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#4447478 - 07/02/17 02:16 PM Bosch Iridium plugs
Tdbo Offline


Registered: 08/18/09
Posts: 3227
Loc: Ohio
The Accord in my signature is getting to the point where it could benefit from some new plugs. The only place where I can find NGK's at a halfway decent price is Rock Auto. However, I can get the Bosch's locally at a decent price. I have never had Bosch plugs before in my life. Anyone have any experience with them in this application?
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#4447487 - 07/02/17 02:28 PM Re: Bosch Iridium plugs [Re: Tdbo]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
Originally Posted By: Tdbo
The Accord in my signature is getting to the point where it could benefit from some new plugs. The only place where I can find NGK's at a halfway decent price is Rock Auto. However, I can get the Bosch's locally at a decent price. I have never had Bosch plugs before in my life. Anyone have any experience with them in this application?



I don't think you'll notice any difference between NGK, Bosch, Denso, or the other big names. Just get the right gap and heat range and you'll be good to go.
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#4447494 - 07/02/17 02:39 PM Re: Bosch Iridium plugs [Re: Tdbo]
skyactiv Offline


Registered: 03/02/13
Posts: 4405
Loc: The Midwest
Are they iridium plugs or "double iridium" plugs? Bosch makes both and the double iridium plugs are longer lasting.
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#4447500 - 07/02/17 02:44 PM Re: Bosch Iridium plugs [Re: Tdbo]
skyactiv Offline


Registered: 03/02/13
Posts: 4405
Loc: The Midwest
Make sure you get the correct heat range. The Accord with a 2.4L engine and California emissions uses a hotter plug, #96305, the non Cal model use plug #9619.
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#4447503 - 07/02/17 02:47 PM Re: Bosch Iridium plugs [Re: Tdbo]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6177
Loc: USA
Denso is good too, if that helps smile

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#4447504 - 07/02/17 02:47 PM Re: Bosch Iridium plugs [Re: skyactiv]
Tdbo Offline


Registered: 08/18/09
Posts: 3227
Loc: Ohio
Originally Posted By: skyactiv
Are they iridium plugs or "double iridium" plugs? Bosch makes both and the double iridium plugs are longer lasting.


All I can get locally is the iridium.
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#4447513 - 07/02/17 02:59 PM Re: Bosch Iridium plugs [Re: Tdbo]
E150GT Offline


Registered: 03/11/12
Posts: 1109
Loc: San Antonio, TX
Based on my experience, iridium plugs last a long time. I changed them out on my 2010 Mazda 3 at 90k and they could have been used much longer. I never noticed any difference.
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#4447519 - 07/02/17 03:12 PM Re: Bosch Iridium plugs [Re: Tdbo]
3800Series Offline


Registered: 08/02/14
Posts: 1452
Loc: Gulf Coast, MS
I got some cheap NGK plugs a last year off Amazon. I was wondering why they where so cheap and looked around online and found that a few Chinese companies make knock off NGK plugs.

From what I read on a handful of sites and on the NGK site I'm certain mine are real but I would keep that in mind if you find some super cheap plugs.

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#4447531 - 07/02/17 03:30 PM Re: Bosch Iridium plugs [Re: Tdbo]
Linctex Online   content


Registered: 12/31/16
Posts: 6170
Loc: Waco, TX
I hate all Bosch plugs except for the ones in my Stihl chainsaws. Those I trust, but others I am not impressed with.

NGK or Nippondenso is the only Iridium ones I will fork over my $$$$ for
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#4447569 - 07/02/17 04:15 PM Re: Bosch Iridium plugs [Re: Tdbo]
Brybo86 Offline


Registered: 10/08/11
Posts: 2950
Loc: Chicago, IL
Try Amazon or eBay, search using the 4 digit NGK part number 5787 not just the longer number ILZKRB11S


Edited by Brybo86 (07/02/17 04:16 PM)
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#4447580 - 07/02/17 04:27 PM Re: Bosch Iridium plugs [Re: Tdbo]
fdcg27 Online   content


Registered: 09/25/09
Posts: 15719
Loc: OH
There are various online suppliers who specialize in plugs and offer good pricing.
I bought a set of Denso double plats and wires a few years back from sparkplugs.com and they offered very good pricing, better than RA.
If it were me, I'd use either NGKs or Densos over Bosch.
Bear in mind that you also have the option of using old school plugs with the correct reach and heat range.
The only downside is that you'll need to change them more often.
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#4447602 - 07/02/17 04:39 PM Re: Bosch Iridium plugs [Re: Tdbo]
CT8 Offline


Registered: 10/09/14
Posts: 11009
Loc: Idaho
I would replace the plugs with the exact same and price wouldn't be a issue.
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#4447695 - 07/02/17 06:45 PM Re: Bosch Iridium plugs [Re: Linctex]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
Originally Posted By: Linctex
I hate all Bosch plugs except for the ones in my Stihl chainsaws. Those I trust, but others I am not impressed with.

NGK or Nippondenso is the only Iridium ones I will fork over my $$$$ for


I agree.

I used to say use Bosch in my VAG vehicles and NGK in my Japanese but I start having trouble with Bosch so switched to NGK in my VW's and AUDI's.
Other car owners from my European forums were making the same conclusions.

As for Iridium...I did have an experience where the center "wire" electrode had burned down to the insulator tip on 3 of the 4 Iridium plugs when I removed them one year after installation. I personally prefer the less expensive old school design and I change them more frequently...but then I like to turn a wrench on my vehicles and keep an eye on what is happening.

Out of curiousity, do any of you check the plug gap on the old plugs you are removing? Do you often find the gap has increased?


Edited by ArcticDriver (07/02/17 06:47 PM)
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#4447738 - 07/02/17 07:29 PM Re: Bosch Iridium plugs [Re: Tdbo]
blupupher Offline


Registered: 08/27/04
Posts: 4426
Loc: Katy, Republic of Texas
For Asian vehicles, NGK or Denso is all I would use.

I have used Bosch Fine Wire in GM vehicles with good results.
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#4447749 - 07/02/17 07:36 PM Re: Bosch Iridium plugs [Re: blupupher]
BrocLuno Offline


Registered: 09/06/15
Posts: 5526
Loc: Kalifornia Kollective
Originally Posted By: blupupher


I have used Bosch Fine Wire in GM vehicles with good results.


+1 smile
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