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 Pipe Flange Gasket for 2008-2011 Cadillac STS 3.6L V6Special Price $5.92 Regular Price $7.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2000-2003 GMC Yukon XL 1500 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007 GMC Sierra 1500 Classic 5.3L V8Special Price $6.30 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2013 Chevrolet Suburban 2500 6.0L V8Special Price $6.41 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2016 Chevrolet Express 3500 4.8L 6.0L V8Special Price $6.41 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2016 Cadillac Escalade 5.3L 6.0L 6.2L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2013 Chevrolet Avalanche 5.3L 6.0L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2010-2016 Subaru Legacy 3.6L H6Special Price $16.98 Regular Price $23.99
- Walker Left Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M45 4.5L V8Special Price $3.31 Regular Price $4.99
- Walker Left Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M35 3.5L V6Special Price $3.31 Regular Price $4.99
- Walker Left Exhaust Pipe Flange Gasket for 1998-2007 Lexus LX470 4.7L V8Special Price $3.59 Regular Price $4.99
- Walker Left Exhaust Pipe Flange Gasket for 1997-2000 Ford Explorer 4.0L V6Special Price $4.52 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
- Walker Left Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M35 3.5L V6Special Price $5.86 Regular Price $7.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2003 Cadillac Escalade 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2003 Chevrolet Express 3500 4.8L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2009 Chevrolet Silverado 1500 4.3L 4.8L 5.3L V6 V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2003 GMC Savana 3500 4.8L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005-2007 Buick Rainier 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2003 GMC Savana 2500 4.3L 4.8L 5.3L V6 V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2009 Chevrolet Colorado 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2003 Chevrolet Express 1500 4.3L 5.3L V6 V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007 Chevrolet Silverado 1500 Classic 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2000-2003 GMC Yukon 4.8L 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2003-2006 GMC Envoy XL 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005-2009 GMC Envoy 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2006-2009 Chevrolet Trailblazer 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2003 Chevrolet Avalanche 1500 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2000-2003 Chevrolet Suburban 1500 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2009 Hummer H3T 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2000 GMC Sierra 2500 5.3L V8Special Price $6.01 Regular Price $8.99
- Walker Left Exhaust Pipe Flange Gasket for 2008-2019 Toyota Sequoia 4.6L 5.7L V8Special Price $6.03 Regular Price $8.99
- Walker Left Exhaust Pipe Flange Gasket for 2003-2008 Infiniti FX35 3.5L V6Special Price $6.15 Regular Price $8.99