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 Int Pipe Exhaust System Insulators for 2004-2008 Chevrolet Malibu 2.2L 3.5L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1986-1988 Nissan Stanza 2.0L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1991-1995 Hyundai Scoupe 1.5L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1987-1988 Plymouth Colt 1.5L 1.6L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1994 Mitsubishi Eclipse 2.0L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2010-2016 Cadillac SRX 3.0L 3.6L V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2005-2007 Pontiac G6 2.4L 3.5L L4 V6Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1994 Eagle Talon 2.0L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1987-1990 Toyota Tercel 1.5L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1994 Plymouth Laser 2.0L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1995-2000 Toyota Tacoma 2.7L 3.4L L4 V6Special Price $11.30 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2007 Saturn Aura 3.5L V6Special Price $11.30 Regular Price $15.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1987-1988 Mitsubishi Mirage 1.5L 1.6L 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 Int Pipe Exhaust System Insulators for 2006-2008 Hyundai Sonata 3.3L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2010-2016 Toyota Prius 1.8L L4Special Price $16.44 Regular Price $22.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2014-2016 Chevrolet Impala Limited 3.6L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1997-2002 Buick Regal 3.8L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2000-2006 Chevrolet Monte Carlo 3.4L 3.9L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1995-2000 Mitsubishi Montero 3.0L 3.5L V6Special Price $16.44 Regular Price $22.99
- 3 pc Walker Int Pipe Exhaust System Insulators for 1989-1992 Plymouth Colt 1.5L L4Special Price $16.82 Regular Price $23.99
- 3 pc Walker Int Pipe Exhaust System Insulators for 1989-1992 Mitsubishi Mirage 1.5L L4Special Price $16.82 Regular Price $23.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2007-2011 Jeep Wrangler 3.8L V6Special Price $16.95 Regular Price $23.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1998-2002 Dodge Ram 3500 5.9L V8Special Price $16.95 Regular Price $23.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1998-2001 Dodge Ram 1500 3.9L 5.2L 5.9L V6 V8Special Price $16.95 Regular Price $23.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1998-2002 Dodge Ram 2500 5.9L V8Special Price $16.95 Regular Price $23.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2006-2010 Hyundai Azera 3.3L 3.8L V6Special Price $16.95 Regular Price $23.99
- 3 pc Walker Int Pipe Exhaust System Insulators for 1989-1992 Eagle Summit 1.5L L4Special Price $17.33 Regular Price $24.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1995 GMC K3500 5.7L 6.2L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1995 GMC C3500 5.7L 6.2L 6.5L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1995 Chevrolet K3500 5.7L 6.2L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Int Pipe Exhaust System Hangers for 1980-1986 GMC C1500 4.1L 5.0L 5.7L L6 V8Special Price $20.48 Regular Price $28.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 2006-2007 Ford E-350 Super Duty 5.4L V8Special Price $20.51 Regular Price $28.99
- 2 pc Walker Int Pipe Exhaust System Insulators for 1990-1995 Chevrolet C3500 5.7L 6.2L 6.5L V8Special Price $20.51 Regular Price $28.99