Can use on pre 1980 cars with out smog pump.
Single Belt Pulley ( Half Moon )
3 1/4 Inch Diameter
| Make | Model | Engine Type | Liter | Years | Fuel | CC |
| Porsche | 911 | H6 | 2.7 | 1975 - 1977 | GAS | 2688 |
| Porsche | 911 Carrera | H6 | 3.2 | 1984 - 1989 | GAS | 3163 |
| Porsche | 911 SC | H6 | 3.0 | 1978 - 1983 | GAS | 2999 |
| Porsche | 911 Turbo | H6 | 3.0 | 1976 - 1977 | GAS | 0 |
| Porsche | 911 Turbo | H6 | 3.3 | 1978 - 1989 | GAS | 0 |
| Porsche | 914 6 | H6 | 2.0 | 1970 - 1971 | GAS | 1991 |
| Porsche | 914 6 | H6 | 2.0 | 1972 | GAS | 1921 |
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