Champion Copper Plus 408 Spark Plug (Carton 🔥 of 1) - RS14YC: Unbeatable Performance at Your Fingertips Review

Used for my car but have to go to auto parts to get two more spark plugs because two of them are different, don't know what happened there

Description/Title says "Box of 4" so I placed an order for 6 thinking I was going to get 24 of these and only 6 in 6 different batches receive.

Great spark plugs for my 1990 John Deere 420 garden tractor. Easily torn and installed. The engine now runs smoothly. I've been using Champion spark plugs since I was a teenager and since my first car.

I have a 1987 John Deere 316 lawn tractor that I remember used Champion RS14YC spark plugs. They last a long time, they are well cleaned during maintenance even with long-term use. Unlike some other spark plugs I've used in my cars, they adjust well to the spark gap setting. I have only good impressions of this spark plug model.

They generally work *well*. I completely tuned my truck and then drove 1200 miles (in one week). While driving, one of the spark plugs failed and actually melted in half while in the engine. It caused an engine failure, ruptured the lightbulb under the hood, melted the corresponding spark plug wire and blew out the underside of my hood. I was able to contact the nearest mechanic on the highway and they confirmed what happened. That way I won't risk my car again.