I was just at the auto parts store to get new plugs and all they had in stock were Autolite Platinum and Bosch Platinum. I said "gimme the Bosch" and the guy said he wouldn't for my own good. Told me that the Bosch plugs will be worn out after about 4,000 miles. Not that I don't believe him, but could this really be true?

 

its not even that they wear out faster its just the bosch are going to cost you all that extra money and you will not see a difference go with a set of autolites or champions. They are cheaper and run good in these engines

 

I went with the Autolite Platinum, as if he gave me a choice. Does anyone know if there are plug wire upgrades for this vehicle?
2004 V8 4.7L 4x4 Auto Trans.

 

platinum plugs are supposedly bad on our engines, try to stick with stock champion, if not possible use autolite or NGK. FOr plug wires, you could try the taylor shorties

 

From what I've found, or haven't found to be more precise, there are no "plug wires" for the 4.7s. At least not for my '03. I guess going to the each plug has it's own coil setup, negates the need for high end plug wires? Although those factory wires are pretty thin.

 

bosch plugs have always let me down. they always seem to make my cars run rougher than the cheap autolites. im going to get iridium for my truck, but they arent cheap. i wont buy bosch again tho.

 

he's right, absolutely no need for platinums. If it was high dollar, high revving sports car would be different. Ask any mechanic, I did. As for plug wires I must disagree with HansonHVAC; shorties don't work well on a 4.7L.[8D]

 

Here's my take on the Bosch. I worked in the auto parts industry for several years and have found that the bosch, even though they are more expensive, they are a high quality plug. The Platinum refers to the coating on the business end of the plug. It's been awhile, but I believe that Bosch has also taken and coated the rod as well (the part that connects runs inside the porsalen). Lately, auto manufactures have been using Platinum plugs from the factory to be able to live up to the 100,000 mile tune-up interval, because Platinum plugs just last longer. Platinum is also a better conductor than your standard plug.

I guess it really all comes down to brand preferance. I used to drag race a 1967 Mustang and tried them all. I never really noticed a difference in my time slips. I used Autolite, Autolite Platinums, AC Delco Rapidfires, Champion, Bosch, Bosch Platinum, NGK's, even Splitfires. I always ended up going back to standard Autolite because they were cheap to replace and they always seemed consistent when I would check them after each run. With the Platinums, it was hard to tell because the non-stick tendency of the coating.

In the long run the extra bucks is worth spending on the platinums if they are going in daily driver and are happy with long lasting stock performance. But if your o.k. with changing your plugs every 24,000 miles, and want to get accurate plug readings, I would highly suggest the Autolites, or if you really want the platinums, get the Autolite AP (Platinums). Either way, Autolite is the tried and true spark plug of choice even for pro drag racers.

Hope this helps. Good Luck!!!

 

Anyone installed LiveWire brand plug wires on their Hemi?

 

Spark plugs? We don't need n stinkin spark plugs.