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 Muffler Assm Exhaust System Insulators for 2003-2019 Toyota Corolla 1.8L L4Special Price $11.30 Regular Price $15.99
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- 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 1979-1981 GMC P2500 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 Muffler Assm Exhaust System Insulator for 2004 Subaru Legacy 2.5L H4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2014 Honda CR-V 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2003-2006 Toyota Camry 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2014-2019 Kia Soul 1.6L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2012-2017 Hyundai Accent 1.6L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 1987-1990 Toyota Tercel 1.5L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 2012-2017 Kia Rio 1.6L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Assm Exhaust System Insulator for 1999-2001 Lexus ES300 3.0L V6Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2004 Subaru Outback 2.5L H4Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 1999-2008 Toyota Solara 2.2L 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2012 Hyundai Elantra 2.0L L4Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2004-2006 Chevrolet Malibu 3.5L V6Special Price $5.26 Regular Price $7.99
- Walker Muffler Assm Exhaust System Insulator for 2000-2004 Toyota Avalon 3.0L V6Special Price $5.26 Regular Price $7.99
- 2 pc Walker Y-Pipe To Int Pipe Exhaust Pipe Flange Gaskets for 1985-1987 Ford F-350 7.5L V8Special Price $5.95 Regular Price $8.99
- Walker Y-Pipe To Int Pipe Exhaust Pipe Flange Gasket for 1989-1995 Nissan Pathfinder 3.0L V6Special Price $6.15 Regular Price $8.99
- Walker Muffler Assm Exhaust System Insulator for 2007-2014 Honda CR-V 2.4L L4Special Price $6.56 Regular Price $8.99