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Old 02-24-2013, 09:03 PM   #1 (permalink)
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Default Spark plugs, spark plugs, spark plugs....

I don't want to start a thread on "how to", this is about spark plug selection.
I have spent the last two days looking for the correct plug to use and everywhere I go, there are different suggestions. I have an 06 ob xt and the manual states, the "recomended plug" is the NGK ILFR6B. When I search for that plug at different vendors, it comes back not compatible. On the LGT and NASIOC forums they suggest different plugs. I am looking for the stock replacement, not one step colder. Before I order the wrong plugs I am looking for some info. Are the NGK silfr6a the correct plugs? Whe does the manual suggest different? Will the correct plugs come with the proper gap?
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Old 02-24-2013, 09:59 PM   #2 (permalink)
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try NGK SILFR6B
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Old 02-24-2013, 10:53 PM   #3 (permalink)
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It boils down to and NGK iridium with a heat range 6. NGK 6481 at your local parts store. Denso equivalent is SK20HR11 or 3421. Either one the plug to use.
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Old 02-24-2013, 11:28 PM   #4 (permalink)
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is -11 the right gap for an xt ?
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Old 02-25-2013, 06:43 AM   #5 (permalink)
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Quote:
Originally Posted by 1 Lucky Texan View Post
is -11 the right gap for an xt ?
11 is not the gap.

NGK Spark Plugs USA Technical

NGK Spark Plugs USA FAQS

On this last link, click on the Spark Plug Guide for a part number break down.

Look around the site. It might have something on it you didn't know before.
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Old 02-25-2013, 07:58 AM   #6 (permalink)
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Hold on there partner. Modern plugs come pre-gapped. Many folks think it can't hurt to double check with a gauge. The problem is that using a gauge to gap the plugs can scrape of the coating, like iridium, from the contacts, degrading the plug's performance at running temps.

I've always used NGK for my Japanese cars. IMHO stay away from Bosch.
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Old 02-25-2013, 08:41 AM   #7 (permalink)
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according to the globaldenso site, that Denso plug is pre-gapped at 0.044 (1.1mm, thus -11)


DENSO SPARK PLUGS



the NGK NGK SILFR6B is pre-gapped at .032 I think (0.8mm)

also, the NGK 6481 is not listed for his car(though, it may work fine - I dunno) at the NGK parts finder. The Iridiums which are listed, both show a gap of 0.30"; http://ngksparkplugs.com/part_finder...uv/results.asp
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Old 02-25-2013, 08:49 AM   #8 (permalink)
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Quote:
Originally Posted by DavidPeab View Post
Hold on there partner. Modern plugs come pre-gapped. Many folks think it can't hurt to double check with a gauge. The problem is that using a gauge to gap the plugs can scrape of the coating, like iridium, from the contacts, degrading the plug's performance at running temps.

I've always used NGK for my Japanese cars. IMHO stay away from Bosch.
co-worker just had a bad experience with Bosch in his daughter's Camry, I told him to get NGK and now it's running fine.

I think I'd avoid Bosch, too many anecdotal failures to risk it.
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Old 02-25-2013, 09:47 AM   #9 (permalink)
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Quote:
Originally Posted by flat4underpressure View Post
I don't want to start a thread on "how to", this is about spark plug selection.
I have spent the last two days looking for the correct plug to use and everywhere I go, there are different suggestions. I have an 06 ob xt and the manual states, the "recomended plug" is the NGK ILFR6B. When I search for that plug at different vendors, it comes back not compatible. On the LGT and NASIOC forums they suggest different plugs. I am looking for the stock car accessories replacement, not one step colder. Before I order the wrong plugs I am looking for some info. Are the NGK silfr6a the correct plugs? Whe does the manual suggest different? Will the correct plugs come with the proper gap?
I am not completely sure but you need to try eBay site to get right plug..
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Old 02-25-2013, 10:12 AM   #10 (permalink)
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See, with just these few posts, confusion. SILRF6B is not the same as SILRF6A? FCP import and another site recommend SILRF6A. I want the OEM plugs. Car did not come with denso or Bosch but NGK (Japanese). I am just wondering on why the different NGK numbers especially from what the maintenance Manuel recommends?
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