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
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2003-2019 Toyota Corolla 1.8L L4Special Price $11.30 Regular Price $15.99
- 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 2010-2012 Ford Fusion 2.5L 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 2000-2005 Subaru Impreza 2.5L H4Special Price $2.67 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1983-1996 Honda Prelude 1.8L 2.0L 2.2L 2.3L L4Special Price $4.04 Regular Price $5.99
- Walker Front Pipe To Converter Exhaust Clamp for 1991 GMC Sonoma 2.5L L4Special Price $4.25 Regular Price $5.99
- Walker Muffler Assm Exhaust System Insulator for 2004-2006 Chevrolet Malibu 3.5L V6Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2008-2012 Honda Accord 2.4L L4Special Price $7.76 Regular Price $10.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2012 Hyundai Elantra 2.0L L4Special Price $7.76 Regular Price $10.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 1988-1989 Toyota Van 2.2L L4Special Price $16.95 Regular Price $23.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2010-2019 GMC Savana 2500 4.8L 6.0L V8Special Price $20.51 Regular Price $28.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2009-2012 Ford Escape 2.5L 3.0L L4 V6Special Price $25.12 Regular Price $35.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2007-2009 Pontiac Torrent 3.4L V6Special Price $30.36 Regular Price $42.99
- 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 2010-2011 Mercury Milan 2.5L 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 Front Pipe To Converter Exhaust Pipe Flange Gasket for 2004-2008 Acura TSX 2.4L L4Special Price $2.26 Regular Price $2.99
- 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 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 Legacy 2.5L H4Special Price $2.69 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 1989-1992 Toyota Corolla 1.6L L4Special Price $2.72 Regular Price $3.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2014-2015 Honda Civic 1.8L L4Special Price $3.08 Regular Price $3.99