1978 EGR Valve Assembly Manual Transmission with California Emissions
The EGR valve controls a passageway between the intake and exhaust manifolds. When the valve opens, the intake vacuum draws exhaust through the valve. This dilutes the incoming air/fuel mixture and has a quenching effect on combustion temperatures. Remember to always replace your faulty EGR valve with the model that corresponds to your year/models engine.
Direct replacement for GM part numbers:
17113411 17065080 17061785
For 5.7L 350 ci V8 With California Emissions
Also known under these part numbers: (For reference only)