Denso or NGK Spark Plugs

Forum for Infiniti M37, M56 M35h Hybrid and Q70 owners.
bcmtouring
Posts: 10
Joined: Thu Dec 24, 2015 1:45 pm
Car: 2012 M37X AWD
Location: Airdrie, AB

Denso or NGK Spark Plugs

Postby bcmtouring » Fri Mar 11, 2016 11:19 am

I am debating whether to get the DENSO Iridium Long Life Spark Plugs or NGK Laser iridium spark plugs for my 12 M37X. The price difference is about $80. Please advise.


silberma
Posts: 54
Joined: Thu Apr 02, 2015 6:19 am
Car: 2015 70QL

Re: Denso or NGK Spark Plugs

Postby silberma » Sun Mar 13, 2016 8:32 am

You are trying to hard. Any Iridium spark plug will do.

User avatar
Ilya
Moderator
Posts: 9376
Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Tampa, FL
Contact:

Re: Denso or NGK Spark Plugs

Postby Ilya » Mon Mar 14, 2016 9:49 am

NGK ONLY on anything that Nissan makes. Never anything else. I'm not kidding. Many horror stories of people using Bosch, etc.

Larz
Moderator
Posts: 2996
Joined: Thu Feb 21, 2013 8:55 pm
Car: 2009 M35 RWD
Location: Ft Lauderdale, Florida
Contact:

Re: Denso or NGK Spark Plugs

Postby Larz » Mon Mar 14, 2016 6:54 pm

I agree. Too many stories of non-NGK plugs having to be removed and replaced with NGKs. Belive me, you do not want to pay for this service or waste all those hours doing this yourself twice.

rsilva800
Posts: 99
Joined: Sun Aug 06, 2006 9:13 am
Car: 94 Z32, 11 M37S , 01 Pathfinder
Location: TX

Re: Denso or NGK Spark Plugs

Postby rsilva800 » Wed Mar 16, 2016 8:57 am

OEM for our engines is Denso, so that is what I have been using, so far no problems at all.

I have experience with NGK's as well, on my Z (they are OEM for that engine), and have not had any problems either. If you are not doing any tuning or high performance build OEM plugs will be fine, I would jump up to Iridiums though :biggrin:

User avatar
Ilya
Moderator
Posts: 9376
Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Tampa, FL
Contact:

Re: Denso or NGK Spark Plugs

Postby Ilya » Wed Mar 16, 2016 11:14 am

I have never seen a Nissan/Infiniti use anything BUT NGK...for decades. Maybe the brand new cars are different, but I have Nissan knowledge going back to the model year 1997 (my first Maxima) and I've had 3 cars (99 Maxima, 07 M35x and now my 11 M56x) and all of them are NGK.

EDIT: I did some digging and turns out the M37/Q70 3.7 uses Denso while the M56/Q70 5.6 uses NGK. Color me edumacated. Did not hear or know that Nissan started using anything other that NGK.

Here is a screen shot. Page 3/4 of the FWD section of the 2011 Infiniti M Factory Service Manual.

Image

agoodall
Posts: 102
Joined: Thu Apr 10, 2014 8:37 am
Car: 2011 M37x
Location: West Chester, PA

Re: Denso or NGK Spark Plugs

Postby agoodall » Mon Mar 21, 2016 8:40 am

I just had my 90k service done, and spark plugs. Shop used Denso Iridium

User avatar
Ilya
Moderator
Posts: 9376
Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Tampa, FL
Contact:

Re: Denso or NGK Spark Plugs

Postby Ilya » Mon Mar 21, 2016 8:56 am

I wonder why they make the V8 M go NGK and the V6 Denso and why they can't be interchangeable.

ssmrico
Posts: 400
Joined: Mon Mar 13, 2017 6:10 am
Car: 2000 Infiniti i30

2011 Infiniti M37S

Re: Denso or NGK Spark Plugs

Postby ssmrico » Mon Apr 03, 2017 5:58 am

which ngk part number for the plugs for m37?

Malbec 56 Beast
Posts: 613
Joined: Wed Feb 15, 2017 7:32 pm
Car: 2013 Infiniti M66xS Totaled 4/11/20
What's next???
2010 Subaru Legacy
1983 Porsche 928 S Euro (Sold) 2/17/20

Re: Denso or NGK Spark Plugs

Postby Malbec 56 Beast » Sun Apr 09, 2017 1:40 pm

I need to do this also.

I'll be useing the NGK DILKAR7B11 (1406), Rockauto has the cheapest price $15.21ea $128.67 (8) to my house. Cheaper than EBay or Amazon.

Andy

ssmrico
Posts: 400
Joined: Mon Mar 13, 2017 6:10 am
Car: 2000 Infiniti i30

2011 Infiniti M37S

Re: Denso or NGK Spark Plugs

Postby ssmrico » Mon Apr 24, 2017 7:11 am

for m 37? ^

ssmrico
Posts: 400
Joined: Mon Mar 13, 2017 6:10 am
Car: 2000 Infiniti i30

2011 Infiniti M37S

Re: Denso or NGK Spark Plugs

Postby ssmrico » Mon Apr 24, 2017 7:18 am



Return to “Infiniti M37, M56 and Q70 Forum”