Spark Plugs

**detailjohn** · 06-11-2009, 08:16 PM

Ok my 06 GMC is getting ready for new spark plugs, any suggestions? I have the 4.8L.

Thinking about Bosch+4....

**99'HEARTBEAT** · 06-11-2009, 08:39 PM

For me went I was ready for new plugs,I stay with A/C Delco. Iridium Plug's.But it depends on what you are looking for in a plug,and what Performance Mods you have put on your Ride.I've been pleased with the A/C Delco Plugs.I have not really looked into some of the aftermarket plugs,maybe someone else can give you some input on them

**1st Synthetics** · 06-11-2009, 08:44 PM

NGK IXIRIDIUM are great plugs. TR5IX is the plugs for your truck I think.

**2ToNe04** · 06-11-2009, 08:49 PM

i have bosch, i just replace the ones that came with my truck.

never had a problem with them

**Jimmiee** · 06-11-2009, 09:19 PM

Originally Posted by detailjohn

Ok my 06 GMC is getting ready for new spark plugs, any suggestions? I have the 4.8L.

Thinking about Bosch+4....

Iridium plugs have it hands down over platinum. The GM iridium are designed for your combustion chamber and that's what I use. Everyone has their own favorite plug but if you Google "spark plug comparison" you can read up on spark plugs and decide for yourself. Have Fun!

**cascott325** · 06-11-2009, 09:20 PM

i run delco iridium

**iPublicEnemy47** · 06-12-2009, 03:22 AM

if you get the bosch let me know how they work out im thinking of getting them for my truck

**Dr_Zero** · 06-12-2009, 11:38 AM

I went with Denso TT and have been happy with them the link below has more info

http://www.gmtruckclub.com/forum/sho...ighlight=spark

**ippielb** · 06-13-2009, 11:20 AM

I just got Bosch +4 plugs in my truck last week. I can really tell a difference in throttle response and the ease in starting my truck. I seem to get more acceleration with them too, i also got new spark wires the day after, and i noticed another increase in the same areas with new wires. I recommend them, i like mine a lot.