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 Muffler Exhaust Clamp for 1967-1974 GMC G15 G1500 Van 3.8L 4.1L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1967 Chevrolet P30 Series 3.8L 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1966 Chevrolet C30 Pickup 3.8L 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Converter Rear Exhaust System Insulator for 2010-2017 Chevrolet Equinox 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1971-1974 Chevrolet G30 Van 4.1L 4.8L L6Special Price $3.71 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1973-1975 Ford F-250 3.9L 4.9L L6Special Price $3.71 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1967 Chevrolet P20 Series 3.8L 4.1L 4.8L L6Special Price $3.71 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1971-1972 Chevrolet C20 Pickup 4.1L 4.8L L6Special Price $3.71 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1968-1972 Chevrolet P20 Van 4.1L 4.8L L6Special Price $3.71 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1972 GMC P25 P2500 Van 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1978 Ford F-350 4.9L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1974 Chevrolet G20 Van 3.8L 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 GMC K15 K1500 Pickup 3.8L 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 Chevrolet K20 Pickup 4.1L 4.8L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1969-1974 Ford E-200 Econoline 2.8L 3.9L 4.9L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1966 GMC PB25 Series 4.1L L6Special Price $3.96 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1969-1974 Ford E-100 Econoline 3.9L L6Special Price $3.96 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 2006-2011 Honda Civic 1.3L L4Special Price $5.26 Regular Price $7.99
- 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 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
- 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