🔥 Pack of 4 Denso U-Groove K16R-U Spark Plugs: Upgrade your Engine Performance Review

After installing these spark plugs, my analysis showed that my car's ignition performance improved significantly. The engine runs smoother and there's an increase in acceleration power. The price is reasonable and installation was a breeze. The only downside is that it might not be compatible with all types of cars. Overall, I would highly recommend these spark plugs for anyone in need of replacement parts for their ignition system.

I usually only buy ngk spark plugs but I couldn't find any ngk spark plugs for our mowers so I bought them and they worked great

Drove 5000 miles with these OE replacement spark plugs in the first generation Scion xB with no problems. The gap dimensions are ok, no adjustment necessary. No platinum/iridium upgrade required. Changing every 30,000 to 50,000 miles is easy and takes no more than 20 minutes.