SOHC.co.uk Forums > CB500/550

Correct spark plugs for my 500 ?

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mickwinf:
d7es replaced by d7ea.

AshimotoK0:

--- Quote from: Nurse Julie on November 13, 2023, 02:45:14 PM ---Denso X22ES-U is the correct type.

--- End quote ---

Going to go with these Julie as heard there are a lot of fake NGK's around. Do you have a reference for ND for CB750K0 and 400/4 please?

Sesman:
I don’t believe Greenspark supply fake NGK. Just saying…..

davidcumbria:
I’ve gone for the denso ones from green spark who didn’t have the ngk in stock at the time. Run iridium in most of my bikes which definitely help starting but can’t see one for the 550.

deltarider:

--- Quote from: davidcumbria on November 14, 2023, 07:08:14 AM ---[...] Run iridium in most of my bikes which definitely help starting but can’t see one for the 550.

--- End quote ---
Any new sparkplugs will help starting. Some in the German forum have tested iridium plugs but were not impressed. These plugs will do well in modern bikes however which run much leaner than our filthy beasts.

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