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 Int Pipe Left To Muffler Left Exhaust Clamp for 1979-1988 GMC P3500 6.2L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Exhaust System Insulator for 1983-1985 Toyota Celica 2.4L 2.8L L4 L6Special Price $5.26 Regular Price $7.99
- Walker Int Pipe Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 2.0L L4Special Price $7.76 Regular Price $10.99
- Walker Int Pipe Exhaust System Insulator for 2002-2005 Hyundai XG350 3.5L V6Special Price $8.09 Regular Price $11.99
- Walker Int Pipe Exhaust System Insulator for 2003-2004 Buick Regal 3.8L V6Special Price $8.09 Regular Price $11.99
- Walker Int Pipe Exhaust System Insulator for 2007-2010 Ford Explorer Sport Trac 4.0L V6Special Price $8.09 Regular Price $11.99
- Walker Int Pipe Exhaust System Insulator for 1991-1996 Chevrolet G30 4.3L 5.7L 7.4L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Int Pipe Exhaust System Insulator for 2004-2006 Ford Econoline 5.4L V8Special Price $9.51 Regular Price $13.99
- Walker Int Pipe Exhaust System Hanger for 1980-1986 Chevrolet K10 5.0L 5.7L V8Special Price $10.15 Regular Price $13.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1993-1998 Toyota T100 3.0L 3.4L V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1985-1986 Nissan Maxima 3.0L V6Special Price $16.44 Regular Price $22.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1987 GMC R3500 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1987 Chevrolet R30 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1982-1986 GMC C3500 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1984-1986 Chevrolet K20 Suburban 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1989-1991 Chevrolet V2500 Suburban 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1982-1986 Chevrolet C30 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1987 Chevrolet V30 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Left To Muffler Left Exhaust Clamp for 1975-1978 GMC P35 7.4L V8Special Price $4.49 Regular Price $5.99