[QUOTE=Whytep38]So what's the number for the Champion truck plugs for a 2.4L? Every search I've done on this site and others lists the Champion truck plug number for a 4.0L, but not for a 2.4L, which is what I have. My other searches show NGK/ND/Accel/Bosch plugs for the 4.0L are different than those for the 2.4L. Based on that info, I'm thinking the two engines use different plugs.
But the one thing I can't find is the only thing I'm searching for: the right Champion truck plug for my 2.4L. If I could get that info, I'd be grateful. [Quote]
You're right, the plugs for the 2.4L motor in the 2003 and up Wrangler SE are completely different than the plugs for the six cylinder motor.
The number for the OEM Champion plug in the 2.4L is RE14MCC5.
When the Champion plugs fail (there is a TSB on this so a number of them must be failing), the dealer special orders, directly from DXC, the NGK #LZTR4A-11 under part number SP-LZTR4A-11. The "SP" stands for "service part" but the plug is the same one you can buy from Sparkplugs.com.
DXC is replacing the Champion plugs with NGK plugs for a reason.
I don't know for sure, but I doubt that there is a "truck" version of the OEM plug available.
I suggest you go with the NGK plugs.
Fire Cracker Red