Planning on replacing plugs/wires on my 2009 Express 2500 6.0L V8 Mileage: 93,800 and looking for advice on high quality/performance replacements. I'm considering BOSCH 9602 OE Fine Wire Iridium spark plugs. But, what wire set: BOSCH, ACDELCO, UNITED IGNITION WIRE, Other? I have the Melco ignition coil (as opposed to Delphi). My GM shop manual indicates that each one uses a different cable length seal to seal. The current ACDELCO plug wire appears to have a heat shield on the plug end. Does the heat shield come off with the plug wire or is this separate? Does the heat shield help extend plug wire life?

Thanks!

 

Which one is on sale? lol. I wouldn't buy too much into differences.
I have heard that sometimes Bosch is a bit cheaper for a reason. Delco is more expensive etc....

 

I can't believe it matters. I changed the original distributor cap, plugs and wires at 100,000 miles as preventive maintenance.