Does anyone know a good replacement spark plug for these engines? I tried ordering the part numbers listed in the user manual from a Chrysler dealer in Florida and got an email that said the spark plugs are no longer available. When I looked up the details on Mopar.com it gave me an entirely different spark plug which I think are for the Hemi, not the 4.7L.

The plugs I tried to order are:
SPFR8TE2AA (intake side)
SPFR8TI332 (exhaust side)

The only plug that came up on Mopar.com is:
SPRE14MCC4

The Aspen is approaching 100K miles and feels really under powered. I would like to find the correct plugs by this weekend so I can rotate the tires and change the plugs while the tires are off.

Any help is greatly appreciated! Thank you all in advance!

 

Have you tried a napa or advance auto? I would try an NGK on both sides

 

X2 for NGK. I don't know about the non-hemi engines, but I was told not to run the plugs with multiple electrodes.

 

Thanks fellas! I ended up ordering the NGK plugs according to their application guide. Just over $100 for those and now I need to spend about another $100 for the wires and coil over plug boots. So it will be another couple weeks before I can start on it, unfortunately.

Is there anything else I should plan I doing while in tearing into everything? I'll probably do the belt at the same time. She has 92K miles on her.

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Be sure to use some dialectric grease when putting them back in

 

Thanks for the reminder! Anti-Seize as well. Been a few years since I've had to work on a gasser. Told my wife we ought to just get her a diesel as well....she's been wanting a 3rd Gen. Told her we need to wait to see how all this Air Force reshaping is going to play out over the next few months first.

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Just a heads up! No Anti-Seize on NGK spark plug threads. NGK advises against using anti seize compounds on their spark plugs.


http://www.ngksparkplugs.com/pdf/TB-...1antisieze.pdf

 

Thanks for the notice Dr.D. I will stand down on the anti-seize then. Man has it been a long time. I've never encountered those problems in the past, however, not time to start now though.

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