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 Converter Front To Int Pipe Exhaust Pipe Flange Gasket for 2007-2010 Lincoln MKX 3.5L V6Special Price $6.21 Regular Price $8.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1988-1989 GMC K3500 5.7L 7.4L V8Special Price $7.12 Regular Price $9.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1989 Chevrolet V3500 5.7L 7.4L V8Special Price $7.12 Regular Price $9.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1988-1989 Chevrolet K3500 5.7L 7.4L V8Special Price $7.12 Regular Price $9.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1987-1988 Chevrolet R30 5.7L 7.4L V8Special Price $7.12 Regular Price $9.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1987-1988 Chevrolet V30 5.7L 7.4L V8Special Price $7.44 Regular Price $10.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1987-1988 Chevrolet P30 5.7L V8Special Price $7.44 Regular Price $10.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1987-1989 GMC R3500 5.7L 7.4L V8Special Price $7.44 Regular Price $10.99
- Walker Converter Front To Int Pipe Exhaust Clamp for 1989 Chevrolet R3500 5.7L 7.4L V8Special Price $7.44 Regular Price $10.99
- Walker Converter Front To Int Pipe Exhaust Pipe Flange Gasket for 2007-2013 Suzuki SX4 2.0L L4Special Price $7.44 Regular Price $10.99
- Walker Converter Front To Int Pipe Exhaust Bolt & Spring for 2007-2013 Suzuki SX4 2.0L L4Special Price $20.00 Regular Price $28.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 GMC K3500 5.7L 6.2L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 Chevrolet K2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1994 Chevrolet Blazer 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 GMC R3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1990 GMC S15 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 GMC V3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 Chevrolet R3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 Chevrolet C2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1993 GMC K1500 Suburban 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1993 Chevrolet K1500 Suburban 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991-1994 Oldsmobile Bravada 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1994 GMC Jimmy 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1993 Chevrolet C1500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 GMC C1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 GMC K2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1994 Chevrolet S10 4.3L V6Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1996 GMC G3500 4.3L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 Chevrolet K3500 5.7L 6.2L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 Chevrolet C1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1994 GMC Jimmy 4.3L V6Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 Chevrolet K1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 GMC K1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 GMC C2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1991 GMC R3500 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1995 Chevrolet C2500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1987-1996 Chevrolet P30 4.3L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1995 Chevrolet K2500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1995 GMC K2500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 Chevrolet C3500 5.7L 6.2L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1991-1994 Oldsmobile Bravada 4.3L V6Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1993 GMC K1500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.72 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1995 Chevrolet K2500 Suburban 5.7L V8Special Price $32.72 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1991 GMC S15 Jimmy 4.3L V6Special Price $32.72 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 GMC C3500 5.7L 6.2L V8Special Price $32.72 Regular Price $46.99