Denso W16EXR U Traditional Spark Plug Review

Despite checking three times that these spark plugs fit my Suzuki, they didn't fit. Not even close. As for the quality, who knows?

I used it on my forklift because it matched the number on the spark plug exactly and worked like clockwork. I saved myself the $200 my mechanic wanted to install.

OEM spark plugs. It has been in my Toyota pickup for two years now and it still works perfectly. I use my pickup for my daily commute to work. This is an original 1983 Toyota Pickup Spark Plug.

Good end caps - THEY ARE NOT PRE-LIMITED - so you will need to insert the gaps yourself to ensure proper performance. Overall, it makes a high-quality impression. Original equipment fitment for my 1993 Toyota pickup.

Excellent spark plugs. I've been using NGK on my 22RE for years. NGKs don't knock, but these candles smoothed out the classic 22RE rumble at 750 rpm at idle. Not gone, but a lot less than NGK. Everything else is the same in terms of performance.

They plug holes in my engine and spark when powered. I'm deducting a star for reputation alone. They worked great for me but weren't missed AT ALL. I also heard bad things from the mazdaspeedforums community about the Denso crash so I took them off and went to NGK. I suggest everyone else do the same for the Mazdaspeed3, 6 and CX9.