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
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- 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
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- 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
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- 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 Int Pipe To Muffler Assm Exhaust Clamp for 2001-2004 Ford Escape 2.0L L4Special Price $3.71 Regular Price $4.99
- Walker Int Pipe To Muffler Assm Exhaust Clamp for 2007-2015 Nissan Titan 5.6L V8Special Price $3.71 Regular Price $4.99
- Walker Int Pipe To Muffler Assm Exhaust Clamp for 2006-2017 Hyundai Sonata 2.4L L4Special 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