Review on 🔥 DENSO #3417 Iridium LONG LIFE Spark Plugs - SK16HR11-4 PCS Brand New, High-Quality Performance Plugs by Mike Pearson

Bought 4 packages. Above all. The distance between the gaps is far, far from 0.043. It was closer to 0.03. After adjusting the gap for all 4 plugs to .043 and installing 3 of 4, the 4th and final spark plug I tried to install had bad threads. As a result, I put the old ones back and went to the auto zone. The plugs were present and as you can see in the photo the boxes and protective case are different. One from Revain has a plastic sleeve and one from Revain has a cardboard sleeve. Also, AutoZone forks originally had a predetermined gap. I can't believe this bad fork ended up in the hands of quality control. Someone with less patience could have force-fitted the faulty connector, messing up the threads on the motor head and pinching the connector.