Spark Plug Fitment Guide

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Using several auto part sites, I've compiled a list of spark plug part numbers. If you don't see one on this list that you think should be here, please PM me and let me know.

The most commonly recommended spark plugs (by forum members) are in bold and the most commonly not recommended spark plugs are in red.

However, it seems that spark plugs are quite a bit about how you prefer your truck to run, so pick ones that work the best for you.


1994-1997 Dodge Ram V8 Engines
-AC Delco Rapidfire: 5
-AC Delco Platinum: 41-800
-AC Delco Copper: 41-629
-Autolite Iridium: XP3924
-Autolite Double Platinum: APP3924
-Autolite Platinum: AP3924
-Autolite Copper: 3924
-Autolite Copper: 3923 (colder, reduces engine detonation or "ping")
-Bosch Iridium: 4501
-Bosch Platinum +4: 4418
-Bosch Platinum +2: 4301
-Bosch Platinum Plus: 4002
-Bosch Super Plus Copper: 7927
-Champion Iridium: 9201
-Champion Double Platinum: 7071
-Champion Platinum: 3071
-Champion Copper Plus: 71
-Denso Iridium: 3395
-Denso Double Platinum: 3264
-Denso Platinum: 4503
-Denso Copper: 3130
-E3: E3.48
-Motorcraft Platinum: SP497
-Motorcraft Copper: SP406
-NGK Platinum: 2685
-NGK V-power Copper: 5155
-Pulstar: BE-1


1998-2001 Dodge Ram V8 Engines
-AC Delco Rapidfire: 5
-AC Delco Platinum: 41-806
-AC Delco Copper: 41-602
-Autolite Iridium: XP5224
-Autolite Double Platinum: APP5224
-Autolite Platinum: AP5224
-Autolite Copper: 5224
-Autolite Copper: 3923 (colder, reduces engine detonation or "ping")
-Bosch Iridium: 4508
-Bosch Platinum +4: 4428
-Bosch Platinum +2: 4308
-Bosch Platinum Plus: 4030
-Bosch Super Plus Copper: 7962
-Champion Iridium: 9203
-Champion Double Platinum: 7436
-Champion Platinum: 3436
-Champion Copper Plus: 436
-Denso Iridium: 3395
-Denso Double Platinum: 3264
-Denso Platinum: 4503
-Denso Copper: 3130
-E3: E3.48
-Motorcraft Platinum:
-Motorcraft Copper: SP445
-NGK Laser Platinum: 3271
-NGK Iridium: 6441
-NGK Platinum: 7100
-NGK V-power Copper: 4291
-Pulstar: BE-1


Thanks to JasonW at DF for this list.