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Product details
This NGK Iridium IX plug is a non-projected, heat-range 7 resistor design. It is the specified iridium option for the selected early 911 T and non-Carrera 2.7-liter engines below; it is not a universal upgrade for every air-cooled Porsche.
Technical Details
- NGK type: BR7EIX; stock number: 6664
- Plug family: Iridium IX; NGK heat range: 7
- Thread: M14 × 1.25; threaded reach: 19 mm; wrench size: 20.8 mm
- Non-projected firing end; resistor
- Sold individually: order quantity 1 supplies one spark plug, not a box or engine set.
Fitment & Compatibility
Match the exact engine version. The table identifies the specific classic applications supported by NGK’s catalog.
PMB Performance has over 20 years of Porsche parts experience. Send us your model year, engine details and any ignition or cylinder-head changes for help confirming the correct plug.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1968–1969 | Porsche | 911 | T 2.0 | Heat range 7, non-projected iridium option. |
| 1970–1971 | Porsche | 911 | T 2.2 | Not E or S. |
| 1972–1973 | Porsche | 911 | T 2.4 | Match engine specification. |
| 1974–1975 | Porsche | 911 | 2.7 non-Carrera | Includes the listed low-compression K-Jetronic engine; not Carrera/RS. |
