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 Tail Pipe Exhaust System Insulator for 1991 Chevrolet R3500 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2019 Chevrolet Express 2500 4.3L 4.8L 5.0L 5.3L 5.7L 6.0L 6.5L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2016 GMC Savana 3500 4.8L 5.7L 6.0L 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2000 GMC Yukon 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1994-1995 Chevrolet C1500 Suburban 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1990-1994 Chevrolet C35 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1994-1995 GMC K1500 Suburban 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2000 Chevrolet Tahoe 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991-1995 Chevrolet G20 4.3L 5.0L 5.7L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2014 GMC Savana 1500 4.3L 5.0L 5.3L 5.7L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 2007-2010 Chevrolet Silverado 3500 HD 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 2007-2010 Chevrolet Silverado 2500 HD 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991 Chevrolet V3500 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991-1995 GMC G1500 4.3L 5.0L 5.7L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1992-1996 Chevrolet G30 4.3L 5.7L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2016 Chevrolet Express 3500 4.8L 5.7L 6.0L 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 2007 Chevrolet Silverado 2500 HD Classic 6.0L 8.1L V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Hanger for 1981-1982 Chevrolet C20 4.8L L6Special Price $9.78 Regular Price $13.99
- Walker Tail Pipe Exhaust System Hanger for 1983-1985 Chevrolet K20 4.8L L6Special Price $9.78 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991-1995 Chevrolet G10 4.3L 5.0L 5.7L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1992-1996 GMC G3500 4.3L 5.7L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1990-1995 GMC K3500 5.7L 6.2L V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2014 Chevrolet Express 1500 4.3L 5.0L 5.3L 5.7L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 2007-2010 GMC Sierra 3500 HD 6.0L V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991-1995 GMC G2500 4.3L 5.0L 5.7L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1990-1995 Chevrolet C3500 5.7L 6.2L V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1994-1995 GMC C1500 Suburban 5.7L V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1996-2019 GMC Savana 2500 4.3L 4.8L 5.0L 5.3L 5.7L 6.0L 6.5L V6 V8Special Price $9.87 Regular Price $13.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 1996-1998 Toyota T100 3.4L V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 1997-2003 Dodge Dakota 2.5L 3.9L 5.2L L4 V6 V8Special Price $16.44 Regular Price $22.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 2006-2012 Toyota RAV4 3.5L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 2006-2010 Jeep Commander 3.7L 4.7L 5.7L V6 V8Special Price $16.44 Regular Price $22.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 1994-2002 Dodge Ram 2500 5.9L L6 V8Special Price $16.44 Regular Price $22.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 1987-1995 Jeep Wrangler 2.5L 4.0L 4.2L L4 L6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 2005-2010 Jeep Grand Cherokee 3.7L 4.7L 5.7L V6 V8Special Price $16.95 Regular Price $23.99
- 2 pc Walker Tail Pipe Exhaust System Insulators for 1994-2002 Dodge Ram 3500 5.9L L6 V8Special Price $16.95 Regular Price $23.99