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
- Fel-Pro Left Exhaust Pipe Flange Gasket for 1999-2000 GMC Sierra 2500 5.3L V8Special Price $5.67 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004 GMC Envoy XL 5.3L V8Special Price $6.06 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005 GMC Envoy XUV 5.3L V8Special Price $5.67 Regular Price $8.99
- 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 $6.35 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 2007-2009 Saturn Aura 3.6L V6Special Price $13.22 Regular Price $18.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2007-2009 Pontiac G6 3.6L V6Special Price $13.22 Regular Price $19.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2010-2016 Subaru Legacy 3.6L H6Special Price $16.35 Regular Price $23.99
- Walker SoundFX Left Exhaust Muffler for 1975-1978 Mercury Marquis 7.5L V8Special Price $67.32 Regular Price $98.99
- Walker SoundFX Left Exhaust Muffler for 1987-1988 Chevrolet V30 6.2L V8Special Price $70.36 Regular Price $71.80
- Walker SoundFX Left Exhaust Muffler for 1987-1989 GMC R2500 6.2L V8Special Price $71.80 Regular Price $104.99
- Dorman Left Exhaust Manifold for 1980-1981 Ford E-250 Econoline 5.8L 6.6L V8Special Price $174.71 Regular Price $178.28
- Walker Left Exhaust Pipe Flange Gasket for 1998-2007 Lexus LX470 4.7L V8Special Price $3.09 Regular Price $3.99
- Walker Left Exhaust Clamp for 1996-1999 Ford Taurus 3.0L 3.4L V6 V8Special Price $3.07 Regular Price $3.18
- Walker Left Exhaust Clamp for 2010-2013 Mazda 3 2.3L 2.5L L4Special Price $3.07 Regular Price $4.99
- Walker Left Exhaust Clamp for 2010-2013 Mazda 3 2.3L 2.5L L4Special Price $3.43 Regular Price $4.99
- Walker Extension Pipe To Muffler Assm Exhaust Clamp for 1992-1993 Hyundai Sonata 2.0L L4Special Price $3.43 Regular Price $4.99
- Walker Left Exhaust Clamp for 1967-1972 Oldsmobile Cutlass Supreme 5.4L 5.7L 7.5L V8Special Price $3.67 Regular Price $4.99
- Walker Left Exhaust Clamp for 2007-2015 Nissan Armada 5.6L V8Special Price $3.67 Regular Price $4.99
- Walker Left Exhaust Clamp for 1965-1972 Oldsmobile Cutlass 5.4L 5.7L 6.6L 7.5L V8Special Price $3.43 Regular Price $4.99
- Walker Left Exhaust Clamp for 1987 Chevrolet R10 6.2L V8Special Price $3.71 Regular Price $3.80
- Walker Left Exhaust Clamp for 1970-1972 Buick Skylark 5.7L V8Special Price $3.43 Regular Price $5.99