| Manufacturer & Part # | Description | Note |
| AUTOLITE Part # 5224 | PLUGS Resistor | GAP .044 |
| AUTOLITE Part # AP5224 | PLUGS Platinum | GAP .044 |
| AUTOLITE Part # APP5224 | PLUGS Double Platinum | GAP .044 |
| CHAMPION Part # 318 | COPPER PLUS (#RC12MC4) | {.044 gap} |
| BOSCH Part # 4301 | PLATINUM+2 | Original equipment is iridium.; Do not gap. Gap is not adjustable. |
| BOSCH Part # 4418 | PLATINUM+4 | Original equipment is iridium.; Do not gap. Gap is not adjustable. |
| BOSCH Part # 4501 | PLATINUM IR FUSION | Original equipment is iridium.; Do not gap. Gap is not adjustable. |
| BOSCH Part # 7556 | SUPER (#FR7DCX) | GAP=0.044"; Original equipment is iridium. |
| DENSO Part # 5304 | Iridium Power (#IK20) | Iridium Power Performance Upgrade With World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir) |
| CHAMPION Part # 3318 | PLATINUM POWER | {.044 gap} |
| CHAMPION Part # 7318 | DOUBLE PLATINUM POWER | {.044 gap} |
| NGK Part # 6994 | Premium Iridium Plug (#IZFR6K11, IZFRK) | {.044 gap} |
| AUTOLITE Part # XP5224 | PLUGS Xtreme Performance | OE Style; Gap .044 |
| CHAMPION Part # 9202 | CHAMPION IRIDIUM | OE Style {.044 gap} |
| DENSO Part # 3377 | Iridium Long Life (#SKJ20DRM11) | O.E. Recommended Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) With Platinum Ground Strap |
| BOSCH Part # 4002 | PLATINUM PLUS (#4202, FR8DPX) | GAP=0.044"; Original equipment is iridium. |
| BOSCH Part # 7956 | SUPER PLUS | GAP=0.044"; Original equipment is iridium. |