Emission controls in older carbureted engines relied on forcing additional air from pumps and valves located just before the exhaust manifold to ensure better burns. This is known as a secondary air injection system, and today has evolved to increase the efficiency of Catalytic Converters. Failed pumps and leaks are common signs of a bad Air Injection System, leading to off air and fuel ratios and poor acceleration. Remember to check the Manifold Gaskets and Seals for wear and tear when examining the exhaust.
Filter By Part Details
- Walker Converter Rear Left To Front Pipe Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $2.25 Regular Price $2.99
- Walker H-Pipe Exhaust System Insulator for 1996-1999 GMC K1500 5.7L V8Special Price $9.87 Regular Price $13.99
- Walker Converter Rear Left To Front Pipe Exhaust Pipe Flange Gasket for 2009-2012 Suzuki Equator 4.0L V6Special Price $2.25 Regular Price $2.99
- Walker Converter Rear Left To Front Pipe Exhaust Pipe Flange Gasket for 2005-2015 Nissan Xterra 4.0L V6Special Price $2.25 Regular Price $2.99
- Walker Converter Rear Left To Front Pipe Exhaust Pipe Flange Gasket for 2005-2012 Nissan Pathfinder 4.0L V6Special Price $2.25 Regular Price $2.99
- Walker H-Pipe Exhaust System Insulator for 1996-2000 Chevrolet Tahoe 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker H-Pipe Exhaust System Insulator for 1996-1999 Chevrolet C1500 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker H-Pipe Exhaust System Insulator for 1999-2000 Cadillac Escalade 5.7L V8Special Price $9.87 Regular Price $13.99
- Walker H-Pipe Exhaust System Insulator for 1996-1999 GMC C1500 5.7L V8Special Price $9.87 Regular Price $13.99