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 2003-2010 Pontiac Vibe 1.8L 2.4L L4Special Price $4.99 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 1989-1992 Dodge Colt 1.5L L4Special Price $7.76 Regular Price $10.99
- Walker Extension Pipe Exhaust System Insulator for 2001-2004 Chevrolet Silverado 2500 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1994-1995 GMC C1500 4.3L 5.0L 5.7L 6.5L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1996-2014 Chevrolet Tahoe 4.8L 5.3L 5.7L 6.2L V8Special Price $9.87 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 Chevrolet K3500 5.7L 6.5L 7.4L V8Special Price $9.87 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2001-2004 GMC Sierra 2500 6.0L V8Special Price $9.87 Regular Price $13.99
- Walker Flex Pipe To Converter Exhaust Pipe Flange Gasket for 2000 Subaru Outback 2.5L H4Special Price $2.69 Regular Price $3.99
- Walker Flex Pipe To Converter Exhaust Pipe Flange Gasket for 1999-2003 Acura TL 3.2L V6Special Price $4.04 Regular Price $5.99
- Walker Flex Pipe To Converter Exhaust Clamp for 1997-1999 Jeep Wrangler 2.5L 4.0L L4 L6Special Price $4.49 Regular Price $5.99
- 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 2000-2005 Mercury Sable 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 Extension Pipe Exhaust System Insulator for 2014-2015 Kia Sorento 2.4L L4Special Price $7.76 Regular Price $10.99
- Walker Extension Pipe Exhaust System Insulator for 1989-1992 Plymouth Colt 1.5L L4Special Price $7.76 Regular Price $10.99
- Walker Extension Pipe Exhaust System Insulator for 1998-2004 Chrysler Concorde 3.2L 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Extension Pipe Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 1.8L 2.0L L4Special Price $7.76 Regular Price $10.99
- Walker Extension Pipe Exhaust System Insulator for 2000-2004 Dodge Intrepid 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 2013-2016 Hyundai Santa Fe Sport 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 1990-1994 Plymouth Laser 1.8L 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 1999-2004 Chrysler 300M 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 1990-1994 Eagle Talon 1.8L 2.0L L4Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 2015-2016 Chevrolet Colorado 3.6L V6Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1996-2014 GMC Yukon 4.8L 5.3L 5.7L 6.2L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 Chevrolet C3500 5.7L 6.5L 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007-2017 Chevrolet Silverado 3500 HD 6.0L V8Special Price $9.51 Regular Price $13.99
- 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 Extension Pipe Exhaust System Insulator for 1994-1995 GMC K1500 4.3L 5.0L 5.7L 6.5L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1991 Chevrolet R3500 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 GMC C2500 4.3L 5.0L 5.7L 6.5L 7.4L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007 GMC Sierra 2500 HD Classic 6.0L 8.1L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007-2017 GMC Sierra 3500 HD 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 GMC C3500 5.7L 6.5L 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007-2017 GMC Sierra 2500 HD 6.0L V8Special Price $9.51 Regular Price $13.99