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01-27-2007 | 01:55 AM

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Antique

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From: Somewhere, DC

RE: DA50 replacement spark plug

Just measured 3 similar plugs.
CM6..hex is .546, OAL base to top without the washer is .985, base to end is .435
Champion Y82 is .555 hex, base to top without washer is 1.000, base to end is .439
Denso U20MU hex is .552, OAL base to top without washer is .996, base to end is .440
Not enough difference to make a difference....
A 9/16 hex socket fits all 3
Or 14 mm....

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