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.
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- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1999-2000 Honda Civic 1.6L L4Special Price $3.89 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1979-1981 GMC P2500 5.7L V8Special Price $4.49 Regular Price $5.99
- 2 pc Walker Y-Pipe To Int Pipe Exhaust Clamps for 1989-1993 Chevrolet C2500 6.2L V8Special Price $18.56 Regular Price $26.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2011-2012 Lincoln MKZ 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2010-2012 Ford Fusion 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2010-2011 Mercury Milan 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2012-2013 Kia Soul 2.0L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2010-2012 Ford Fusion 2.5L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2010-2011 Mercury Milan 2.5L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1986-1988 Nissan Stanza 2.0L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 2007-2010 Kia Rondo 2.4L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1993-1995 Honda Civic del Sol 1.5L L4Special Price $3.04 Regular Price $3.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1988-1995 Honda Civic 1.5L 1.6L L4Special Price $3.27 Regular Price $4.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1988-1993 Acura Integra 1.6L 1.7L 1.8L L4Special Price $3.27 Regular Price $4.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1988-1991 Honda CRX 1.6L L4Special Price $3.27 Regular Price $4.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1989-1992 Toyota Corolla 1.6L L4Special Price $3.35 Regular Price $4.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1965-1966 Ford Mustang 4.7L V8Special Price $3.71 Regular Price $4.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1967 Chevrolet C30 Pickup 4.6L V8Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1967-1968 GMC C25 C2500 Pickup 4.6L 5.0L V8Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1981-1982 Ford F-350 5.8L 6.6L V8Special Price $3.99 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1975-1978 GMC P25 5.7L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1973-1974 Cadillac Fleetwood 7.7L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1975-1981 Chevrolet P20 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1980-1986 GMC C2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1973-1974 Cadillac DeVille 7.7L V8Special Price $4.49 Regular Price $5.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1985-1988 Mitsubishi Mirage 1.6L L4Special Price $5.49 Regular Price $7.99
- Walker Front Pipe Inlet Exhaust Pipe Flange Gasket for 1984-1987 Plymouth Colt 2.0L L4Special Price $5.49 Regular Price $7.99
- 2 pc Walker Y-Pipe To Int Pipe Exhaust Pipe Flange Gaskets for 1985-1987 Ford F-350 7.5L V8Special Price $5.95 Regular Price $8.99
- Walker Y-Pipe To Int Pipe Exhaust Pipe Flange Gasket for 1989-1995 Nissan Pathfinder 3.0L V6Special Price $6.15 Regular Price $8.99