Up for Buy-It-Now is a new old stock 8" clutch disc, Willys part number 638999. This item was obtained from an old service garage and is not a newly remanufactured part. According to my vintage manuals, this is used on the following models and years:
1937-1942 Willys Four, Overland Four and Americar Four
As mentioned above, the disc has an outside diameter of 8" It is in brand new, never used condition and shows no indication of ever being mounted or installed. It does however have two cracks to the top facing from many years of shelf storage. One cracks is cracked through and the other is partial. Most likely the facing will need to be repaired or replaced before installation. Cast on the piece is Atwood-Thelander Hydro Dampener Auburn MFG. Co. Auburn Indiana, Div. Atwood Vacuum Mach. Co. There is an original handwritten parts tag still attached to the piece.
Please feel free to E-mail me questions. International bidders are always welcome. Thanks for looking!!!