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
-
Fel-Pro Exhaust Flange Stud & Nut for 2003-2004 GMC Sonoma 4.3L V6Special Price $37.05 Regular Price $52.99 -
Fel-Pro EGR Valve Gasket for 1991-1995 GMC Sonoma 2.5L 4.3L L4 V6Special Price $9.17 Regular Price $12.99 -
Walker Int Pipe Exhaust Clamp for 1991 GMC Sonoma 2.8L 4.3L V6Special Price $9.21 Regular Price $12.99Out of stock -
Walker Muffler Assm To Tail Pipe Exhaust Clamp for 1992-1994 GMC Sonoma 4.3L V6Special Price $9.21 Regular Price $12.99Out of stock -
Walker Muffler To Tail Pipe Exhaust Clamp for 1992-1994 GMC Sonoma 2.8L 4.3L V6Special Price $9.40 Regular Price $12.99Out of stock -
Walker Front Pipe To Converter Exhaust Clamp for 1994-1995 GMC Sonoma 2.2L L4Special Price $9.44 Regular Price $12.99Out of stock -
Walker Tail Pipe Exhaust Clamp for 1991 GMC Sonoma 2.5L 2.8L 4.3L L4 V6Special Price $9.44 Regular Price $12.99Out of stock -
Walker Muffler Assm To Tail Pipe Exhaust Clamp for 1991 GMC Sonoma 2.8L V6Special Price $9.44 Regular Price $12.99Out of stock -
Walker Muffler To Tail Pipe Exhaust Clamp for 1991-1994 GMC Sonoma 2.2L 2.5L 4.3L L4 V6Special Price $9.64 Regular Price $13.99Out of stock -
Walker Exhaust Clamp for 1992-1993 GMC Sonoma 2.5L L4Special Price $9.64 Regular Price $13.99Out of stock -
Fel-Pro EGR Valve Gasket for 1995-2004 GMC Sonoma 2.2L 4.3L L4 V6Special Price $9.73 Regular Price $13.99 -
Walker Exhaust Pipe Flange Gasket for 1996-1997 GMC Sonoma 2.2L L4Special Price $9.98 Regular Price $13.99Out of stock -
Fel-Pro EGR Valve Gasket for 1991-1995 GMC Sonoma 2.2L 2.8L L4 V6Special Price $10.03 Regular Price $13.99 -
Walker Front Pipe To Converter Exhaust Clamp for 1991 GMC Sonoma 2.5L L4Special Price $10.30 Regular Price $14.99 -
Walker Muffler Assm To Tail Pipe Exhaust Clamp for 1998-2003 GMC Sonoma 4.3L V6Special Price $10.30 Regular Price $14.99 -
Walker Int Pipe To Muffler Exhaust Clamp for 1991-1995 GMC Sonoma 2.2L 2.5L 2.8L 4.3L L4 V6Special Price $10.30 Regular Price $14.99 -
Walker Y-Pipe To Converter Exhaust Clamp for 1991-1994 GMC Sonoma 2.8L 4.3L V6Special Price $10.48 Regular Price $14.99 -
Walker Int Pipe To Muffler Exhaust Clamp for 1992-2003 GMC Sonoma 2.8L 4.3L V6Special Price $10.48 Regular Price $14.99 -
Walker Muffler To Tail Pipe Exhaust Clamp for 1995-2003 GMC Sonoma 2.2L 4.3L L4 V6Special Price $10.52 Regular Price $14.99 -
Walker Exhaust Clamp for 1992-2003 GMC Sonoma 2.2L 2.5L 4.3L L4 V6Special Price $10.52 Regular Price $14.99 -
Walker Exhaust Pipe Flange Gasket for 1996-2003 GMC Sonoma 2.2L L4Special Price $11.47 Regular Price $15.99Out of stock -
Fel-Pro Exhaust Manifold Gasket Set for 1991-1993 GMC Sonoma 2.5L L4Special Price $12.38 Regular Price $17.99 -
Walker Y-Pipe To Converter Exhaust Pipe Flange Gasket for 1996-1999 GMC Sonoma 4.3L V6Special Price $12.70 Regular Price $17.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1996-1997 GMC Sonoma 4.3L V6Special Price $12.96 Regular Price $18.99Out of stock -
Walker Tail Pipe Exhaust Bracket for 1991 GMC Sonoma 2.5L 2.8L 4.3L L4 V6Special Price $13.59 Regular Price $18.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1998-2000 GMC Sonoma 2.2L L4Special Price $13.62 Regular Price $18.99Out of stock -
Walker Int Pipe Exhaust System Hanger for 1991 GMC Sonoma 2.8L 4.3L V6Special Price $14.58 Regular Price $20.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1991-1993 GMC Sonoma 2.8L V6Special Price $16.42 Regular Price $22.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1996-2004 GMC Sonoma 4.3L V6Special Price $16.42 Regular Price $22.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1994-1995 GMC Sonoma 2.2L L4Special Price $16.42 Regular Price $22.99 -
Walker Converter To Int Pipe Exhaust Pipe Flange Gasket for 2000-2003 GMC Sonoma 4.3L V6Special Price $16.48 Regular Price $23.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1995-1997 GMC Sonoma 4.3L V6Special Price $16.49 Regular Price $23.99 -
Walker Converter To Int Pipe Exhaust Pipe Flange Gasket for 1996-1999 GMC Sonoma 4.3L V6Special Price $16.83 Regular Price $23.99 -
Fel-Pro Exhaust Manifold Gasket Set for 1991-1995 GMC Sonoma 4.3L V6Special Price $17.60 Regular Price $24.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1991-1995 GMC Sonoma 4.3L V6Special Price $18.52 Regular Price $25.99 -
Fel-Pro Exhaust Manifold Gasket Set for 1992-2004 GMC Sonoma 4.3L V6Special Price $23.79 Regular Price $33.99 -
2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991-1994 GMC Sonoma 4.3L V6Special Price $31.54 Regular Price $44.99Out of stock -
2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1991-1994 GMC Sonoma 4.3L V6Special Price $32.11 Regular Price $45.99 -
Walker SoundFX Exhaust Muffler for 1995-2003 GMC Sonoma 4.3L V6Special Price $64.54 Regular Price $91.99 -
Walker SoundFX Exhaust Muffler for 1991-1994 GMC Sonoma 2.2L 2.5L 2.8L 4.3L L4 V6Special Price $69.21 Regular Price $98.99 -
Walker SoundFX Exhaust Muffler for 1992-1995 GMC Sonoma 2.8L 4.3L V6Special Price $72.69 Regular Price $103.99





























































