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 Exhaust System Insulator for 2009-2014 Acura TSX 2.4L L4Special Price $6.86 Regular Price $9.99
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- Walker Front Pipe Exhaust Clamp for 1988-1992 Mazda MX-6 2.2L L4Special Price $3.99 Regular Price $5.99
- Walker Front Pipe Exhaust Clamp for 1988-1992 Mazda 626 2.2L L4Special Price $3.99 Regular Price $5.99
- Walker Front Pipe Exhaust System Insulator for 2007-2012 Hyundai Elantra 2.0L L4Special Price $4.99 Regular Price $6.99
- Walker Converter Exhaust System Insulator for 2001-2004 Mazda Tribute 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Front Pipe Exhaust System Insulator for 2006-2017 Hyundai Sonata 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Front Pipe Exhaust System Insulator for 2009-2016 Kia Optima 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Converter Exhaust System Insulator for 2004-2007 Toyota Highlander 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Front Pipe Exhaust System Insulator for 2013-2016 Hyundai Santa Fe Sport 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Front Pipe Exhaust System Insulator for 2007-2009 Acura MDX 3.7L V6Special Price $6.56 Regular Price $8.99
- Walker Front Pipe Exhaust System Insulator for 1990-1991 Eagle Vista 1.5L L4Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 1.8L 2.0L L4Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 1991-1993 Eagle 2000 GTX 2.0L L4Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 2009-2012 Ford Flex 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 2011-2014 Ford Edge 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 1990-1994 Eagle Talon 1.8L 2.0L L4Special Price $7.76 Regular Price $10.99
- Walker Front Pipe Exhaust System Insulator for 2011-2019 Ford Explorer 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 1984-1994 Plymouth Colt 1.5L 1.6L 1.8L 2.0L 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 2008-2019 Ford Taurus 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 1989-1993 Mitsubishi Galant 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 1989-1994 Eagle Summit 1.5L 1.8L 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 1984-1992 Dodge Colt 1.5L 1.6L 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 2008-2009 Ford Taurus X 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 2010-2012 Lincoln MKT 3.7L V6Special Price $8.09 Regular Price $11.99
- Walker Front Pipe Exhaust System Insulator for 1990-1994 Plymouth Laser 1.8L 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Converter Exhaust System Insulator for 1999-2000 GMC K2500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 1994-1995 Chevrolet C1500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2009-2016 Ford E-350 Super Duty 5.4L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2003-2005 GMC Savana 2500 4.3L 5.3L V6 V8Special Price $9.51 Regular Price $13.99