#1
·
Aug 22, 2014
The NGKSparkplugs.com web site says DILFR5C11. The '07 Maintenance Manual says DIFR5A-11. I think the maintenance manual is slightly off since I can't find that plug. Instead, I think it should be DILFR5A-11, which I can find.
What is the difference between the "A" and "C" plugs?
#2
·
Aug 22, 2014
This may help you:
http://www.titantalk.com/forums/3152065-post5.html
K well i figured the VQ35 used the same plugs so this is true. I found this list.
List of spark plugs available in multiple heat ranges for the VQ35:
Brand-------------------Stock #-----------Heat Range
NGK Iridium
LFR5AIX-11---------- 4469------------- Stock heat range
LFR6AIX-11---------- 6619-------------1 step colder
LFR7AIX--------------2309-------------2 steps colder
NGK V-power (standard plug)
LFR5A-11------------- 6376-------------Stock heat range
LFR6A-11------------- 3672-------------1 step colder
Denso Iridium
IKH16------------------------------------Stock heat range
IKH20------------------------------------1 step colder
IKH22------------------5345-------------2 steps colder
IKH24------------------5346-------------3 steps colder
IKH27------------------------------------4 steps colder
The NGK in red is what i'm and others are using.
#7
·
Aug 23, 2014
I used the NGK-R PLFR5A. That is was actually came in my 05 stock.
#9
·
Aug 23, 2014
the plugs differ if your truck is flex fuel or not I can't remember which ones I used but they were for flex mines a 07
#10
·
Aug 24, 2014
Spark plugs for the flex fuel Titan have a "D" in the part number.
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