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 Rear To Muffler Exhaust Clamp for 1985 Cadillac Fleetwood 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Cadillac DeVille 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Buick Electra 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1985 Cadillac Commercial Chassis 4.3L V6Special Price $3.71 Regular Price $4.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1965-1967 Cadillac DeVille 7.0L V8Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 2009 Ford Flex 3.5L V6Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1987-1995 Ford F-250 4.9L 5.0L L6 V8Special Price $3.99 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1997-1998 Ford F-150 4.2L 4.6L 5.4L V6 V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1988-1995 Ford F-350 5.8L 7.5L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1965-1967 Cadillac Fleetwood 7.0L V8Special Price $4.25 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 GMC P2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 GMC P3500 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 Chevrolet P20 5.7L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 2005-2007 Ford F-250 Super Duty 5.4L 6.8L V10 V8Special Price $7.12 Regular Price $9.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1992-1996 GMC G3500 5.7L V8Special Price $7.12 Regular Price $9.99
- Walker Int Pipe Rear To Muffler Exhaust Clamp for 1992-1996 Chevrolet G30 5.7L V8Special Price $7.44 Regular Price $10.99
- 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