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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- 2 pc Walker Exhaust Pipe Flange Gaskets for 1991-1995 Isuzu Rodeo 3.1L 3.2L V6Special Price $10.08 Regular Price $13.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1992-2000 Lexus SC300 3.0L L6Special Price $7.63 Regular Price $10.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1992-1995 Isuzu Trooper 3.2L V6Special Price $9.71 Regular Price $13.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1992-1993 Mazda 929 3.0L V6Special Price $12.32 Regular Price $17.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1983-2011 Mercury Grand Marquis 4.6L 5.0L 5.8L V8Special Price $12.58 Regular Price $17.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1987-1991 GMC V1500 Suburban 5.7L V8Special 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 Exhaust Pipe Flange Gaskets for 1992-1995 Chevrolet Astro 4.3L V6Special Price $32.66 Regular Price $46.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1987-1988 Chevrolet R10 Suburban 5.0L 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Converter Inlet Exhaust Pipe Flange Gaskets for 1993-1995 GMC K1500 4.3L 5.0L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Converter Inlet Exhaust Pipe Flange Gaskets for 1993-1995 GMC C1500 4.3L 5.0L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Converter Inlet Exhaust Pipe Flange Gaskets for 1994-1995 Chevrolet K1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1987-1988 Chevrolet R20 Suburban 5.7L V8Special 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 Exhaust Pipe Flange Gaskets for 1987-1991 Chevrolet Blazer 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Converter Inlet Exhaust Pipe Flange Gaskets for 1994-1995 Chevrolet K2500 4.3L 5.0L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1987-1988 Chevrolet V20 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 Converter Inlet Exhaust Pipe Flange Gaskets for 1994-1995 GMC Yukon 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 Exhaust Pipe Flange Gaskets for 1991-1996 Chevrolet G30 4.3L 5.7L V6 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 Converter Inlet Exhaust Pipe Flange Gaskets for 1994-1995 GMC C1500 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 Exhaust Pipe Flange Gaskets for 1989-1990 GMC R3500 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1987 GMC V1500 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 Exhaust Pipe Flange Gaskets for 1987-1988 Chevrolet V10 Suburban 5.7L V8Special Price $33.50 Regular Price $47.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 2004-2006 Infiniti QX56 5.6L V8Special Price $4.97 Regular Price $6.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 1995-1998 Nissan 240SX 2.4L L4Special Price $4.97 Regular Price $6.99
- 2 pc Walker Converter Rear Left To Int Pipe Exhaust Pipe Flange Gaskets for 2007-2015 Nissan Titan 5.6L V8Special Price $4.97 Regular Price $6.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 2008-2012 Nissan Pathfinder 5.6L V8Special Price $4.97 Regular Price $6.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 2005-2015 Nissan Armada 5.6L V8Special Price $4.97 Regular Price $6.99
- 2 pc Walker Exhaust Pipe Flange Gaskets for 2004-2006 Nissan Titan 5.6L V8Special Price $5.24 Regular Price $6.99