AC Delco Rapidfires

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Posted by Walt ( on 08:05:42 06/27/07

In Reply to: Spark Plug recommendations??? posted by Jim A

For a 1993 I would put ACDELCO Part # 1 {RAPIDFIRE PLUG #25164639}in hands down! RockAuto has them for $3.65 each. Plus use the discount code posted below and get 5% off.

In my 93 K1500 5.7 I got 1-2mpg more than the standard plug and almost ran into the back of the first car I tried to pass.

96 and newer use the same plug as the factory only!


: It's time to replace the plugs in my 93 K2500 454 and was wondering what others have used that they're happy with. I'll be towing my 19' Bayliner 600 miles each way to upstate NY in mid July and would love 1-2 mpg more (wouldn't we all :>). Currently using standard resistor autolites. Thanks!

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