4.6 Spark Plug replacement at Walser Hyundai

[homeofstone]

iridium plugs in new cars are made to last from 75000 to 100000 miles and could go to 125000 before any need to change out spark plugs.

 

[Sayantsi]

Yes, Iridium plugs easily last 100k mi - I have inspected and changed Iridium plugs on other cars at different intervals, and even at 60k mi/7 years, the plugs still look good.

As far as Hyundai-sourced plugs vs "generic" from a supplier - if you can gap a plug, just get the generic. All the factory plugs are simply generic plugs that had somebody gap them already for the car, thus the price premium.

Also, remember new NGK plugs have an anti-seize coating on them from the factory - if you apply additional coating you run the risk of the plugs backing out. Only apply anti seize on existing plugs if you reinstall them.

 

[Rey]

I changed my plugs. It isn't a big deal. Taking your time. It should not take over two hours.
By all means use anti-seize compound. You don't need much. I don't worry about too much as the thread clearances are so tight that any excess is squeezed out upon torquing the plugs.
I replaced my OEM plugs with Pulstar iridium plugs at $14/ea. I like the Pulstar concept, but it is not for everyone. I had over 30K miles on them with no issues. I did not notice any difference in performance, gas mileage, etc.

 

[rlbatch]

Update on this old thread: "4.6 Spark Plug replacement at Walser Hyundai"

$400 at the Stealer (dealer) is actually probably a little LOW! The invoice for spark plug replacement would probably look something like this: 8 ea. DILFR5E-11 OEM spark plugs $45.00 ea. (list price not yet marked up) = $360.00, One hour shop labor (est.) = $100.00, TOTAL $460.00 plus tax and shop materials (rags and cleaning fluids)
The best price I could find online for the DILFR5C-11 (the aftermarket replacement for the OEM DILFR5E-11) is $16.33 at Sparkplugauto.com (http://tinyurl.com/7lpgvfp) = $130.00 plus shipping, zero for your own labor.

Fortunately this job is a once in 100,000 mile requirement nowadays.

 

[Mark_888]

Here is the part for the plugs on a 4.6 at http://www.hyundaipartsonline.com (a real Hyundai dealer, Lithia Hyundai in Renton Washington). I believe these are the prices of the official OEM part, but a dealer can charge whatever they want.

Spark plug, Spark plug
4.6 liter
List Price : $18.35
Your Price : $15.93