NGK 3951 Spark Plugs TR55 (8 Pack)

I am thoroughly impressed with the NGK 3951 Pack of 8 Motorcycle Copper Spark Plugs (TR55) for several compelling reasons. Firstly, NGK's reputation for quality precedes them, and these spark plugs live up to the brand's renowned standards. The copper core design ensures excellent conductivity and heat dissipation, which is crucial for maintaining optimal engine performance and longevity. Secondly, installation was a breeze. The plugs fit perfectly into my motorcycle's engine without any issues, thanks to NGK's precise manufacturing and adherence to OE specifications. This made the replacement process straightforward and hassle-free. Thirdly, performance-wise, these spark plugs have significantly improved my motorcycle's engine responsiveness and fuel efficiency. Whether I'm cruising on the highway or tackling challenging terrains, I've noticed smoother acceleration and consistent power delivery throughout the RPM range. Moreover, durability is another standout feature of these spark plugs. They have demonstrated exceptional longevity, holding up well under various riding conditions and environmental factors. This reliability gives me peace of mind knowing that my bike's ignition system is in top-notch condition. Lastly, the value for money is undeniable. With the NGK 3951 Pack of 8, I received a cost-effective solution that not only enhances performance but also offers long-term reliability and durability. In conclusion, if you're looking to optimize your motorcycle's engine performance with a set of spark plugs that deliver on all fronts—quality, performance, reliability, and value—look no further than the NGK 3951 Motorcycle Copper Spark Plugs (TR55). They have earned my highest recommendation without hesitation. Five stars!

I installed these in my 2002 Ford Mustang GT. They came gapped at .054". I checked each one to be sure. Its actually my recommended gap so I didnt need to make any adjustment. Easy to install I also used some anti sieze just to make it easy to remove layer. They looked to be a very well put together plug. I believe these will last a few driving seasons. My car idle smooth and had no misfires. The strong pulling was there felt like a new car again!

Great quality. Great price. My 01 mustang gt is running awesome right now.

I installed these spark plugs in my 1999 Cadillac DeVille, and the improvement was immediate. Before replacing the old plugs, my car ran pretty rough. Acceleration was sluggish, takeoff from a stoplight felt painfully slow, and it honestly had no “get up” at all. After installing these, it’s like driving a completely different car. The takeoff is smooth and responsive, and the acceleration is noticeably stronger. It finally has that power back when I press the gas. No more crawling through intersections. Installation was straightforward, and the quality seems excellent. If your vehicle is hesitating, running rough, or lacking power, I highly recommend giving these a try. They made a world of difference for mine.

Great price. Worked with my truck. Double check the gap.

Bought these for my 01 express 1500. I bought a crate motor 5.7l years ago and new transmission. It has been sluggish. Put these plugs in and woke my motor right up. I went to pull out of my driveway and normally I have to step on it to get going, I did a burn out with no problem. I will never use another brand, NGK is the only way to go.

Worked beautifully, van runs 100% better.

1998 Chevy C2500 Cheyenne Truck 5.7 Vortex liter gas engine fits and works well.

Arrived in a timely manner, and at a good price. Thanks Amazon! Living in a smaller community means limited access to many many products. On line shopping has saved the day once again.

Amazing quality and fitted my ford mustang gt 4.6 v8 perfectly. Plug and play

The best product, yes, this is what we are looking for, and the price is reasonable

EASY PROCESS FROM PURCHASE TO DELIVERY

Work well in my Ford Crown Victoria. Word of advice, blow the plug wells out with air after removing the plug wires, and chase the threads before installing these if the spark plugs have not been changed in 5 years or more