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Early Radiator Cap with a male thread

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Hello my old car friends,  I am looking to purchase a radiator cap for a 1922 Hudson.  The attached photo shows the top neck that the cap threads into.  I am looking for any cap that would fit.  The I.D. of the neck is about 1 7/8".  "What have You ?"  thanks,   Don   740-816-4284


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Hello John,  Thank you for your response.  I would guess there were not many different thread sizes for radiator caps.  I am building a 1922 Hudson fair grounds racer and plan to use a Hudson Moto Meter on the cap.   Could you sends pictures and price on yours.   Thanks,  Don  Feeney

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