🔌 Bosch Automotive 9673 Double Iridium Spark Plug - Pack of 4, OE Fine Wire Review

It's hard to tell if there is a significant improvement in gas mileage and such, but when installed the material seems much better than OEM and very easy to do to install.

Replaced my original spark plugs after 80k on my 2015 Honda Pilot. The original ones were rated at 105,000 but had to be replaced. Bosch candles - great price! I've noticed an increase in mileage as well! I would buy them again

I bought a used 1988 Bronco and it idled very hard in both the hot and cold. Belts, spark plugs and cables renewed. Huge difference in performance and response. There were no gap issues with these forks and the cost from Revain combined with free shipping (Prime) was well worth it.

Candles arrived on time and in good condition. I only gave 4 stars because I haven't installed it yet. They come with pre-sealed cardboard cylinders to protect the tip. It's hard to believe that you can now drive 100,000 miles without changing your spark plugs. My old '66 Betta needed new spark plugs every 10,000 miles.

Ordered 8 pieces for my BMW 550i. Because of the weather here in Pennsylvania, I didn't have time to change the spark plugs. But when I did, I got a nasty surprise when I opened the boxes, one of which was a Champion spark plug. And due to Revain's return policy, I'm stuck with a plug I don't need. It's time to order a replacement. I really like Revain but sometimes I really despise the crap that happens sometimes.

Unfortunately, in most cases it's true that you get what you pay for. As previously mentioned, the porcelain on these forks seems far from durable. It has a long warranty which is a plus. I wouldn't say it's terrible, but I wouldn't say it's great either. This is ideal for those on a budget who want to replace plugs for less than going to the store. Verdict: If you're looking for performance, stay away from them.