Can someone please tell me the new equivalent spark plug to a Champion C4?
Answers:
A quick google search brough up this:
Champion W14. 7/8" SAE x 5/8" reach
Equivalent to Champion C4, C5, ICOM.
KLG A5. Lodge CT
Taken from http://www.vintagemotorspares.com/phdi/p.
W16Y, stock # 561
http://www.championsparkplugs.com/result.
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