whats the difference between a.i.r. header and a non a.i.r. header?

smylesM04 · Apr 20, 2009

i wanna get ceramic coated headers for my 00 gmc sierra 5.3l. there is two types offered by edelbrock one has a.i.r. and the other doesn't. how can i tell what i have so i can order the correct ones. i know for a fact that my truck was made in Canada and it has EVAP emissions.

non air
http://www.jegs.com/i/Edelbrock/350/65002/10002/-1

air
http://www.jegs.com/i/Edelbrock/350/65012/10002/-1

KirkW · Apr 20, 2009

A.I.R. stands for Air Injection Reaction - basically, and air-pump. The A.I.R. headers have fittings on the #2 and #3 cylinders for the air pump to inject outside air into the exhaust stream to help decompose the pollutants.

If you don't have an AIR pump and metal tubes leading into your existing exhaust manifolds, then you don't need the A.I.R. headers.

whats the difference between a.i.r. header and a non a.i.r. header?

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