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!

The media could not be loaded. This set of 8 spark plugs was installed in a 2004 Cadillac DeVille with the 4.6L North Star engine. These are quality spark plugs that will help my engine run at peak performance. I like to change my spark plugs once a year and at the price point of these plugs, it doesn't break the bank to change them. Also, by changing the plugs every year, and putting some anti seize on the threads, I don't have to worry about breaking off a plug in the cylinder head, that is a very expensive repair. With aluminum heads that are used on cars and trucks, spark plugs seizing into the heads is a big problem now if plugs aren't changed more often. I am very happy with these NGK spark plugs and I would recommend them to anyone who needs to change their spark plugs.

It Arrived on time and works well thanks.

Got one side replaced and they work fine. Thought I had a fouled plug but it is looking like it is the fuel pressure regulator- but these plugs work great and are a great value.

No issues

5.3 great plugs noticeable difference when switched to ngk

They are just like I thought they would be

Works