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 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 1966 GMC PB25 Series 4.1L L6Special Price $3.96 Regular Price $5.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2009 Hyundai Tucson 2.7L V6Special Price $6.21 Regular Price $8.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2007-2011 Toyota Camry 3.5L V6Special Price $3.35 Regular Price $4.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2007-2017 Lexus ES350 3.5L V6Special Price $3.59 Regular Price $4.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2005-2012 Toyota Avalon 3.5L V6Special Price $3.59 Regular Price $4.99
- 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 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 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 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 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 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 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 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 1963-1966 Chevrolet C30 Pickup 3.8L 4.1L 4.8L 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 Resonator Assm To Right Muffler Assm Exhaust Clamp for 2007-2010 Ford Edge 3.5L V6Special Price $3.99 Regular Price $5.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Clamp for 2007-2009 Acura MDX 3.7L V6Special Price $4.23 Regular Price $5.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2005-2009 Subaru Outback 2.5L H4Special Price $5.49 Regular Price $7.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2005-2009 Subaru Legacy 2.5L H4Special Price $5.77 Regular Price $7.99
- Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2000-2005 Lexus GS300 3.0L L6Special Price $6.03 Regular Price $8.99