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 To Left Muffler Exhaust Pipe Flange Gasket for 2008-2014 Subaru Tribeca 3.6L H6Special Price $5.77 Regular Price $7.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1979-1986 GMC C3500 6.2L 7.4L V8Special Price $21.06 Regular Price $29.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1984-1986 GMC C1500 Suburban 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1987-1991 GMC R1500 Suburban 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1987-1991 GMC R2500 Suburban 6.2L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1989-1991 Chevrolet R1500 Suburban 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1987-1988 Chevrolet R10 Suburban 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1984-1986 GMC C2500 Suburban 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe To Left Muffler Exhaust Clamp for 1989-1991 Chevrolet R2500 Suburban 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Front Pipe Right Exhaust System Hanger for 1975-1985 Chevrolet P30 7.4L V8Special Price $9.78 Regular Price $13.99
- Walker Front Pipe Right Exhaust System Hanger for 1975-1978 GMC P35 7.4L V8Special Price $9.78 Regular Price $13.99
- Walker Front Pipe Right Exhaust System Hanger for 1979-1985 GMC P3500 7.4L V8Special Price $10.15 Regular Price $13.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1982-1986 GMC K3500 6.2L V8Special Price $20.48 Regular Price $28.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1987 GMC R3500 6.2L V8Special Price $20.48 Regular Price $28.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1987 Chevrolet V30 6.2L V8Special Price $20.48 Regular Price $28.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1975-1978 GMC C35 7.4L V8Special Price $20.48 Regular Price $28.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1987 Chevrolet R30 6.2L V8Special Price $21.06 Regular Price $29.99