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SPARK PLUG ADAPTERS
Use these on your Model A if you want to use modern 14mm spark plugs. Just screw these into your head, and you can use any 14mm spark plug. Also available in singles for compression gauges. U.S.A.
Product List
Part #
A-12405-ADP
|
Model Year
28-34
A single plug adapter to use with a compression gauge. Adapts the 7/8-18 threads in the cylinder head to 14mm. U.S.A.
Part #
A-12405-ADP-Q4
|
Model Year
Use these on your Model A if you want to use modern 14mm spark plugs. Just screw these into your head, and you can use any 14mm spark plug. U.S.A.