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 Extension Pipe Exhaust System Insulator for 1998-2004 Chrysler Concorde 3.2L 3.5L V6Special Price $7.76 Regular Price $10.99
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- Walker Extension Pipe Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 1.8L 2.0L L4Special Price $7.76 Regular Price $10.99
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- Walker Extension Pipe Exhaust System Insulator for 1994-1995 Chevrolet C1500 4.3L 5.0L 5.7L 6.5L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Muffler Exhaust System Insulator for 1991-1996 GMC G3500 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Muffler Exhaust System Insulator for 1996-1999 GMC K2500 Suburban 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 GMC K2500 4.3L 5.0L 5.7L 6.5L 7.4L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Muffler Exhaust System Insulator for 1990-1995 Chevrolet K3500 5.7L 6.2L V8Special Price $9.87 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007-2010 Cadillac Escalade 6.2L V8Special Price $9.87 Regular Price $13.99
- 2 pc Walker Muffler Exhaust System Insulators for 2005-2010 Chevrolet Cobalt 2.2L 2.4L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2006-2011 Chevrolet HHR 2.2L 2.4L L4Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Exhaust System Insulators for 1997-2005 Buick Century 3.1L V6Special Price $16.95 Regular Price $23.99
- Walker Muffler Exhaust System Insulator for 1995-1997 Honda Accord 2.7L V6Special Price $4.11 Regular Price $5.99
- Walker Muffler Exhaust System Insulator for 1992-1996 Honda Prelude 2.2L 2.3L L4Special Price $4.11 Regular Price $5.99
- Walker Muffler Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 1.8L 2.0L L4Special Price $4.99 Regular Price $6.99
- Walker Muffler Exhaust System Insulator for 2000-2007 Ford Taurus 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 2003-2010 Pontiac Vibe 1.8L 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 2000-2005 Mercury Sable 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 2000-2007 Ford Taurus 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 1991-1992 Nissan Axxess 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Muffler Exhaust System Insulator for 1990-1994 Plymouth Laser 1.8L 2.0L L4Special Price $5.26 Regular Price $7.99
- Walker Muffler Exhaust System Insulator for 1993-1997 Toyota Corolla 1.6L 1.8L L4Special Price $6.56 Regular Price $8.99
- Walker Muffler Exhaust System Insulator for 1993-1997 Geo Prizm 1.6L 1.8L L4Special Price $6.56 Regular Price $8.99
- Walker Extension Pipe Exhaust System Insulator for 2014-2015 Kia Sorento 2.4L L4Special Price $7.76 Regular Price $10.99