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 Left To Muffler Exhaust Clamp for 1996-2000 Chevrolet C3500 5.7L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 2001-2006 GMC Yukon 6.0L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 1996-2000 GMC C2500 5.7L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 1996-2000 Chevrolet K2500 5.7L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 1996-2000 Chevrolet K3500 5.7L 7.4L V8Special Price $4.23 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 1996-2000 GMC K3500 5.7L 7.4L V8Special Price $4.49 Regular Price $5.99
- Walker Int Pipe Left To Muffler Exhaust Clamp for 1996-2000 Chevrolet C2500 5.7L 7.4L V8Special Price $4.49 Regular Price $5.99
- Walker Front Pipe Front to Rear Exhaust Pipe Flange Gasket for 1995-1999 Nissan Sentra 1.6L L4Special Price $7.12 Regular Price $9.99
- Walker Front Pipe Front to Rear Exhaust Bolt & Spring for 1996-1998 Nissan 200SX 1.6L L4Special Price $20.00 Regular Price $28.99
- Walker Front Pipe Front to Rear Exhaust Bolt & Spring for 1998-2000 Toyota RAV4 2.0L L4Special Price $20.00 Regular Price $28.99
- 2 pc Walker Front Pipe Front to Rear Exhaust Bolt & Springs for 1994-1997 Honda Accord 2.2L L4Special Price $26.26 Regular Price $37.99