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 Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2011 Mazda Tribute 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2012 Ford Escape 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2011 Mercury Mariner 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Converter Left Exhaust System Insulator for 2007-2017 Toyota Tundra 4.0L 4.6L 4.7L 5.7L V6 V8Special Price $4.99 Regular Price $6.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 1984-1987 Dodge Colt 2.0L L4Special Price $5.77 Regular Price $7.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 1995 Nissan 200SX 1.6L L4Special Price $7.12 Regular Price $9.99
- Walker Converter Left Exhaust System Insulator for 2007 Chevrolet Silverado 3500 Classic 6.0L 8.1L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2003-2009 Chevrolet Express 2500 4.8L 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2003-2010 Chevrolet Express 3500 4.8L 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2003-2010 GMC Savana 3500 4.8L 6.0L V8Special Price $9.87 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2007 GMC Sierra 3500 Classic 6.0L 8.1L V8Special Price $9.87 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2001-2006 GMC Yukon 6.0L V8Special Price $9.87 Regular Price $13.99
- Walker Converter Left Exhaust System Insulator for 2001-2006 GMC Sierra 2500 HD 6.0L 8.1L V8Special Price $9.87 Regular Price $13.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1984 Chevrolet Monte Carlo 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1981-1984 Pontiac Grand Prix 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1983 Chevrolet Malibu 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1983 Buick Regal 5.7L V8Special Price $15.11 Regular Price $21.99
- 2 pc Walker Front Pipe Inlet Front Exhaust Pipe Flange Gaskets for 1996-2004 Acura RL 3.5L V6Special Price $26.67 Regular Price $37.99