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 Int Pipe Exhaust System Hanger for 1982-1988 GMC P2500 6.2L V8Special Price $10.15 Regular Price $13.99
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- Walker Muffler To Extension Pipe Exhaust Clamp for 2007-2010 Ford Explorer Sport Trac 4.6L V8Special Price $4.25 Regular Price $5.99
- Walker Muffler To Extension Pipe Exhaust Clamp for 2007-2008 Saturn Outlook 3.6L V6Special Price $4.25 Regular Price $5.99
- Walker Int Pipe Exhaust System Insulator for 2008-2012 Chevrolet Malibu 2.4L 3.5L 3.6L L4 V6Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 2013-2015 Subaru XV Crosstrek 2.0L H4Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 2001-2006 Kia Optima 2.4L 2.5L 2.7L L4 V6Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 2001-2005 Kia Magentis 2.4L 2.5L 2.7L L4 V6Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 2016 Subaru Crosstrek 2.0L H4Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 1988-1992 Daihatsu Charade 1.0L 1.3L L3 L4Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 1983-1985 Toyota Celica 2.4L 2.8L L4 L6Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 2005-2008 Toyota Matrix 1.8L L4Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 2012-2016 Subaru Impreza 2.0L H4Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 2007-2010 Pontiac G6 3.5L 3.6L V6Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 2013-2018 Buick Encore 1.4L L4Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 1990 Nissan Axxess 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 2010-2012 Subaru Outback 2.5L H4Special Price $5.26 Regular Price $7.99
- Walker Muffler To Extension Pipe Exhaust Clamp for 1990-1996 Chevrolet P30 7.4L V8Special Price $7.12 Regular Price $9.99
- Walker Muffler To Extension Pipe Exhaust Clamp for 2011-2017 Ford F-350 Super Duty 6.2L V8Special Price $7.12 Regular Price $9.99
- Walker Muffler To Extension Pipe Exhaust Clamp for 2011-2017 Ford F-250 Super Duty 6.2L V8Special Price $7.12 Regular Price $9.99