NGK Iridium Spark Plugs ZFR6FIX-11 (6 PCS) - Brand New Review

Excellent quality and picture. Check local parts stores for prices. They should last a long time between replacements. Highly recommended.

Installed on my 2005 Jeep Liberty. More power and smoother idle. Came a little close to the recommended distance. I only had to adjust 1 connector. I've already driven 2k km. No complaints. Jeep has over 200,000 miles on it and feels like new.

These spark plugs are some of the best I've seen. I had the originals in my jeep and replaced them with these bad guys. My Jeep immediately sounded better and my mileage increased. Would recommend them to anyone who needs an upgrade.

I installed these on my 2011 Dodge Dakota. I've heard that changing spark plugs can be tricky. So I put them on because they can last 100,000 miles. The work went smoothly. I used a thin wall magnetic can and had no problems. Spark plug wires also replaced. Rides a bit rough in cold, wet weather. Now it works smoothly. The candles were also pre-cleaned. Made my job easier.

Bought this brand for my 2008 Chevy Silverado and the spark plugs on this listing for my mom's 2003 Jeep Liberty. I've never installed them on a Liberty (it's been on my to-do list for four years), but I've installed this brand on my Silverado. In the four years they've been on my truck, they've driven less than 50,000 miles. It took months to build and I finally got my truck back. Initially the gap was 0.045, and after four years it was 0.09. That's pretty bad wear and tear. I am very…

Also installed all 6 in 2001 Acura Cl Type S. I had a Bosch Platinum Plus 4 at 10k km. Boy I'm sorry I skimped on them. I've heard they work great in European cars, but for Japan, NJK or nothing was made. I recently had a timing belt done and I haven't noticed much of a difference, but you should. After inserting these plugs, I took them out. 15 minutes drive. Walk him through all the steps. I had a 15k 5 car on a very old njk and it did a good 10k on a bosch and it was decent but the mpg…