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.
Filter By Part Details
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2003-2019 Toyota Corolla 1.8L L4Special Price $11.30 Regular Price $15.99
- Walker Front Pipe Exhaust System Insulator for 2009-2014 Acura TSX 2.4L L4Special Price $6.86 Regular Price $9.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2001-2016 Kia Optima 2.4L 2.5L 2.7L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Y-Pipe Exhaust System Insulators for 2000-2005 Chevrolet Monte Carlo 3.8L V6Special Price $16.95 Regular Price $23.99
- 2 pc Walker Exhaust System Insulators for 1995-2010 Dodge Ram 2500 5.2L 5.9L 6.7L L6 V8Special Price $16.95 Regular Price $23.99
- 3 pc Walker Exhaust System Insulators for 2010-2013 Toyota Tundra 4.6L 5.7L V8Special Price $17.33 Regular Price $24.99
- Walker Converter Exhaust System Insulator for 2005-2017 Toyota Tacoma 2.7L L4Special Price $4.99 Regular Price $6.99
- Walker Exhaust System Insulator for 2015-2019 Chevrolet Trax 1.4L L4Special Price $5.26 Regular Price $7.99
- Walker Exhaust System Insulator for 1999-2002 Mazda Miata 1.8L L4Special Price $5.26 Regular Price $7.99
- Walker Rear Muffler Exhaust System Insulator for 2000-2004 Dodge Intrepid 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Tail Pipe Front Exhaust System Insulator for 2007-2010 Ford Explorer Sport Trac 4.0L V6Special Price $8.09 Regular Price $11.99
- Walker Extension Pipe Exhaust System Insulator for 1994-1995 Chevrolet C1500 4.3L 5.0L 5.7L 6.5L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Tail Pipe Exhaust System Insulator for 1991 GMC R3500 5.7L V8Special Price $9.51 Regular Price $13.99
- Walker H-Pipe Exhaust System Insulator for 1996-1999 GMC K1500 5.7L V8Special Price $9.87 Regular Price $13.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 2004-2006 Lexus ES330 3.3L V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Resonator Assm Exhaust System Insulators for 2000-2005 Toyota Celica 1.8L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2000-2013 Chevrolet Impala 3.4L 3.6L 3.8L 3.9L 5.3L V6 V8Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Assm Exhaust System Insulators for 1994-1999 Volkswagen Jetta 2.8L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Assm Left Exhaust System Insulators for 2014-2016 Chevrolet Impala Limited 3.6L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Exhaust System Insulators for 1996-2000 Plymouth Voyager 3.0L 3.3L 3.8L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Muffler Exhaust System Insulators for 2004-2011 Ford Ranger 2.3L L4Special Price $16.95 Regular Price $23.99