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 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
- Walker Converter Rear Exhaust System Insulator for 2006-2011 Honda Civic 1.3L L4Special Price $5.26 Regular Price $7.99
- Walker Converter Rear Exhaust System Insulator for 2004-2006 Lexus RX330 3.3L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2006-2008 Lexus RX400h 3.3L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2001-2008 Ford Escape 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Rear Exhaust System Insulator for 2015-2017 Hyundai Sonata 2.4L L4Special Price $5.26 Regular Price $7.99
- Walker Converter Rear Exhaust System Insulator for 2005-2008 Mercury Mariner 3.0L V6Special Price $5.26 Regular Price $7.99
- Walker Converter Rear Exhaust System Insulator for 2009-2017 Buick Enclave 3.6L V6Special Price $7.76 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2015 Toyota Venza 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2010 Saturn Outlook 3.6L V6Special Price $7.76 Regular Price $10.99
- Walker Converter Rear Exhaust System Insulator for 2009-2017 Chevrolet Traverse 3.6L V6Special Price $8.09 Regular Price $11.99
- Walker Converter Rear Exhaust System Insulator for 2010-2017 GMC Terrain 2.4L L4Special Price $8.09 Regular Price $11.99
- Walker Converter Rear Exhaust System Insulator for 2010-2017 Chevrolet Equinox 2.4L L4Special Price $8.09 Regular Price $11.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2009-2010 Pontiac Vibe 2.4L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2013-2018 Buick Encore 1.4L L4Special Price $10.91 Regular Price $15.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2000-2005 Mitsubishi Eclipse 3.0L V6Special Price $16.44 Regular Price $22.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2003-2009 Ford Focus 2.0L 2.3L L4Special Price $16.95 Regular Price $23.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2010-2015 Lexus RX350 3.5L V6Special Price $16.95 Regular Price $23.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2008-2015 Scion xB 2.4L L4Special Price $16.95 Regular Price $23.99
- 2 pc Walker Converter Rear Exhaust System Insulators for 2002-2005 Hyundai XG350 3.5L V6Special Price $16.95 Regular Price $23.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 GMC K3500 5.7L 6.2L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 Chevrolet K2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1994 Chevrolet Blazer 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 GMC R3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1990 GMC S15 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 GMC V3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991 Chevrolet R3500 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1995 Chevrolet C2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1993 GMC K1500 Suburban 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1993 Chevrolet K1500 Suburban 5.7L V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1991-1994 Oldsmobile Bravada 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1992-1994 GMC Jimmy 4.3L V6Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Bolt & Springs for 1988-1993 Chevrolet C1500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.06 Regular Price $45.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 GMC C1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 GMC K2500 4.3L 5.0L 5.7L 6.2L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1994 Chevrolet S10 4.3L V6Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1996 GMC G3500 4.3L 5.7L V6 V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1988-1995 Chevrolet K3500 5.7L 6.2L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1993 Chevrolet C1500 Suburban 5.7L V8Special Price $32.66 Regular Price $46.99
- 2 pc Walker Y-Pipe Inlets Exhaust Pipe Flange Gaskets for 1992-1994 GMC Jimmy 4.3L V6Special Price $32.66 Regular Price $46.99