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 Resonator Assm To Muffler Assm Exhaust Bolt & Spring for 1988-1991 Honda CRX 1.5L 1.6L L4Special Price $12.75 Regular Price $17.99
- Walker Front Pipe To Converter Exhaust Bolt & Spring for 1993-1995 Honda Civic del Sol 1.5L 1.6L L4Special Price $12.75 Regular Price $17.99
- Walker Front Pipe To Converter Exhaust Bolt & Spring for 1996-1999 Isuzu Oasis 2.2L 2.3L L4Special Price $12.75 Regular Price $17.99
- Walker Converter To Resonator Assm Exhaust Bolt & Spring for 2005 Subaru Legacy 2.5L H4Special Price $12.75 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2016 Subaru Crosstrek 2.0L H4Special Price $12.75 Regular Price $17.99
- Walker Int Pipe To Muffler Assm Exhaust Bolt & Spring for 1988-1991 Honda Civic 1.5L 1.6L L4Special Price $12.75 Regular Price $17.99
- Walker Front Pipe To Converter Exhaust Bolt & Spring for 1988-2001 Acura Integra 1.6L 1.7L 1.8L L4Special Price $12.75 Regular Price $17.99
- Walker Converter To Resonator Assm Exhaust Bolt & Spring for 1984-1987 Honda Civic 1.5L L4Special Price $12.75 Regular Price $17.99
- Walker Exhaust Bolt & Spring for 1979-1980 Cadillac DeVille 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1981 Pontiac Bonneville 4.9L 5.0L 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1990-1996 GMC P3500 7.4L V8Special Price $14.64 Regular Price $20.99
- Walker Converter Inlet Exhaust Bolt & Spring for 1994 Chevrolet Corsica 3.1L V6Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1985 Oldsmobile Cutlass Salon 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1987 Buick Regal 5.0L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1990-1996 Chevrolet P30 7.4L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1977 Buick Skylark 4.3L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1977 Pontiac Ventura 4.3L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1983-1984 GMC Caballero 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1990 Oldsmobile Custom Cruiser 5.0L 5.7L 6.6L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe To Extension Pipe Exhaust Bolt & Spring for 1976 Oldsmobile Cutlass Tiara 5.7L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1976-1988 Oldsmobile Cutlass Supreme 4.3L 5.0L 5.7L 6.6L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977 Buick Century 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1979-1986 Cadillac Fleetwood 5.0L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Converter Inlet Exhaust Bolt & Spring for 1994 Chevrolet Beretta 3.1L V6Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1981-1984 Pontiac Bonneville 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1989 Buick Electra 5.0L 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1983 Oldsmobile Cutlass Cruiser 5.7L V8Special Price $14.64 Regular Price $20.99
- 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 Exhaust Bolt & Spring for 1977-1978 Buick Riviera 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1980 Chevrolet Impala 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1978 Pontiac Grand Safari 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1975-1984 Oldsmobile 98 5.0L 5.7L 6.6L 7.5L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1983-1984 Chevrolet El Camino 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1980-1986 Pontiac Parisienne 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1990 Buick LeSabre 3.8L 5.0L 5.7L 6.6L V6 V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977 Pontiac LeMans 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1981 Pontiac Catalina 3.8L 5.0L 5.7L 6.6L V6 V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1984 Oldsmobile Cutlass Calais 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 Exhaust Bolt & Spring for 1980-1990 Chevrolet Caprice 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1979-1984 Oldsmobile Cutlass Calais 4.3L 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1985 Oldsmobile Cutlass Supreme 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977 Pontiac Phoenix 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe To Extension Pipe Exhaust Bolt & Spring for 1975-1977 Oldsmobile Cutlass 5.7L 7.5L 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
- Walker Exhaust Bolt & Spring for 1976-1987 Oldsmobile Cutlass Salon 4.3L 5.0L 5.7L 6.6L 7.5L V8Special Price $15.11 Regular Price $21.99