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 Resonator Assm To Muffler Assm Exhaust Pipe Flange Gasket for 1995-2004 Subaru Legacy 2.2L 2.5L H4Special Price $11.98 Regular Price $16.99Out of stock -
Fel-Pro Exhaust Pipe Flange Gasket for 1990-2015 Subaru Legacy 2.2L 2.5L H4Special Price $14.14 Regular Price $19.99 -
2 pc Walker Front Pipe Inlet Exhaust Pipe Flange Gaskets for 1995-2005 Subaru Legacy 2.2L 2.5L H4Special Price $16.71 Regular Price $23.99 -
Fel-Pro Exhaust Manifold Gasket Set for 1990-2015 Subaru Legacy 2.2L 2.5L H4Special Price $20.72 Regular Price $29.99 -
Walker Resonator Assm To Int Pipe Exhaust Clamp for 2010-2012 Subaru Legacy 2.5L H4Special Price $9.21 Regular Price $12.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 2010-2015 Subaru Legacy 3.6L H6Special Price $9.38 Regular Price $12.99Out of stock -
Walker Resonator To Int Pipe Exhaust Clamp for 2013-2017 Subaru Legacy 2.5L H4Special Price $9.40 Regular Price $12.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1996-1999 Subaru Legacy 2.2L 2.5L H4Special Price $9.81 Regular Price $13.99 -
Walker Front Pipe To Converter Front Exhaust Pipe Flange Gasket for 1995-1997 Subaru Legacy 2.2L 2.5L H4Special Price $9.81 Regular Price $13.99 -
Walker Front Pipe To Converter Exhaust Pipe Flange Gasket for 2000-2005 Subaru Legacy 2.5L H4Special Price $10.01 Regular Price $13.99 -
Walker Front Converter To Rear Converter Exhaust Pipe Flange Gasket for 1995-1997 Subaru Legacy 2.2L 2.5L H4Special Price $10.01 Regular Price $13.99 -
Fel-Pro EGR Valve Gasket for 2002-2016 Subaru Legacy 2.5L 3.0L 3.6L H4 H6Special Price $10.20 Regular Price $14.99 -
Walker Exhaust Pipe Flange Gasket for 2010-2015 Subaru Legacy 3.6L H6Special Price $11.28 Regular Price $15.99Out of stock -
Fel-Pro Exhaust Pipe Flange Gasket for 1990-1995 Subaru Legacy 2.2L H4Special Price $11.64 Regular Price $16.99 -
Walker Front Converter To Rear Converter Exhaust Pipe Flange Gasket for 2013-2017 Subaru Legacy 2.5L H4Special Price $11.70 Regular Price $16.99Out of stock -
Walker Resonator Assm Exhaust System Insulator for 2005-2009 Subaru Legacy 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Muffler Assm Exhaust System Insulator for 2004 Subaru Legacy 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Muffler Assm Right Exhaust System Insulator for 2005 Subaru Legacy 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Int Pipe Exhaust System Insulator for 2010-2017 Subaru Legacy 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Exhaust System Insulator for 1996-1999 Subaru Legacy 2.2L 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Muffler Assm Left Exhaust System Insulator for 2005 Subaru Legacy 2.5L H4Special Price $11.72 Regular Price $16.99 -
Walker Int Pipe To Muffler Exhaust Pipe Flange Gasket for 2010-2017 Subaru Legacy 2.5L H4Special Price $11.98 Regular Price $16.99Out of stock -
Walker Resonator Assm To Muffler Right Exhaust Pipe Flange Gasket for 2005 Subaru Legacy 2.5L H4Special Price $11.98 Regular Price $16.99Out of stock -
Walker Resonator Assm To Right Muffler Assm Exhaust Pipe Flange Gasket for 2005-2009 Subaru Legacy 2.5L H4Special Price $11.98 Regular Price $16.99Out of stock -
Walker Converter Inlet Front Exhaust Pipe Flange Gasket for 2009 Subaru Legacy 2.5L H4Special Price $12.11 Regular Price $16.99 -
Walker Resonator Assm To Left Muffler Assm Exhaust Pipe Flange Gasket for 2005-2009 Subaru Legacy 2.5L H4Special Price $12.23 Regular Price $16.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1990-1999 Subaru Legacy 2.2L 2.5L H4Special Price $12.23 Regular Price $16.99Out of stock -
Walker Resonator Assm To Muffler Left Exhaust Pipe Flange Gasket for 2005 Subaru Legacy 2.5L H4Special Price $12.23 Regular Price $16.99Out of stock -
Fel-Pro Front Exhaust Pipe Flange Gasket for 2013-2015 Subaru Legacy 2.5L H4Special Price $13.85 Regular Price $19.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2006-2012 Subaru Legacy 2.5L H4Special Price $14.14 Regular Price $19.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2005-2012 Subaru Legacy 2.5L H4Special Price $15.02 Regular Price $20.99 -
Fel-Pro Rear Exhaust Pipe Flange Gasket for 2005-2012 Subaru Legacy 2.5L H4Special Price $15.55 Regular Price $21.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2005-2012 Subaru Legacy 2.5L H4Special Price $15.76 Regular Price $22.99 -
Walker Rear Converter To Resonator Exhaust Pipe Flange Gasket for 2010-2017 Subaru Legacy 2.5L H4Special Price $15.80 Regular Price $22.99Out of stock -
Walker Left Converter To Resonator Assm Exhaust Pipe Flange Gasket for 2004-2005 Subaru Legacy 2.5L H4Special Price $15.80 Regular Price $22.99Out of stock -
2 pc Walker Exhaust System Insulators for 1996-1999 Subaru Legacy 2.2L H4Special Price $15.92 Regular Price $22.99 -
2 pc Walker Muffler Right Exhaust System Insulators for 2005 Subaru Legacy 2.5L H4Special Price $15.92 Regular Price $22.99 -
2 pc Walker Muffler Assm Right Exhaust System Insulators for 2006-2009 Subaru Legacy 2.5L H4Special Price $15.92 Regular Price $22.99 -
2 pc Walker Muffler Left Exhaust System Insulators for 2005-2008 Subaru Legacy 2.5L H4Special Price $15.92 Regular Price $22.99 -
2 pc Walker Muffler Assm Left Exhaust System Insulators for 2009 Subaru Legacy 2.5L H4Special Price $15.92 Regular Price $22.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1990-1995 Subaru Legacy 2.2L H4Special Price $16.08 Regular Price $22.99 -
Walker Rear Converter To Resonator Assm Exhaust Pipe Flange Gasket for 2006-2009 Subaru Legacy 2.5L H4Special Price $16.13 Regular Price $22.99Out of stock -
Walker Rear Converter To Resonator Assm Exhaust Bolt & Spring for 2006-2009 Subaru Legacy 2.5L H4Special Price $16.41 Regular Price $22.99Out of stock -
Fel-Pro Exhaust Pipe Flange Gasket for 2013-2015 Subaru Legacy 2.5L H4Special Price $16.54 Regular Price $23.99 -
2 pc Walker Exhaust Pipe Flange Gaskets for 1990-1999 Subaru Legacy 2.2L 2.5L H4Special Price $16.71 Regular Price $23.99 -
2 pc Walker Converter Inlet Front Exhaust Pipe Flange Gaskets for 2006-2017 Subaru Legacy 2.5L H4Special Price $16.71 Regular Price $23.99 -
Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2010-2017 Subaru Legacy 2.5L H4Special Price $16.75 Regular Price $23.99Out of stock

































































