F/S: Bosch Platinum Spark Plugs (4428)

[Stugots879]

I have another set (Qty: 10) laying around if anyone needs them.

$40 shipped within the Conus.

 

[Indy]

Just for folks who don't know, the Bosch +4 plugs don't work very well with Vipers. They might last longer, but you're engine will probably be down on power and not run as smooth.
GLWS, but it might be better to just post these on craigslist and sell them there.

 

[kenphjr]

I wonder if anyone has done dyno tests with different plugs-be interested in seeing the results

 

[Stugots879]

Just for folks who don't know, the Bosch +4 plugs don't work very well with Vipers. They might last longer, but you're engine will probably be down on power and not run as smooth.
GLWS, but it might be better to just post these on craigslist and sell them there.

Post your dyno sheets please and thank you for your expert advice.

 

[Stugots879]

I wonder if anyone has done dyno tests with different plugs-be interested in seeing the results

Bosch Platinum plugs are bad according to "Indy"

 

[Stugots879]

Plugs sold to Indy!!

Thanks VCA!!

 

[kenphjr]

that's a little strange!

 

[Stugots879]

that's a little strange!

I had sold them on eBay...it was just a little sarcasm

 

[kenphjr]

you got me!

I had sold them on eBay...it was just a little sarcasm

 

[Dom426h]

Agree with Indy. Wouldnt put those in my snake if someone gave them to me.

 

[Ron]

I had a +4 set in a 300M. One of the 4 electrodes fell off in cylinder #1 and resulted in a head that had to be removed, welded and machined. A little research found that I wasn't the only one and Bosch did not stand behind it.

No Bosch for me.

 

[8.0L>1.8T]

Just for folks who don't know, the Bosch +4 plugs don't work very well with Vipers. They might last longer, but you're engine will probably be down on power and not run as smooth.
GLWS, but it might be better to just post these on craigslist and sell them there.

So, for us noobs who don't know: what is the spark plug of choice when it comes to our beloved Vipers?

 

[Indy]

Copper plugs are the best for the Viper. I replaced mine with the RC12ECC used on the Gen3.