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Reproduction hood tachometer vent line set for 1967-72 Pontiac models including 1967-69 Firebird and Trans Am. In 1968 Pontiac had a problem with their hood tachometer fogging up, so in 1970 they came out with this special vent line set. GM's fix was connecting a vacuum hose from the bottom of the hood tach to the heater box on the firewall. All 1970-72 Pontiac hood tachs had this set installed by the factory to correct this problem.
Buick Applications| Make | Model | Years |
| Buick | GS 455 | 1970 - 1972 |
| Buick | GS | 1970 - 1972 |
| Buick | Skylark | 1970 - 1972 |
| Pontiac | Firebird | 1967 - 1972 |
| Pontiac | GTO | 1967 - 1972 |
| Pontiac | Laurentian | 1972 |
| Pontiac | LeMans | 1967 - 1971 |
| Pontiac | Tempest | 1967 - 1970 |