spark plugs

[thmlrmg]

i have been using champion ql77jc4 spark plugs in my 75 evinrude 70hp until i asked for a replacement plug on here. i was refered to ngk bz7hs-10. the champion plug at walmart is $1.83 and the ngk plug is $11.73 per plug. what is the big difference?

 

[Gold Bear]

Re: spark plugs

thmlrmg,<br /><br />The big difference is about $9.90 a plug!!! LOL.<br /><br />Personally I like Champion plugs. I'm sure the NGK plug is excellent. I'm guessing that it was developed specifically for outboard engines, thus the large price. Your Champion plugs probably work in other type engine, or possibly is specified for a greater number of engines, thus the low price.<br /><br />I would buy the Champion plug if you got good service out of it in the past, and the heat range seemed OK.<br /><br />Best Regards, Gold Bear

 

[DJ]

Re: spark plugs

Thm,<br /><br />12 bucks a plug-sheesh. I wouldn't pay 12 bucks a plug if they were gold plated and had diamond encrusted electrodes.<br /><br />Stick with the Champ's. You can replace them six times before you hit $12/each. And you won't have to.

 

[grandx]

Re: spark plugs

I would quit fishin at $12/plug. I went to NAPA and bought my NGK plugs for about 1/2 what the marine shop wanted. You might give this a try.