Spark plug cross reference chart

[tomdcoker]

Does anyone have a link to one of the above. I have searched google for the last 20 minutes and can not find anything that I can use. Thanks Tom

 

[Guido Salvage]

Any particular plug you are trying to reference?

 

[logging22]

sparkplug-crossreference.com





Manufacturer:

NGK P/N"NGK STK"Accel"AC Delco"Autolite"Beck Arnley"Blue Crown"Bosch P/N"Bosch STK"Champion P/N"Champion STK"Denso P/N"Denso STK"Denso Iridium P"Denso Iridium S"GM OEM NR"Lodge"Mighty"Mopar"Motorcraft P/N"Motorcraft STK"Napa"Prestolite"Splitfire"Stitt"Valley Forge"NGK TYPE"Thread size"Hex size"Reach"Seat type"Projected tip"

Number:


Spark plug cross reference chart
Sparkplug-crossreference.com is a web service that lets you find replacement spark plugs for your car, motorcycle, marine vehicle and lawnmover. Converts between NGK, Autolite, Champion, Denso, Bosch and Accel spark plugs!

Select the manufacturer of your current spark plug, then enter the number of the plug below.
For ngk, bosch, champion, motorcraft and densospark plugs there are 2 numbers, P/N and STK, try your number on both.

The converter can also be used to convert regular spark plug to iridium spark plug.

Browse spark plugs:
denso-iridium
denso
lodge
mighty
mopar
motorcraft
prestolite
splitfire
accel
ngk
Stitt
ac_delco
beck_arnley
blue_crown
bosch
champion
napa
autolite








How to read a spark plug:
Normal condition
An engine's condition can be judged by the spark plugs firing end's appearance. If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally..
Overheating
When having been overheated, the insulator tip on the spark plug is glazed or glossy, and deposits which have accumulated on the insulator tip have melted. Sometimes these deposits have blistered on the insulator's tip.



Deposits
The accumulation of deposits on the firing end is influenced by oil leakage, fuel quality and the engine's operating period.
Deposits come from:
Fuel: C(carbon), Pb(lead), Br(bromine)
Lubricating oil: C, CA(calcium), S(sulphur), Ba(barium), Zn(zinc)
others: Fe(iron), Si(silicon), Al(Aluminum)
Breakage
Breakage is usually caused by thermal expansion and thermal shock due to sudden heating or cooling of the spark plug.




Dry/wet fouling
Although there are many different cases, if the insulation resistance between the center electrode and the shell is over 10M , the engine can be started normally in all cases. If the insulation resistance drops to 0, the firing end is fouled by either wet or dry carbon.




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here ya go.

 

[tomdcoker]

Any particular plug you are trying to reference?

I have several saws that I need to be sure they have the right plug. Thanks Tom

 

[crane]

Try this one, we use it at work: http://www.sparkplugs.com/


Drew

 

[tomdcoker]

Try this one, we use it at work: http://www.sparkplugs.com/


Drew

Thanks for all the help. I think I can go from here. Tom

 

[Guido Salvage]

If these are older saws, I think I have a Champion book from around 1975/76 and can look them up for you.

 

[tomdcoker]

If these are older saws, I think I have a Champion book from around 1975/76 and can look them up for you.

I appreciate that, but I have a repair manual and service manuals that list what each saw needs. I just needed a way to cross refference it in case the orginal plug was no longer available. Thanks Tom

 

[heimannm]

Mike Acres site also has a very nice spark plug interchange chart comparing Champion, Autolite (new and old), Bosch (new and old), Lodge, ND, NKG, and AC.

Mark

http://www.acresinternet.com/cscc.n...e39d1995d7ddc91588256e0c00029d0f?OpenDocument