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 Left Exhaust Clamp for 2007-2015 Nissan Armada 5.6L V8Special Price $3.71 Regular Price $4.99
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- Walker Front Pipe To Converter Exhaust Clamp for 1991 GMC Sonoma 2.5L L4Special Price $4.25 Regular Price $5.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2014 Toyota FJ Cruiser 4.0L V6Special Price $5.26 Regular Price $7.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2003-2006 Isuzu Ascender 5.3L V8Special Price $6.30 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2016 Chevrolet Tahoe 4.8L 5.3L 6.0L 6.2L V8Special Price $6.41 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007 Chevrolet Silverado 1500 Classic 4.3L 4.8L 5.3L V6 V8Special Price $6.41 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2014 Chevrolet Suburban 1500 5.3L 6.0L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2016 Cadillac Escalade ESV 6.2L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2016 GMC Savana 2500 4.3L 4.8L 5.3L 6.0L V6 V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2016 GMC Sierra 1500 4.3L 4.8L 5.3L 6.0L 6.2L V6 V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2006-2009 Chevrolet Trailblazer 6.0L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007 GMC Sierra 1500 Classic 4.3L 4.8L 5.3L V6 V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2016 GMC Yukon 4.8L 5.3L 6.0L 6.2L V8Special Price $6.71 Regular Price $9.99
- Walker Front Pipe To Converter Exhaust Bolt & Spring for 1996-1999 Isuzu Oasis 2.2L 2.3L L4Special Price $12.75 Regular Price $17.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2009 Pontiac G6 3.6L V6Special Price $13.77 Regular Price $19.99
- Walker SoundFX Left Exhaust Muffler for 1987-1989 GMC R2500 6.2L V8Special Price $73.73 Regular Price $104.99
- 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 2011-2012 Lincoln MKZ 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2010-2011 Mercury Milan 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 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 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