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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- 4 pc Walker Muffler Assm Exhaust System Insulators for 2005-2017 Toyota Tacoma 2.7L L4Special Price $23.37 Regular Price $32.99
- 4 pc Walker Muffler Assm Exhaust System Insulators for 1995-1997 Subaru Legacy 2.2L 2.5L H4Special Price $23.37 Regular Price $32.99
- 3 pc Walker Muffler Assm Exhaust System Insulators for 2010-2017 GMC Terrain 2.4L L4Special Price $25.12 Regular Price $35.99
- 4 pc Walker Muffler Assm Exhaust System Insulators for 2009-2015 Toyota Venza 3.5L V6Special Price $33.80 Regular Price $47.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1980-1985 Oldsmobile Cutlass Salon 5.7L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1981-1984 Pontiac Bonneville 5.7L V8Special Price $3.99 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1980-1985 Chevrolet C30 4.8L L6Special Price $4.23 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1979-1983 GMC P2500 4.8L L6Special Price $4.23 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1982-1984 Chevrolet Monte Carlo 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1981 Buick Century 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1982-1983 Chevrolet Malibu 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1980-1985 Oldsmobile Cutlass Supreme 5.7L V8Special Price $4.25 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1980-1985 GMC C2500 4.8L L6Special Price $4.49 Regular Price $5.99
- Walker Front Pipe To Int Pipe Exhaust Clamp for 1980-1985 GMC C3500 4.8L L6Special Price $4.49 Regular Price $5.99