NGK Spark Plugs BKR6EIX-11 Spark Plug

I get NGK for all my project cars. Works great, last long, and good price point.

Be careful with the plug selector on this page for these plugs. For my '97 Mazda Miata, it recommended the BKR6EIX-11, which is correct for earlier 1.6L Miatas ('90-'93), but incorrect for later 1.8L cars, '94-'97, which should be the BKR5EIX-11. Luckily, I had an old set of plugs from a year ago, and noticed the different number before I installed the 6EIX plugs I'd ordered. When I double-checked by using the NGK plug-finder on the NGK.com site, it confirmed the 5EIX was the correct plug for the 1.8 cars. (There's a reverse system on the NGK site, just insert a plug number and it'll give you a list of all the appropriate cars for that particular plug.)Amazon was great in taking care of a super quick return. The only problem was that I couldn't do a straight exchange, it had to be a separate return and new order. I'm a prime member, and they did offer a free upgrade to one-day instead of two-day shipping for the new plugs, proving once again that Amazon is really great on customer service!

I installed these plugs into my 1991 Nissan Sentra 2.0L. They seem to give the engine more response with a bit more power. Now said and done I won't be using the other guys spark plugs. Fine Job. God Bless Amazon for selling them to me. Don't forget to put a little anti-seize compound onto the threads so the plugs won't seize up and possible break in the cylinder.

As far as performance, it is definitely worth it. It has also lasted quite a while, I definitely intend to use it again when time to change them.

Great product

The listing stated pack of 4, I got 1 spark plug, complained to Amazon they reshipped and guess what I got 1 more plug. I had to insist they live up to what was listed and got 2 more. Packaging was even worse 1st arrived intact all others came loose from the boxes and rattled around in the shipping box or envelope (no consistency to how shipped). I believe the plugs survived and at some time this summer I'll install them. I thought $7 shipped was too good to be true for 4 of these and it was not worth the trouble in the end, glad I was in no hurry.

I've put this so far into a 2003 toyota matrix xrs, a mazda protege5 2002, and a lexus gs400. In just about each and every car I put them in I've felt a difference in performance, and a slight 4-5 percent increase in fuel economy. Note though the up in fuel economy was due to worn older sparks. So just remember if you're losing mpg's try swapping out sparks it will make a difference.

I bought a used Scion that had another brand of spark plug in it and it was running poorly. I ordered a set of these and now it is running great! It's got more power and the fuel mileage is back to spec level. This is the third car I've put these plugs in and I won't use anything different in my cars. They have always performed well. The only plug for a Toyota engine.