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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- 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 Y-Pipe Exhaust Clamp for 1967-1970 Mercury Marauder 6.4L 7.0L V8Special Price $4.25 Regular Price $5.99
- Walker Muffler Assm Exhaust System Insulator for 1999-2001 Lexus ES300 3.0L V6Special Price $5.26 Regular Price $7.99
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- Walker Muffler Assm Exhaust System Insulator for 2012-2013 Kia Soul 2.0L L4Special Price $9.87 Regular Price $13.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2002-2006 Toyota Camry 3.0L 3.3L V6Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2007-2017 Jeep Patriot 2.0L 2.4L L4Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2008-2013 Nissan Rogue 2.5L L4Special Price $16.95 Regular Price $23.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2000-2001 Infiniti I30 3.0L V6Special Price $17.33 Regular Price $24.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2007-2017 Nissan Versa 1.6L 1.8L L4Special Price $17.33 Regular Price $24.99
- 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 1989 Dodge 2000 GTX 2.0L L4Special Price $25.12 Regular Price $35.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2004-2009 Kia Spectra 2.0L L4Special Price $30.36 Regular Price $42.99
- 4 pc Walker Muffler Assm Exhaust System Insulators for 2009-2015 Toyota Venza 3.5L V6Special Price $33.80 Regular Price $47.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 1989-1995 Nissan Pathfinder 3.0L V6Special Price $3.32 Regular Price $4.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 2004-2006 Lexus RX330 3.3L V6Special Price $3.35 Regular Price $4.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 2004-2016 Toyota Sienna 3.3L 3.5L V6Special Price $3.35 Regular Price $4.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 2010-2015 Lexus RX350 3.5L V6Special Price $3.59 Regular Price $4.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 2004-2016 Toyota Highlander 3.3L 3.5L V6Special Price $3.59 Regular Price $4.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1968 Ford Custom 5.0L 6.4L 7.0L V8Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1968 Ford Galaxie 500 5.0L 6.4L 7.0L V8Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1967-1974 Mercury Monterey 6.4L 6.6L 7.0L 7.5L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1969-1973 Ford Custom 500 5.0L 5.8L 6.4L 6.6L 7.0L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1969-1973 Ford Galaxie 500 5.0L 5.8L 6.6L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1969-1973 Ford LTD 5.0L 5.8L 6.4L 6.6L 7.0L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1975-1981 Chevrolet P30 5.7L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1969-1972 Ford Custom 5.0L 5.8L 6.4L 6.6L 7.0L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1979-1981 GMC P3500 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1968-1974 Mercury Marquis 6.4L 6.6L 7.0L 7.5L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1975-1978 GMC P35 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1979-1981 GMC P2500 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1967-1968 Mercury Commuter 6.4L 7.0L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Y-Pipe Exhaust Clamp for 1975-1978 GMC P25 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Muffler Assm Exhaust System Insulator for 2004 Subaru Legacy 2.5L H4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2014 Honda CR-V 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2003-2006 Toyota Camry 2.4L L4Special Price $4.99 Regular Price $6.99