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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- 2 pc Walker Muffler Assm Exhaust System Insulators for 2003-2019 Toyota Corolla 1.8L L4Special Price $10.82 Regular Price $15.99
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- Walker Extension Pipe To Muffler Exhaust Clamp for 1968 Chevrolet P30 Van 5.0L V8Special Price $3.43 Regular Price $5.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1996-2000 Chevrolet C3500 5.7L 7.4L V8Special Price $4.19 Regular Price $5.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2014 Honda CR-V 2.4L L4Special Price $4.68 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 1999-2008 Toyota Solara 2.2L 2.4L L4Special Price $4.94 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2012 Hyundai Elantra 2.0L L4Special Price $4.94 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2004-2012 Mitsubishi Galant 2.4L L4Special Price $7.37 Regular Price $10.99
- Walker Muffler Assm Exhaust System Insulator for 2012-2017 Jeep Compass 2.4L L4Special Price $7.37 Regular Price $11.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 1998-2008 Subaru Forester 2.5L H4Special Price $16.19 Regular Price $24.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1994-1996 Oldsmobile Cutlass 3.1L V6Special Price $18.54 Regular Price $26.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2011-2012 Lincoln MKZ 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2010-2012 Ford Fusion 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2010-2011 Mercury Milan 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1995 Nissan Pickup 2.4L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1990-1992 Infiniti M30 3.0L V6Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1990-1994 Nissan D21 2.4L L4Special Price $2.25 Regular Price $2.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1984-1991 Honda Civic 1.3L 1.5L 1.6L L4Special Price $2.32 Regular Price $2.45
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2010-2012 Ford Fusion 2.5L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1987 Nissan 200SX 2.0L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2013-2015 Kia Optima 2.0L L4Special Price $2.56 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2001-2005 Subaru Outback 2.5L H4Special Price $2.67 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2003-2006 Subaru Baja 2.5L H4Special Price $2.67 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2000-2005 Subaru Impreza 2.5L H4Special Price $2.67 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2000-2005 Subaru Legacy 2.5L H4Special Price $2.67 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1993-1994 Hyundai Elantra 1.8L L4Special Price $3.05 Regular Price $3.99