appear to be the screw heads that hold the ID marking devices in the casting mold.

In picture #2 the two semi circle trademarks of Delco are followed by the DELCO MORAINE name; then 5467084 and 1 DIA.

Picture #3 below shows the internal bore. Regretfully it does not fully show the nature of this bore, which is shiny and reflective as would be expected of an unused master cylinder. There is no internal piston assemblty or seals included. Decades ago I sent the pistons to a screw machine manufacturer and they were never returned. However these pistons have been reproduced by another vendor and retail for something like $30, however do not hold me to that price quote.

Picture #4 below shows the two reservoirs which have never been filled with brake fluid.

Photo #5 show the lousy clumped paint that was applied by Delco. The ID of the threaded brake line bores is 3/8 inch which I believe is for the later second design 1/4 brake lines lines.

 Photo #6 shows the two mouting bolt holes which have never been scarred as occurs when as spilt lock washer is mounted.

This part has the patina of a 40 year old shelf worn item that should have the exterior surface cleaned with a Brass brush and repainted Black for cosmetic appearance. The two plastic caps are also shelf worn, and are available in re-issue today as pristine parts.