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 Rear To Muffler Exhaust Clamp for 1997-1998 Ford F-150 4.2L 4.6L 5.4L V6 V8Special Price $4.23 Regular Price $5.99
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- Walker Int Pipe Exhaust System Insulator for 2011-2018 Ram 1500 5.7L V8Special Price $7.76 Regular Price $10.99
- Walker Int Pipe Exhaust System Insulator for 2006-2017 Hyundai Sonata 2.4L L4Special Price $7.76 Regular Price $10.99
- Walker Int Pipe Exhaust System Insulator for 2006-2011 Mercury Milan 2.3L 2.5L 3.0L L4 V6Special Price $7.76 Regular Price $10.99
- Walker Int Pipe Exhaust System Insulator for 1986-1991 Plymouth Colt 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Int Pipe Exhaust System Insulator for 2010-2012 Ford Flex 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Int Pipe Exhaust System Insulator for 1992-1994 Chevrolet G20 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Int Pipe Exhaust System Insulator for 1993-1999 GMC C1500 4.3L 5.0L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Cadillac Fleetwood 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Cadillac DeVille 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Buick Electra 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Cadillac Commercial Chassis 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1965-1967 Cadillac DeVille 7.0L V8Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 2009 Ford Flex 3.5L V6Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1987-1995 Ford F-250 4.9L 5.0L L6 V8Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1988-1995 Ford F-350 5.8L 7.5L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1965-1967 Cadillac Fleetwood 7.0L V8Special Price $4.25 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 GMC P3500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 GMC P2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 Chevrolet P20 5.7L V8Special Price $4.49 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 2001-2006 Kia Optima 2.4L 2.5L 2.7L L4 V6Special Price $4.99 Regular Price $6.99