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Replacement Plugs

3083 Views 6 Replies 5 Participants Last post by  nonnieselman
Can anyone please tell me which spark plug they use as a replacement? I've had my 05 500 S for about a year now and I'd like to replace the spark plug. Any recommendations or places to purchase? Thanks!

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Is that the same for the Foreman 450?
no, the 450 is a NGK DPR7EA-9
optional is NGK DPR6EA-9 (HOTTER PLUG)
optional is NGK DPR8EA-9 (COLDER PLUG)

NGK is differnt from other plug manf.. the higher the number the colder the plug.. BTW.
anybody else need a S-plug PN?
what is the purpose of a hotter or colder plug?
QUOTE ("harry":1f52r3no)
what is the purpose of a hotter or colder plug?
That's what i'm wonderin'. What is better? Which should you run?
im not exaclty sure either. but i think it has something to do with detonation and pinging.. but that might be with the timing also? heck i dont know! just run what they suggest.. the middle one.
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