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 H-Pipe To Muffler Exhaust Clamps for 1969-1970 Mercury Marauder 7.0L V8Special Price $14.67 Regular Price $20.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1969-1970 Mercury Marquis 7.0L V8Special Price $14.67 Regular Price $20.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2011 Mazda Tribute 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2012 Ford Escape 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 2009-2011 Mercury Mariner 2.5L L4Special Price $2.25 Regular Price $2.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 1984-1987 Dodge Colt 2.0L L4Special Price $5.77 Regular Price $7.99
- Walker Front Pipe Inlet Front Exhaust Pipe Flange Gasket for 1995 Nissan 200SX 1.6L L4Special Price $7.12 Regular Price $9.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-1999 GMC K1500 5.7L V8Special Price $8.35 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-1999 GMC C1500 5.7L V8Special Price $8.35 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-1999 Chevrolet C1500 5.7L V8Special Price $8.35 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-1998 Chevrolet C2500 5.7L V8Special Price $8.69 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-1998 GMC C2500 5.7L V8Special Price $8.69 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-2000 Chevrolet Tahoe 5.7L V8Special Price $8.69 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1996-2000 GMC Yukon 5.7L V8Special Price $8.69 Regular Price $11.99
- 2 pc Walker H-Pipe To Muffler Exhaust Clamps for 1969-1970 Mercury Monterey 7.0L V8Special Price $14.21 Regular Price $19.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1984 Chevrolet Monte Carlo 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1981-1984 Pontiac Grand Prix 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1983 Chevrolet Malibu 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1983 Buick Regal 5.7L V8Special Price $15.11 Regular Price $21.99
- 2 pc Walker Front Pipe Inlet Front Exhaust Pipe Flange Gaskets for 1996-2004 Acura RL 3.5L V6Special Price $26.67 Regular Price $37.99