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 Quiet-Flow Right Exhaust Muffler for 1967-1981 Pontiac Firebird 3.8L 4.1L 4.9L 5.0L 5.3L 5.7L 6.6L L6 V8Special Price $63.46 Regular Price $90.99
- Walker Quiet-Flow Left Exhaust Muffler for 1977-1981 Chevrolet Camaro 5.0L 5.7L V8Special Price $63.46 Regular Price $90.99
- Walker Quiet-Flow Right Exhaust Muffler for 1977-1981 Chevrolet Camaro 5.0L 5.7L V8Special Price $63.46 Regular Price $90.99
- Walker Quiet-Flow Left Exhaust Muffler for 1967-1981 Pontiac Firebird 3.8L 4.1L 4.9L 5.0L 5.3L 5.7L 6.6L L6 V8Special Price $64.76 Regular Price $92.99
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- Walker Quiet-Flow Exhaust Muffler for 2010-2015 GMC Terrain 3.0L 3.6L V6Special Price $69.87 Regular Price $99.99
- Walker Quiet-Flow Exhaust Muffler for 2010-2015 Chevrolet Equinox 3.0L 3.6L V6Special Price $69.87 Regular Price $99.99
- Walker Quiet-Flow Exhaust Muffler for 1984-1987 Honda Civic 1.3L 1.5L L4Special Price $71.26 Regular Price $101.99
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- Walker Quiet-Flow Exhaust Muffler for 1963 Chevrolet C10 Pickup 3.8L 4.6L L6 V8Special Price $89.60 Regular Price $127.99
- Walker Quiet-Flow Exhaust Muffler for 1958-1964 Chevrolet Biscayne 3.8L 3.9L 4.6L 5.3L 5.7L 6.7L L6 V8Special Price $89.60 Regular Price $127.99
- Walker Quiet-Flow Exhaust Muffler for 1959-1960 Chevrolet El Camino 4.6L 5.7L V8Special Price $89.60 Regular Price $127.99
- Walker Quiet-Flow Exhaust Muffler for 1955-1964 Chevrolet Bel Air 3.8L 3.9L 4.3L 4.6L 5.3L 5.7L 6.7L 7.0L L6 V8Special Price $89.60 Regular Price $127.99
- Walker Quiet-Flow Exhaust Muffler for 1958-1964 Chevrolet Impala 3.8L 4.6L 5.3L 5.4L 5.7L 6.7L 7.0L L6 V8Special Price $91.43 Regular Price $130.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1991 GMC G1500 5.7L V8Special Price $96.84 Regular Price $137.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1991 Chevrolet G10 5.7L V8Special Price $96.84 Regular Price $137.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1991 GMC G3500 4.3L 5.7L V6 V8Special Price $96.84 Regular Price $137.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1991 Chevrolet Blazer 5.7L V8Special Price $96.84 Regular Price $137.99
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- Walker Quiet-Flow Exhaust Muffler for 1985-1990 Chevrolet Celebrity 2.8L 3.1L V6Special Price $99.69 Regular Price $141.99
- Walker Quiet-Flow Exhaust Muffler for 1977-1978 Pontiac Grand Safari 6.6L V8Special Price $99.69 Regular Price $141.99
- Walker Quiet-Flow Exhaust Muffler for 1977-1987 Cadillac DeVille 4.1L 6.0L 7.0L V8Special Price $99.69 Regular Price $141.99
- Walker Quiet-Flow Exhaust Muffler for 1982-1984 Chevrolet Impala 5.7L V8Special Price $99.69 Regular Price $141.99
- Walker Quiet-Flow Exhaust Muffler for 1984-1995 Buick Century 2.2L 2.8L 3.1L 3.3L 3.8L L4 V6Special Price $99.69 Regular Price $141.99
- Walker Quiet-Flow Exhaust Muffler for 1993-1997 Pontiac Firebird 3.4L 3.8L V6Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1981 Pontiac Laurentian 5.0L V8Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1977-1990 Oldsmobile Custom Cruiser 5.0L 5.7L 6.6L V8Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1977-1991 Buick LeSabre 3.0L 3.8L 5.0L 5.7L 6.6L V6 V8Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1977-1978 Buick Riviera 6.6L V8Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1984-1995 Oldsmobile Cutlass Ciera 2.2L 3.1L 3.3L 3.8L L4 V6Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1990 Cadillac Brougham 5.0L V8Special Price $101.73 Regular Price $144.99
- Walker Quiet-Flow Exhaust Muffler for 1987-1994 Oldsmobile Cutlass Cruiser 2.8L 3.1L 3.3L 3.8L V6Special Price $101.73 Regular Price $144.99
- 2 pc Walker Quiet-Flow Exhaust Mufflers for 1978-1979 Pontiac Firebird 6.6L V8Special Price $114.81 Regular Price $163.99
