Re: Spark plug cross reference
[Re: topside]
#3107302
01/01/23 06:30 PM
01/01/23 06:30 PM
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Joined: May 2004
Posts: 5,123 Warrenton, VA
RoadRunnerJD
OP
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OP
master
Joined: May 2004
Posts: 5,123
Warrenton, VA
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Looks like they're no longer using the traditional #s. Autozone.com shows the following (all in copper, though platinum & etc are available) : Champion 404 & 415 Autolite 65 NGK 6578 Thanks for the info but I wonder what plugs are the guys with 340’s actually using?
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Re: Spark plug cross reference
[Re: RoadRunnerJD]
#3107406
01/02/23 02:34 AM
01/02/23 02:34 AM
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Joined: Dec 2005
Posts: 11,706 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,706
Fulton County, PA
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The old numbers are not used in the auto parts now. Except for Autolite and AC. NGK and Champions have part numbers that the counter guy needs to cross to so he can find the plug on the shelf. The minimum wage part timers may not know how to get your RN12YCs that are actually 404s. And the software is based on year, make and model. Asking for a BPR6ES without that information may get the "duh-duh" look.
Some of the old plugs, 55-51 Autolites and some on the non resistor numbers are no more. Race plugs are usually what you need for copper non-resistors..
Factory catalogs or websites will be helpful with numbers and what is still available. Have the part numbers when you go to the store.
Last edited by CMcAllister; 01/02/23 02:43 AM.
If the results don't match the theory, change the theory.
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Re: Spark plug cross reference
[Re: lewtot184]
#3107438
01/02/23 09:40 AM
01/02/23 09:40 AM
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Joined: Jan 2003
Posts: 10,759 North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,759
North Dakota
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Great. First oil, then tranny fluid, then gear oil, now spark plugs.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Spark plug cross reference
[Re: solarguy]
#3107718
01/02/23 03:13 PM
01/02/23 03:13 PM
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Joined: Dec 2005
Posts: 11,706 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,706
Fulton County, PA
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Thanks for the info but I wonder what plugs are the guys with 340’s actually using?
Autolite 63 on my 340 runs great [/quote] 65 is the OE replacement. As the number get smaller, they get colder. We ran 55-51 back in the day. Same plug, nonresistor. Many of these numbers are NA. 63, 64 and 65 are still good.
If the results don't match the theory, change the theory.
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Re: Spark plug cross reference
[Re: CMcAllister]
#3107733
01/02/23 04:18 PM
01/02/23 04:18 PM
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Joined: May 2019
Posts: 6,324 nowhere
Sniper
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65 is the OE replacement. As the number get smaller, they get colder. We ran 55-51 back in the day. Same plug, nonresistor. Many of these numbers are NA. 63, 64 and 65 are still good.
51 is now 315 53 is now 300 54 is now 302 55 is now 38 You can punch the old numbers in the link below and it will tell you the new number https://www.championautoparts.com/find-my-part.html
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