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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- 2 pc Walker Muffler Exhaust System Insulators for 1997-2001 Toyota Camry 2.2L 3.0L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2000-2004 Toyota Avalon 3.0L V6Special Price $11.30 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2007-2012 Nissan Sentra 2.0L L4Special Price $11.30 Regular Price $15.99
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- 2 pc Walker Muffler Exhaust System Insulators for 2009-2016 Ford E-350 Super Duty 5.4L V8Special Price $16.95 Regular Price $23.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2005-2009 Chevrolet Equinox 3.4L V6Special Price $20.51 Regular Price $28.99
- 3 pc Walker Muffler Exhaust System Insulators for 1990-1994 Eagle Talon 2.0L L4Special Price $25.80 Regular Price $36.99
- 4 pc Walker Muffler Exhaust System Insulators for 1989-1992 Ford Probe 2.2L 3.0L L4 V6Special Price $34.66 Regular Price $49.99
- Walker Muffler Exhaust System Insulator for 1995-1997 Honda Accord 2.7L V6Special Price $4.11 Regular Price $5.99
- Walker Muffler Exhaust System Insulator for 1992-1996 Honda Prelude 2.2L 2.3L L4Special Price $4.11 Regular Price $5.99
- Walker Muffler Exhaust System Insulator for 1990-1994 Mitsubishi Eclipse 1.8L 2.0L L4Special Price $4.99 Regular Price $6.99
- Walker Resonator Assm Exhaust System Insulator for 2005-2009 Subaru Legacy 2.5L H4Special Price $4.99 Regular Price $6.99