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 2008-2013 Toyota Highlander 3.5L V6Special Price $3.09 Regular Price $3.19
- Walker Front Pipe Left To Int Left Exhaust Clamp for 1982-1991 GMC K3500 6.2L V8Special Price $3.71 Regular Price $5.99
- MAHLE Left Exhaust Pipe Flange Gasket for 2004-2007 Buick Rainier 5.3L V8Special Price $5.51 Regular Price $5.58
- Walker Left Exhaust Pipe Flange Gasket for 2008-2011 Cadillac STS 3.6L V6Special Price $5.87 Regular Price $7.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2009 Chevrolet Silverado 1500 4.3L 4.8L 5.3L V6 V8Special Price $5.95 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2006-2009 Chevrolet Trailblazer 5.3L V8Special Price $5.67 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2009 GMC Canyon 5.3L V8Special Price $5.95 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005-2009 Saab 9-7x 5.3L V8Special Price $5.95 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2016 Chevrolet Silverado 1500 4.3L 4.8L 5.3L 6.0L 6.2L V6 V8Special Price $6.06 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 $6.06 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2014 Chevrolet Suburban 1500 5.3L 6.0L V8Special Price $6.06 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2014 GMC Yukon XL 1500 5.3L 6.0L 6.2L V8Special Price $6.35 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2010-2012 Chevrolet Colorado 5.3L V8Special Price $6.06 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2019 Chevrolet Silverado 2500 HD 6.0L V8Special Price $6.06 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2013 GMC Yukon XL 2500 6.0L V8Special Price $6.06 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004 Chevrolet Trailblazer EXT 5.3L V8Special Price $6.06 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2015 Toyota Tundra 5.7L V8Special Price $6.41 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2008-2014 Subaru Tribeca 3.6L H6Special Price $16.35 Regular Price $23.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005-2015 Toyota Tacoma 4.0L V6Special Price $16.85 Regular Price $24.99
- Walker Left Exhaust System Hanger for 1993-1997 Pontiac Firebird 5.7L V8Special Price $31.70 Regular Price $46.99
- Walker Left Exhaust Pipe Spout for 2011-2018 Ram 1500 5.7L V8Special Price $59.08 Regular Price $86.99
- Walker Quiet-Flow Left Exhaust Muffler for 1977-1981 Chevrolet Camaro 5.0L 5.7L V8Special Price $61.81 Regular Price $87.99
- Walker Quiet-Flow Left Exhaust Muffler for 1967-1981 Pontiac Firebird 3.8L 4.1L 4.9L 5.0L 5.3L 5.7L 6.6L L6 V8Special Price $63.07 Regular Price $89.99
- Walker SoundFX Left Exhaust Muffler for 1975-1976 Mercury Grand Marquis 7.5L V8Special Price $67.32 Regular Price $100.99
- Walker SoundFX Left Exhaust Muffler for 1975-1976 Ford LTD 7.5L V8Special Price $68.70 Regular Price $100.99
- Walker SoundFX Left Exhaust Muffler for 1987 GMC V2500 6.2L V8Special Price $70.36 Regular Price $71.80