Bosch Automotive OE 9600 Fine Wire Double Iridium Spark Plug - Single Review

Bosch has finally entered the 21st century with the addition of iridium spark plugs to its range. This is a great spark plug as it combines iridium in the center electrode and platinum in the ground electrode which should give this spark plug a lifespan of up to 100,000 miles. Some plugs do not have platinum on the ground tab, which wears out faster than the center electrode. Nice $2 discount on top of that.

Ordered for Prius 120,000 miles service (need to be replaced first time!). Great price combined with a discount offer. A bit tricky due to the deep cutouts for the plugs alone, and removing/replacing the igniter for the #4 plug on the right is tricky due to gap issues. But did, works great. Suggestion from a mechanic friend: get a metal anti-seize compound designed for plugs and apply it to make installation really easy (like oil) and hopefully a lot easier to remove next time too make (WAY in…

These spark plugs perform much better than I expected when I fitted them to my car. I haven't installed new spark plugs in several years and immediately noticed a significant improvement in engine performance. Also, it seems to run much quieter and I experience much better fuel economy. The car didn't work that well even when it was brand new. I could buy a much cheaper spark plug but in this situation buy the best one and you will never be disappointed. They were very valuable when I bought…

I buy Bosch spark plugs because they are official Hendrick Motorsports spark plugs and if they are good enough to take this team to victories and championships they are good enough for mine Cars. Great price and fast shipping from Revain, they were easy to install on my wife's Scion XB and definitely improved performance and fuel economy. Not a BIG difference, but I could tell. The fact that these iridium candles last up to 100,000 miles is a nice plus too - you pay a little more, but they give

At the moment I think they are a definite improvement over Bosch Platinum +4 connectors. It may not be for every car. I have a 1999 Tacoma V6 which I believe is designed to be a poor candidate for a 4 LED connector. In any case, I got a small increase in gas mileage from these plugs (I've been tracking gas mileage). from 2008. The improvement is about 0.5mpg. Not much, but enough to extend the life of these spark plugs). did not fall. I expect them to last longer than platinum connectors since…

I researched these spark plugs fairly thoroughly before purchasing them. I recommend this brand and this fork. The plugs I received were exactly what I ordered. They fit perfectly on my high mileage 2006 Hyundai Tucson. They were correctly pre-sealed and all four stoppers in my package had the same gap (good quality control). No problem. I immediately started saving fuel. About 15%-20%. It's not a lot in dollars and cents but to me it shows they are better than my old worn out plugs. In the…