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 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
- Walker Rear Converter To Muffler Assm Exhaust Bolt & Spring for 2003-2004 Lexus GX470 4.7L V8Special Price $19.44 Regular Price $27.99
- Walker Rear Converter To Muffler Assm Exhaust Bolt & Spring for 2006 Lexus IS350 3.5L V6Special Price $19.44 Regular Price $27.99
- Walker Rear Converter To Muffler Assm Exhaust Bolt & Spring for 2006-2013 Lexus IS250 2.5L V6Special Price $20.00 Regular Price $28.99
- 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 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 1979-1986 GMC C3500 6.2L 7.4L V8Special Price $21.06 Regular Price $29.99
- 2 pc Walker Front Pipe Right Exhaust System Hangers for 1987 Chevrolet R30 6.2L V8Special Price $21.06 Regular Price $29.99