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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- Fel-Pro Exhaust Manifold Gasket Set for 1987-1991 GMC R1500 Suburban 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1987-1989 GMC R2500 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1960-1965 GMC Suburban 4.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1955-1981 Pontiac Laurentian 4.3L 4.4L 4.6L 5.0L 5.3L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1959 Chevrolet 3D 4.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1959-1972 Chevrolet Brookwood 4.6L 5.0L 5.3L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1986 Chevrolet C30 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC C15 Suburban 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1988-1995 Chevrolet C3500 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1966-1993 Chevrolet Caprice 4.4L 4.6L 5.0L 5.3L 5.4L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1968-1974 Chevrolet K30 Pickup 5.0L 5.3L 5.4L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1959-1972 Chevrolet Kingswood 4.6L 5.0L 5.3L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1996 Chevrolet Express 2500 5.0L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1995 Chevrolet G10 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1986 Chevrolet K10 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1992-1995 Chevrolet K1500 Suburban 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1989-1991 Chevrolet V1500 Suburban 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1989-1991 Chevrolet V3500 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1989-1991 Chevrolet R2500 Suburban 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1977-1987 Buick Regal 4.4L 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1995 AM General Hummer 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1965-1969 Bizzarrini GT America 5.3L 5.4L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1956-1959 Chevrolet 3100Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1973 Chevrolet P10 Van 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1989 Chevrolet R2500 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1989-1991 Chevrolet R3500 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1987-1988 Chevrolet V30 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1979-1995 GMC C2500 Suburban 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1979-1995 GMC C3500 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1977-1978 GMC K35 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1967-1974 GMC K15 K1500 Suburban 4.6L 5.0L 5.3L 5.4L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1983-1986 Pontiac Bonneville 5.0L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1967-1986 Chevrolet C20 Suburban 4.6L 5.0L 5.3L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1960-1974 Chevrolet C30 Pickup 4.6L 5.0L 5.3L 5.4L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1959 Chevrolet 3G 4.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1955-1981 Chevrolet Bel Air 4.3L 4.4L 4.6L 5.0L 5.3L 5.4L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1977-1979 Buick Skylark 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1979-1995 GMC C1500 Suburban 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC C25 Suburban 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1967-1974 GMC C25 C2500 Suburban 4.6L 5.0L 5.3L 5.4L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC C25 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC C35 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC K15 Suburban 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC K25 Suburban 5.0L 5.7L 6.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1987-1991 GMC R3500 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1987 GMC V1500 5.0L 5.7L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1965-1966 Studebaker Commander 4.6L V8Special Price $10.69 Regular Price $14.99
- Fel-Pro Exhaust Manifold Gasket Set for 1965-1966 Studebaker Daytona 4.6L V8Special Price $10.69 Regular Price $14.99