Reply To: Radiator Cap

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February 3, 2017 at 2:09 pm #404068
William Morris

For a 12 cylinder you need a cap like this.

https://www.ebay.com/itm/VINTAGE-CAR-TRUCK-OR-TRACTOR-RADIATOR-CAP-/332105597059?hash=item4d53094083:g:vHIAAOSwAuZX0z6m&vxp=mtr

Single lever with the inside grip lugs. The dimensions in this auction look right. I measured the OD of my cap and it was 2 7/16.