Great price for OEM spark plug to keep engine running smoothly.Mower runs like new!Perfect fit for honda lawn mower.My Prius owners manual says to change the plugs at 100K miles. Wow, must be great plugs. So at 116K, I decided to change them. No, this isn't a DIY project for just anyone. A lot of the car has to be disassembled before you can reach the plugs. A couple of Youtube views convinced me I could do it. It was actually easier than it looks, too. My old plugs came out with just a little effort and the new ones went it easily. Could I tell the difference in the car - no. But I know it now has new plugs that'll last another 100K miles and it didn't cost me a zillion dollars to have a mechanic shop do it, either.quick shipment and exact fitThe dependable Honda has been doing great. 1 pull starting since we got it after we got married. It’s been 22 years and this year the old girl didn’t want to startYanked the old plug and saw that it was pretty worn. Took some emery cloth and polished the electrode and got by for the weekend. Wasn’t bad if I kept the engine warm between startsNew plug arrived today. Put some anti-seize grease (I would recommend everyone do that, so plugs don’t weld into the motor over time). First pull she fired right up againJust a few tips. Keep an extra air filter on hand. You never knowPut Pure Gas in your mowers. Ethanol will tarnish up the carburetors terribleDrop some fuel stabilizer in your fuel can. Can’t hurt you, and saves the gas from going bad (and it WILL go bad)This is the plug that the owners manual calls for but not what the previous owner had in my car.I can notice an increase in power and I hope to see some increase in my MPG. Very satisfied with these plugs and at a decent price. lIt screwed in the cylinder just as I expected it to. The engine started right up and ran like a top. A satisfied customer I am.As advertised. Genuine partThis plug did not fit what was meant to as description saidVery disappointed