spark plug type, # 450x

so i have a few hundred dollar gift card buring a hole in my pocket so i am buying stuff that i dont really need but might come in handy like a spark plug. I cant find the owners manual for my 450x. Anyone know what plug it takes.

Standard IFR8H11 (NGK) or

VK24PRZ11 (DENSO)

Optional IFR9H11 (NGK) or

VK27PRZ11 (DENSO)

thank you sir

Just a suggestion... why don't you take some of that money burning a hole in your pocket and buy a service manual?

Just a suggestion... why don't you take some of that money burning a hole in your pocket and buy a service manual?

LOL...

idid, they are back ordered

Hi ... need an information about sprak plugs

What is the difference between these :

Standard IFR8H11 (NGK)

Optional IFR9H11 (NGK)

:thumbsup:

THX.

Hi ... need an information about sprak plugs

What is the difference between these :

Standard IFR8H11 (NGK)

Optional IFR9H11 (NGK)

:worthy:

THX.

heat range :thumbsup:

The optional plug, IFR9H11, is a colder plug. I've never used one so I can't say how it would affect performance, starting, etc. The standard plug has always worked well for me.

Thanks for the answer !

:thumbsup:

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