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 Extension Pipe Exhaust System Insulator for 1990-1994 Plymouth Laser 1.8L 2.0L L4Special Price $8.09 Regular Price $11.99
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- Walker Exhaust System Insulator for 1991-1994 GMC G1500 4.3L 5.0L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Converter Right Exhaust System Insulator for 1999-2004 Chevrolet Silverado 2500 6.0L V8Special Price $9.51 Regular Price $13.99
- Walker Int Pipe Exhaust System Insulator for 1991-1996 Chevrolet G30 4.3L 5.7L 7.4L V6 V8Special Price $9.51 Regular Price $13.99
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- Walker Muffler Exhaust System Insulator for 1994-1995 Buick Regal 3.1L V6Special Price $9.51 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 1993-2000 GMC C3500 5.7L 6.5L 7.4L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2003-2005 Chevrolet Express 2500 4.3L 5.3L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991-1995 Chevrolet G10 4.3L 5.0L 5.7L V6 V8Special Price $9.87 Regular Price $13.99
- Walker Extension Pipe Exhaust System Insulator for 2007-2013 Chevrolet Avalanche 5.3L 6.0L V8Special Price $9.87 Regular Price $13.99
- Walker Muffler Assm Exhaust System Insulator for 2009-2010 Kia Optima 2.4L L4Special Price $9.87 Regular Price $13.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1993-1998 Toyota T100 3.0L 3.4L V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2004-2008 Chevrolet Malibu 2.2L 3.5L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2002-2003 Mazda Protege5 2.0L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 1993-1997 Toyota Corolla 1.6L 1.8L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2004-2010 Toyota Sienna 3.3L 3.5L V6Special Price $11.30 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 1993-2012 Hyundai Elantra 1.8L 2.0L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2009-2012 Ford Escape 2.5L 3.0L L4 V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Exhaust System Insulators for 1994 Dodge B350 5.2L 5.9L V8Special Price $16.44 Regular Price $22.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2009-2014 Acura TSX 2.4L L4Special Price $16.44 Regular Price $22.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 1994-1997 Oldsmobile Cutlass Supreme 3.1L V6Special Price $16.44 Regular Price $22.99