Extensions, 1967-72 Chevelle/El Camino/Monte Carlo, Smog Tube, 8pc

Genuine steel tubing

A must-have when installing smog tubes

These steel extensions are manufactured to factory specifications for use with small-block or big-block smog tubes. Extension tubes are used at each exhaust port to pump air into the chamber and improve combustion. Each engines require one tube per cylinder. Available individually, or in a complete set.