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 Right Converter To Muffler Exhaust Clamp for 1999-2004 GMC Sierra 2500 6.0L V8Special Price $4.49 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 2001-2006 Chevrolet Silverado 2500 HD 6.0L 8.1L V8Special Price $4.23 Regular Price $4.49
- Walker Right Converter To Muffler Exhaust Clamp for 2006 Chevrolet Silverado 3500 6.0L 8.1L V8Special Price $4.23 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 2002-2006 GMC Sierra 1500 HD 6.0L V8Special Price $4.23 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 2007 GMC Sierra 3500 Classic 6.0L 8.1L V8Special Price $4.23 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 1999-2004 Chevrolet Silverado 2500 6.0L V8Special Price $4.23 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-2000 Chevrolet C2500 5.7L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-2000 GMC K3500 5.7L 7.4L V8Special Price $4.49 Regular Price $5.99
- 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 Right Converter To Muffler Exhaust Clamp for 2007 Chevrolet Silverado 3500 Classic 6.0L 8.1L V8Special Price $7.12 Regular Price $9.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-1999 GMC Savana 1500 5.7L V8Special Price $7.12 Regular Price $9.99
- Walker Right Converter To Muffler Exhaust Clamp for 2004-2006 Chevrolet Silverado 3500 6.0L 8.1L V8Special Price $7.12 Regular Price $9.99
- Walker Right Converter To Muffler Exhaust Clamp for 2004-2006 GMC Sierra 3500 6.0L 8.1L V8Special Price $7.12 Regular Price $9.99
- Walker Right Converter To Muffler Exhaust Clamp for 2001-2006 Chevrolet Silverado 2500 HD 6.0L 8.1L V8Special Price $7.44 Regular Price $10.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-1999 Chevrolet Express 1500 5.7L V8Special Price $7.44 Regular Price $10.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-2000 GMC Savana 3500 5.7L 7.4L V8Special Price $7.44 Regular Price $10.99
- Walker Right Converter To Muffler Exhaust Clamp for 2007 GMC Sierra 3500 Classic 6.0L 8.1L V8Special Price $7.44 Regular Price $10.99
- Walker Right Converter To Muffler Exhaust Clamp for 1996-2000 Chevrolet Express 2500 5.7L V8Special Price $7.44 Regular Price $10.99
- 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 1989-1992 Dodge 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