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Unread 04-21-2018, 08:33 AM   #1
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Location: Toronto, ON
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Default NGK vs. DENSO Spark Plugs

What are the best choice for 4.0 1GR-FE 4th Gen. 4Runner?
I found several options from NGK and DENSO:

- Platinum
DENSO Platinum TT 0.040" (#: PKH20TT) $12.88
NGK G-Power 0.040" (#: LFR6CGP) $8.06

- Iridium
DENSO Iridium TT 0.040" (#: IKH20TT) $18.87
NGK Iridium IX 0.044" (#: LFR6AIX-11) $9.26
'05 4Runner V6 Limited --- Custom 5" LT; 35"; ARB, CBI; Snorkel; etc...
'16 4Runner Limited --- Daily Driver; 3"; 33", Snorkel
'74 FJ40 --- 5"; 35", Snorkel, etc...
'09 Custom Expedition Trailer --- 35"

Last edited by AlexJet; 04-21-2018 at 03:27 PM.
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Unread 04-23-2018, 06:59 AM   #2
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Location: Walnut Creek, CA
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I don't believe there are a difference between the brands, as I recall reports that both can be found as OEM. Not 100% sure though. The DENSOs are definitely OEM, but not sure on the NGKs.

I would go for the Iridium plugs though as they last 100K or so.

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Unread 04-29-2018, 12:27 PM   #3
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I went with the NGK Iridums when I did mine in 2011 on my 08 @ 36k. I've since put about 70-80k on them without issues. Granted I haven't taken them out to look at them now.

NGK Iridium IX PN: LFR6AIX-11 Stk #: 6619 Gap .044 (.045 actual)
2008 SR5 4x4 V6 Salsa Red Pearl w/Taupe Interior
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Audio: Eclipse HU CD8445, Polk Audio db6501 6.5" Components, Polk Audio db351 3.5" in factory tweeter location, 2 Sundown SA12's @ 1200W RMS
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