1968-81 Pontiac V8 Engine Air Cleaner Heat Riser tube With Elbow 1pc This is the heat riser tube, it goes from the air cleaner base to the exhaust manifold pre-heater shroud. One of these are used on all pontiac engines and the RAM AIR 4 uses 2 of these. These are used on all Pontiac V8's and are a must for a concours restoration. This is an exact inline tube reproduction made identical to the original. These are the details that separate the first place cars from the rest. .
