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 Left Exhaust Clamp for 1988 Chevrolet R30 6.2L V8Special Price $3.99 Regular Price $5.99
- Walker Left Exhaust Clamp for 1976-1978 Chevrolet K5 Blazer 5.7L 6.6L V8Special Price $4.23 Regular Price $5.99
- Walker Left Exhaust Clamp for 1984-1986 GMC C2500 6.2L V8Special Price $4.49 Regular Price $5.99
- Walker Left Exhaust Clamp for 1978-1986 Chevrolet C10 5.7L 6.2L V8Special Price $4.49 Regular Price $5.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2000-2003 GMC Yukon XL 1500 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005-2009 GMC Envoy 5.3L V8Special Price $6.01 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2005 GMC Envoy XUV 5.3L V8Special Price $6.30 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2000-2003 Chevrolet Tahoe 4.8L 5.3L V8Special Price $6.30 Regular Price $8.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004-2014 Chevrolet Suburban 1500 5.3L 6.0L V8Special Price $6.71 Regular Price $9.99
- Fel-Pro Left Exhaust Pipe Flange Gasket for 2004 GMC Envoy XL 5.3L V8Special Price $6.71 Regular Price $9.99
- Walker Muffler Exhaust System Insulator for 1996-2001 Chevrolet Lumina 3.1L V6Special Price $7.76 Regular Price $10.99
- Walker Muffler Exhaust System Insulator for 1996-1999 Chevrolet C1500 Suburban 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker Muffler Exhaust System Insulator for 1994-1997 Oldsmobile Cutlass Supreme 3.1L V6Special Price $9.51 Regular Price $13.99
- Walker Muffler Exhaust System Insulator for 1994-1999 Oldsmobile Cutlass 3.1L V6Special Price $9.87 Regular Price $13.99
- Walker Muffler Exhaust System Hanger for 1988-1989 GMC V3500 6.2L V8Special Price $10.15 Regular Price $13.99
- 2 pc Walker Muffler Exhaust System Insulators for 1997-2001 Toyota Camry 2.2L 3.0L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2009-2016 Ford E-350 Super Duty 5.4L V8Special Price $16.95 Regular Price $23.99
- 3 pc Walker Muffler Exhaust System Insulators for 1990-1994 Eagle Talon 2.0L L4Special Price $25.80 Regular Price $36.99
- 4 pc Walker Muffler Exhaust System Insulators for 1989-1992 Ford Probe 2.2L 3.0L L4 V6Special Price $34.66 Regular Price $49.99
- Walker Quiet-Flow Left Exhaust Muffler for 1977-1981 Chevrolet Camaro 5.0L 5.7L V8Special Price $63.46 Regular Price $90.99
- Walker SoundFX Left Exhaust Muffler for 1987 Chevrolet R30 6.2L V8Special Price $73.73 Regular Price $104.99
- Walker Left Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M45 4.5L V8Special Price $3.31 Regular Price $4.99
- Walker Left Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M35 3.5L V6Special Price $3.31 Regular Price $4.99