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 Y-Pipe To Int Pipe Exhaust Clamp for 1979-1981 GMC P2500 5.7L V8Special Price $4.49 Regular Price $5.99
- Fel-Pro Right Exhaust Pipe Flange Gasket for 1999-2014 GMC Savana 1500 4.3L 5.3L V6 V8Special Price $9.13 Regular Price $12.99
- Walker Right Exhaust System Hanger for 1988-1989 GMC R2500 6.2L V8Special Price $9.78 Regular Price $13.99
- Walker Right Exhaust System Hanger for 1981-1986 GMC K3500 7.4L V8Special Price $10.15 Regular Price $13.99
- 2 pc Walker Y-Pipe To Int Pipe Exhaust Clamps for 1989-1993 Chevrolet C2500 6.2L V8Special Price $18.56 Regular Price $26.99
- Walker Right Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M45 4.5L V8Special Price $3.08 Regular Price $3.99
- Walker Right Exhaust Pipe Flange Gasket for 2006-2010 Infiniti M35 3.5L V6Special Price $3.31 Regular Price $4.99
- Fel-Pro Right Exhaust Pipe Flange Gasket for 1990-1992 Toyota Land Cruiser 4.0L L6Special Price $3.50 Regular Price $4.99
- Walker Y-Pipe To Int Pipe Exhaust Clamp for 1965-1966 Ford Mustang 4.7L V8Special Price $3.71 Regular Price $4.99
- Walker Right Exhaust Clamp for 1973-1974 GMC K15 K1500 Pickup 5.7L V8Special Price $3.71 Regular Price $4.99
- Walker Right Exhaust Clamp for 1979-1992 Cadillac Eldorado 4.9L 5.7L 6.0L V8Special Price $3.71 Regular Price $4.99
- Walker Right Exhaust Clamp for 1991-1997 Mercury Cougar 4.6L 5.0L V8Special Price $3.71 Regular Price $4.99
- Walker Right Exhaust Clamp for 1996-1999 Pontiac Bonneville 3.8L V6Special Price $3.96 Regular Price $5.99