can someone give me the part # for the ngk for our truck , i have evreything ,msd cept for the box, and i have autolights so im going to have to change them soon ,

 

http://www.napaonline.com/MasterPage...Plug+-+V+Power

 

a cut from the "Magnum Engine Sparkplugs FAQ"
if a url is now dead
search for a cached version of it in the Wayback Machine of the Google Archive
=======

Champion RC12YC is the 1993-1998 factory installed plug. (resistor inside
measures 75,000 ohms)

Champion RC11YC is one heat range cooler and is part number 3344.

Champion RC9YC is an even colder heat range available.

The Champion RC9YC4 sparkplug has been reported by Ram owners as being helpful
in reducing pinging.

Champion RC12LC4 is a longer projected nose plug installed at the factory on
V8 Rams since approximately 1998. The plug change was probably for emissions
purposes.

Champion RC12LYC is a longer 'projected nose' plug previously recommended for
the Viper alum. V10 and Chrysler 3.2/3.5L V6's.

The '95 stock factory sparkplug for the iron block Dodge V10 engine was a
Champion Copper Plus RC9MC4.

The 1995-1999 iron block Ram V10 is a QC9MC4, where the Q instead of the R
means the resistor inside is a "wire wound" instead of the SAC semiconductor
that Champion primarily uses to surpress radio interference.
An email to Champion in 1998 got a reply that the '9' in the above numbers
does mean that these plugs are 3 heat ranges cooler than the '12' heat range
plugs like the RC12YC used in the V8's.

Why the truck V10 uses a 3 heat range cooler sparkplug is not known, but
perhaps since the heavy trucks don't have to meet as stringent pollutions
standards, this is a more ideal sparkplug for performance instead of
emissions.

Champion RC12MCC4 are stock in the 4.7 Magnum V8.

Champion RC10PYP4 is a projected tip, double platinum plug that is standard
equipment in some of the Chrysler 2.5L V6's that have 3 almost impossible to
reach plugs in the rear. Being two heat ranges cooler with double platinum
tips for long life it might be an interesting replacement for the Magnum V8's.

Champion Truck Plugs P/N 4071
Many Ram owners have reported they were pleased with a change to this plug.
The main differences between the Truck Plug 4071 and the stock RC12YC seems to
be that the new center electrode metal rod is longer, and the insulator is
black color instead of white. (Resistor inside 85,000 ohms) It is possible
that the extra 10,000 ohms of resistance retards spark firing a little bit,
and may account for why some report that this plug reduced pinging on their
Ram.

http://www.federalmogul.com/products...u<br /> gs.htm

another better descriptive Champion sparkplug website at:

http://www.edelbrock.com/automotive/sparkplugs.html

If unavailable locally, Champion sparkplugs can be mail ordered from
http://www.edelbrock.com

Kenne Bell company says they did extensive research and testing on their
in-house DynoJet 148C, and recommend the "V" design NGK ZFR5F11 (stock number
2262, resistor inside 4,000 ohms) for non-supercharged,
and ZFR6F11 (one heat range cooler) for blown 5.2/5.9 Dodges.

These V design NGK sparkplugs have a v-notch cut into the center electrode
that increases the sharp edges and moves the spark away from the center. Sharp
edges reduce the voltage need for the spark to start. The nose of these plugs
seem to be slightly more projected than the Champion RC12YC. The ZFR5F11 is
also NGK's recommended Viper Aluminum V-10 plug.

One Ram owner reported on MoparChat that he purchased 12 of the ZFR5F11 plugs
and "indexed" the 8 that 'by chance' stopped in the threaded hole with the
ground electrode post toward the fender side of the truck. This puts the open
gap toward the valves and is done that way in hope that it would aid
combustion speed.

Increased combustion speed is generally a good thing, but if
the engine is already pinging this may increase detonation tendency.

If you put a piece of white tape around your sparkplug socket and make a black
mark on the tape, it is easy to insert the plug so that the ground electrode
post is lined up with the mark. this way you can see where the ground post
ends up.

These ZFR5F11 plugs were reported to noticeably pep up the 5.9 V8 engine
compared to the 30,000 mile old Champion plugs.

See this webpage for an article on indexing with good pictures:
http://www.fordmuscle.com/archives/2...gs/index.shtml

NGK's standard recommended sparkplug for the 3.9/5.2/5.9 Magnum engines is the
FR4 (stock number 5155) or FR5-1, (stock number 7252).

http://www.ngksparkplugs.com/products/cars_trucks_suvs/

NGK platinum plugs (part#ZFR5FGP, stock#7098) have also been reported to work
well in a 2001 5.2V8.

NGK also makes an Iridium plug. If your running the ZFR5F-11 (4593) the
Iridium plug would be the NGK ZFR5FIX-11 (2477). Here is a website that has a
cross reference for plugs.

http://www.clubplug.net/retail_iridium_ngk.html


NGK has a very good set of pictures for reading the ends of used sparkplugs
at:

http://www.ngksparkplugs.com/techinf...q/faqread2.asp

 

i have champion RC12YC plugs in my mower.

 

the also have double platinum and iridium