These plugs are great for the cheaper side of plugs for a 5.7. However, buyer beware that you’ll need to purchase a spark plug gapping tool before you install these into your engine. All the spark plugs I received were anywhere from .032 to .041. The gap for a 5.7 Challenger is .045. So you’ll have to gap your plugs. Easy fix, just takes time. TRQ has great, lasting products but for something this small on a metric scale, I expected them to be a little off.
Posted by Connor (Delaware, OH) / May 27, 20232015 Dodge Challenger