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 Y-Pipe To Int Pipe Exhaust Clamp for 1979-1981 GMC P2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Exhaust System Insulator for 1983-1985 Toyota Celica 2.4L 2.8L L4 L6Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 1992-1995 Chevrolet K1500 Suburban 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Int Pipe Exhaust System Hanger for 1978 GMC C15 5.0L 5.7L V8Special Price $9.78 Regular Price $13.99
- Walker Int Pipe Exhaust System Insulator for 2002-2006 Chevrolet Avalanche 1500 5.3L V8Special Price $9.87 Regular Price $13.99
- 2 pc Walker Y-Pipe To Int Pipe Exhaust Clamps for 1989-1993 Chevrolet C2500 6.2L V8Special Price $18.56 Regular Price $26.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1965-1966 Ford Mustang 4.7L V8Special Price $3.71 Regular Price $4.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1967 Chevrolet C30 Pickup 4.6L V8Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1967-1968 GMC C25 C2500 Pickup 4.6L 5.0L V8Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1981-1982 Ford F-350 5.8L 6.6L V8Special Price $3.99 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1975-1978 GMC P25 5.7L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1973-1974 Cadillac Fleetwood 7.7L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1975-1981 Chevrolet P20 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1980-1986 GMC C2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1973-1974 Cadillac DeVille 7.7L V8Special Price $4.49 Regular Price $5.99
- 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
- Walker Int Pipe Exhaust System Insulator for 2013-2015 Subaru XV Crosstrek 2.0L H4Special Price $4.99 Regular Price $6.99
- 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 2001-2005 Kia Magentis 2.4L 2.5L 2.7L L4 V6Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 2016 Subaru Crosstrek 2.0L H4Special Price $4.99 Regular Price $6.99
- Walker Int Pipe Exhaust System Insulator for 1988-1992 Daihatsu Charade 1.0L 1.3L L3 L4Special Price $4.99 Regular Price $6.99