Iridium NGKs vs. Multi Ground

[bass-o-matic]

Hello.

I just bought a 2002 with 74K on it. Took it to the dealer for a check up and they said I needed plugs. I definitely plan on doing it myself. I have the NGK TE66 Wires I'm going to put in just for fun.

Question 1: I see some people using the NGK Iridium and others swearing by the Multi Ground.

Soooo... are they both going to work or will the Iridium cause problems?

Multi Ground BKR5EKB-11
Iridium BKR5EIX-11

Question2

If the Iridiums are OK then I noticed that the NGK site sez to gap them to .44 and my manual sez to gap to .43. I guess that's just for the standard plugs?

Thanks for any help.

 

[Elton H]

i use good old dual ground plugs denso from the dealer like 12 dollars

 

[nrgwar]

I would stay with OEM I went with Iridium NGKs & I had nothing but CEL probs & misfiring all & all its best to go with OEM plugs & wires :bluejump:

 

[bass-o-matic]

Cool. Yea. I think that's what I'm reading on the interweb.

How often should one do wires?

 

[Elton H]

wires should last a long ime i changed the oem ones at 130k cuase i was doing a tune up truck still ran great but i changed them anyways

 

[RevengEngine]

go with OEM. reliable and cheap from the dealer... surprising no?

 

[TheDurk]

I put the NGK TE66 wires in at 90K. Now at 120K and all good. I like the blue color. I get my NGK dual ground plugs at NAPA (only a mile away--get all my filters there, too.)

 

[Elton H]

good choice way better than fram or bosch crap

 

[01t4rnr]

I just changed my plugs out 2 weeks ago at 103,ooo miles , had NGk's on one side and Denso's on the other for some reason, both dual electrode. I put in Denso singles and runs great, cant tell any difference before and after at all for those wondering.

 

[02SE]

I've been running the NGK BKR5EIX-11 plugs and TE66 wires in my '97 4Runner for about five years now. It still runs like new.

 

[TheDurk]

I just changed my plugs out 2 weeks ago at 103,ooo miles , had NGk's on one side and Denso's on the other for some reason, both dual electrode. I put in Denso singles and runs great, cant tell any difference before and after at all for those wondering.

That's the way they came from the factory. For whatever reasons, Toyota split suppliers of plugs and put one brand in one side and one in the other. So either you had the original plugs, or someone was seriously anal-retentive when they replaced them. Either the Denso's or the NGK's are fine--dealers will sell you all of one or the other.

 

[bass-o-matic]

Thanks! Did the plugs yesterday with the Toyota Densos. All went well. Purrs like a kitten. Drove it around all evening with the wife running errands.

One point. I'm glad I had the NGK Wire Set already in hand. The factory wires where they attach to the Coil Packs were brittle. At least one was brittle enough to fall apart when I took it off... and I was gentle as charmin.

I know it's unlikely that after 74K the plastic would fail but there you have it. All the plugs I pulled looked worn but good. Maybe it's the Texas heat?

So I do have the NGK wires on there... seem just fine.

Cheers

 

[01t4rnr]

what do you guys think about the single electrode vs. dual? I know it says under the hood to NOT run singles but i dont see the reasoning behind it except the duals may last longer? I just checked and i put the Denso platinum TT singles in and it runs fine, again no real difference before and after

** just noticed the TT stands for "twin tip" so maybe its actually considered a dual electrode?

 

[Darkbloodmon]

Denso Iridium TT?

Anyone running Denso Iridium TT p/n : 4701, 252K on my little sisters 4Runner I'm working on, and hitting a lot of forgotten maintenance items from the previous owner, this lil truck has a drinking problem.

 

[spartacus]

Anyone running Denso Iridium TT p/n : 4701, 252K on my little sisters 4Runner I'm working on, and hitting a lot of forgotten maintenance items from the previous owner, this lil truck has a drinking problem.

Use the denso dual electrode plugs toyota recommends. NGK plug is #BKR5EKB-11. Denso plug is #K16TR11. you are not going to see any power or gas uptick by using the denso iridium tt:4701 in the 3.4l motor. Clean the maf, throttle body, replace pcv valve. etc if your o2 sensors are not performing optImally they effect the mpgs. lots of threads on here for mpg issues Google it.

 

[gamefreakgc]

Anyone running Denso Iridium TT p/n : 4701, 252K on my little sisters 4Runner I'm working on, and hitting a lot of forgotten maintenance items from the previous owner, this lil truck has a drinking problem.

My iridiums last around 25K miles, that's it. It's because we have a waste spark system that fires twice as often (once on the combustion cycle and once on the exhaust cycle) it wears down the ground strap prematurely. By having a dual ground spark plug like the nice huge sticker on the timing belt cover says, it makes the plugs last twice as long. Stick with the stock copper core plugs, either NGK or DENSO, both are OEM. 4Runners came with 3 of each installed.

 

[ArmArak]

IMO go with the OEM dual ground Denso plugs. They just work great and are very reliable. Seems like most others agree too haha.

 

[Yarney77]

Many years later, it's 2026 and I found Denso OEM plugs at the local dealership for $4.64 each (on sale for $3.54) and an additional 5% off! Picking up 6 new plugs today for $22. Some parts are actually cheaper at the dealership!:crazy:

 

[yyyames]

go with OEM. reliable and cheap from the dealer... surprising no?

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