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 Int Pipe To Muffler Assm Exhaust Clamp for 2010-2017 GMC Terrain 3.0L 3.6L V6Special Price $10.70 Regular Price $14.99 -
Fel-Pro Exhaust Manifold Gasket Set for 1975-1978 GMC K15 5.0L 5.7L 6.6L V8Special Price $16.04 Regular Price $22.99 -
MAHLE Exhaust Manifold Gasket Set for 1982-2002 GMC B7 C1500 C2500 C3500 C3500HD G2500 Suburban 6.2L 6.5L V8Special Price $36.22 Regular Price $51.99Out of stock -
Dorman Exhaust Manifold for 2015-2017 GMC Terrain 2.4L L4Special Price $163.35 Regular Price $232.99Out of stock -
Delphi EGR Valve for 1996-2002 GMC Yukon 4.8L 5.3L 5.7L 6.0L V8Special Price $179.95 Regular Price $256.99 -
Walker SoundFX Exhaust Muffler for 1988-1993 GMC K1500 5.7L 6.2L V8Special Price $68.05 Regular Price $96.99 -
Fel-Pro Exhaust Manifold Gasket Set for 1996-2000 GMC C3500 7.4L V8Special Price $30.68 Regular Price $43.99 -
Fel-Pro Exhaust Flange Stud & Nut for 2001-2016 GMC Savana 3500 4.8L 6.0L 8.1L V8Special Price $36.31 Regular Price $51.99 -
Fel-Pro EGR Valve Gasket for 2000-2014 GMC Yukon XL 1500 5.3L 6.0L 6.2L V8Special Price $9.00 Regular Price $12.99 -
Fel-Pro EGR Valve Gasket for 2003-2006 GMC Envoy XL 5.3L V8Special Price $9.18 Regular Price $12.99 -
Fel-Pro EGR Valve Gasket for 1979-1986 GMC C1500 5.0L 5.7L 6.6L V8Special Price $9.54 Regular Price $13.99 -
Walker Y-Pipe Rear To Resonator Assm Left Exhaust Clamp for 2009-2016 GMC Acadia 3.6L V6Special Price $10.24 Regular Price $14.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1981-1985 GMC Jimmy 5.7L V8Special Price $10.32 Regular Price $14.99 -
Walker Right Converter To Muffler Exhaust Clamp for 2006 GMC Sierra 3500 6.0L 8.1L V8Special Price $10.48 Regular Price $14.99 -
Walker Muffler To Muffler Assm Exhaust Clamp for 2002-2005 GMC Envoy XL 4.2L 5.3L L6 V8Special Price $10.48 Regular Price $14.99 -
Walker Front Pipe Left To Int Left Exhaust Clamp for 1987-1991 GMC V2500 Suburban 6.2L V8Special Price $10.52 Regular Price $14.99 -
Walker Int Pipe Rear To Muffler Exhaust Clamp for 1982-1987 GMC P3500 5.7L V8Special Price $10.70 Regular Price $14.99 -
Walker Right Converter To Muffler Exhaust Clamp for 2001-2006 GMC Sierra 2500 HD 6.0L 8.1L V8Special Price $10.70 Regular Price $14.99 -
Walker Right Converter To Y-Pipe Exhaust Pipe Flange Gasket for 2010-2017 GMC Terrain 3.0L 3.6L V6Special Price $11.38 Regular Price $15.99 -
MAHLE Rear Catalytic Converter Gasket for 2011-2016 GMC Terrain 2.4L L4Special Price $11.52 Regular Price $15.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2007-2013 GMC Sierra 1500 4.8L V8Special Price $12.22 Regular Price $16.99 -
Walker Converter Left To Extension Pipe Exhaust Clamp for 2002-2006 GMC Sierra 1500 HD 6.0L V8Special Price $12.32 Regular Price $17.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1960-1965 GMC 2500 Series 5.0L 5.7L V6Special Price $12.39 Regular Price $17.99 -
Walker Exhaust Clamp for 2014-2018 GMC Sierra 1500 4.3L 5.3L V6 V8Special Price $12.43 Regular Price $17.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1967-1974 GMC C25 C2500 Pickup 5.0L 5.7L V6 V8Special Price $12.65 Regular Price $17.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1999-2000 GMC Sierra 2500 6.0L V8Special Price $13.18 Regular Price $18.99 -
Fel-Pro Left Exhaust Pipe Flange Gasket for 2002-2014 GMC Savana 1500 4.3L 5.3L V6 V8Special Price $13.31 Regular Price $18.99 -
Fel-Pro Left Exhaust Pipe Flange Gasket for 2004 GMC Envoy XL 5.3L V8Special Price $13.31 Regular Price $18.99 -
Walker Flex Pipe To Muffler Exhaust Clamp for 2011-2017 GMC Sierra 3500 HD 6.0L V8Special Price $13.41 Regular Price $18.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2001-2006 GMC Sierra 2500 HD 6.0L 8.1L V8Special Price $13.59 Regular Price $18.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2007 GMC Sierra 1500 HD Classic 6.0L V8Special Price $13.59 Regular Price $18.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2000-2013 GMC Yukon XL 2500 6.0L 8.1L V8Special Price $14.02 Regular Price $19.99 -
Walker Tail Pipe Exhaust System Insulator for 1994-1995 GMC K1500 Suburban 5.7L V8Special Price $14.56 Regular Price $20.99Out of stock -
Walker Muffler Exhaust System Insulator for 2003-2010 GMC Savana 3500 4.8L 6.0L V8Special Price $14.56 Regular Price $20.99Out of stock -
Walker Exhaust System Hanger for 1975-1978 GMC G15 4.1L 5.0L 5.7L L6 V8Special Price $14.58 Regular Price $20.99 -
Walker Tail Pipe Left Exhaust System Hanger for 1982-1988 GMC P2500 6.2L V8Special Price $14.58 Regular Price $20.99 -
Walker Extension Pipe Exhaust System Insulator for 2015-2019 GMC Yukon XL 5.3L V8Special Price $14.86 Regular Price $20.99Out of stock -
Walker Muffler Exhaust System Insulator for 1990-1995 GMC C3500 5.7L 6.2L V8Special Price $14.86 Regular Price $20.99Out of stock -
Walker Muffler Exhaust System Insulator for 1996-1999 GMC C2500 Suburban 5.7L V8Special Price $14.86 Regular Price $20.99Out of stock -
Walker Int Pipe Exhaust System Hanger for 1988-1990 GMC S15 2.8L 4.3L V6Special Price $14.88 Regular Price $20.99 -
Walker Int Pipe Rear Exhaust System Hanger for 1982-1987 GMC P3500 5.7L V8Special Price $14.88 Regular Price $20.99 -
Walker Int Pipe Right Exhaust System Hanger for 1979-1988 GMC P3500 6.2L 7.4L V8Special Price $14.88 Regular Price $20.99 -
Fel-Pro Right Exhaust Pipe Flange Gasket for 1999-2014 GMC Savana 1500 4.3L 5.3L V6 V8Special Price $15.06 Regular Price $21.99 -
Fel-Pro Right Exhaust Pipe Flange Gasket for 1999-2016 GMC Savana 2500 4.3L 4.8L 5.3L 6.0L V6 V8Special Price $15.06 Regular Price $21.99 -
Walker Y-Pipe Oxygen Sensor Bung Plug for 1988-1993 GMC C1500 4.3L 5.0L V6 V8Special Price $15.59 Regular Price $21.99




































































