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 Converter Rear Exhaust System Insulators for 2001-2016 Kia Optima 2.4L 2.5L 2.7L L4 V6Special Price $10.91 Regular Price $15.99
- 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 1979-1981 GMC P3500 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Converter Rear Exhaust System Insulator for 2006-2011 Honda Civic 1.3L L4Special Price $5.26 Regular Price $7.99
- 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 1969-1972 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 1975-1978 GMC P35 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 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 1979-1981 GMC P2500 5.7L V8Special Price $4.25 Regular Price $5.99
- 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 Converter Rear Exhaust System Insulator for 2004-2006 Lexus RX330 3.3L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2006-2008 Lexus RX400h 3.3L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2001-2008 Ford Escape 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2015-2017 Hyundai Sonata 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Converter Rear Exhaust System Insulator for 2005-2008 Mercury Mariner 3.0L V6Special Price $5.26 Regular Price $7.99
- Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gasket for 2006-2012 Toyota RAV4 3.5L V6Special Price $6.03 Regular Price $8.99
- Walker Converter Rear Exhaust System Insulator for 2009-2017 Buick Enclave 3.6L V6Special Price $7.76 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2015 Toyota Venza 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2010 Saturn Outlook 3.6L V6Special Price $7.76 Regular Price $10.99
- 2 pc Walker Front Pipe To Y-Pipe Exhaust Pipe Flange Gaskets for 2007-2009 Lexus RX350 3.5L V6Special Price $7.96 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2017 Chevrolet Traverse 3.6L V6Special Price $8.09 Regular Price $11.99
- Walker Converter Rear Exhaust System Insulator for 2010-2017 GMC Terrain 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Converter Rear Exhaust System Insulator for 2010-2017 Chevrolet Equinox 2.4L L4Special Price $8.09 Regular Price $11.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2009-2010 Pontiac Vibe 2.4L L4Special Price $10.91 Regular Price $15.99