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 Y-Pipe To Muffler Exhaust Clamp for 1976-1978 Dodge B300 6.6L 7.2L V8Special Price $4.49 Regular Price $5.99
- Walker Converter Exhaust System Insulator for 1994-1995 Chevrolet C1500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2009-2014 Ford E-250 5.4L V8Special Price $9.87 Regular Price $13.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1969-1974 Ford E-300 Econoline 5.0L V8Special Price $3.71 Regular Price $4.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1972-1974 Jeep CJ6 5.0L V8Special Price $3.71 Regular Price $4.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1991 Ford Thunderbird 3.8L V6Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1966-1974 Ford Bronco 4.7L 5.0L V8Special Price $3.96 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1967-1970 Mercury Marauder 6.4L 7.0L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1976-1978 Dodge CB300 6.6L 7.2L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1972-1973 Mercury Montego 5.8L 6.6L V8Special Price $4.25 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1967-1974 Mercury Monterey 6.4L 6.6L 7.0L 7.5L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1967-1968 Mercury Commuter 6.4L 7.0L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1976-1978 Dodge B200 6.6L 7.2L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1976-1978 Plymouth PB200 6.6L 7.2L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1967-1973 Ford Galaxie 500 4.7L 5.0L 5.8L 6.4L 6.6L 7.0L V8Special Price $4.49 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1967-1973 Ford Custom 500 4.7L 5.0L 5.8L 6.4L 6.6L 7.0L V8Special Price $4.49 Regular Price $5.99
- Walker Converter Exhaust System Insulator for 2001-2004 Mazda Tribute 3.0L V6Special Price $4.99 Regular Price $6.99
- Walker Converter Exhaust System Insulator for 2005-2017 Toyota Tacoma 2.7L L4Special Price $4.99 Regular Price $6.99
- Walker Converter Exhaust System Insulator for 2004-2007 Toyota Highlander 2.4L L4Special Price $5.26 Regular Price $7.99
- 2 pc Walker Y-Pipe To Muffler Exhaust Clamps for 2010-2011 Buick LaCrosse 3.0L 3.6L V6Special Price $8.69 Regular Price $11.99
- 2 pc Walker Y-Pipe To Muffler Exhaust Clamps for 2014-2015 Chevrolet Impala 2.5L L4Special Price $8.69 Regular Price $11.99
- Walker Converter Exhaust System Insulator for 1999-2000 GMC K2500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2001-2006 GMC Sierra 2500 HD 6.6L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 1999-2000 GMC C2500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2009-2014 Ford E-150 5.4L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2003-2005 GMC Savana 2500 4.3L 5.3L V6 V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 1994-1995 GMC C1500 6.5L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2009-2016 Ford E-350 Super Duty 5.4L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 2007 GMC Sierra 2500 HD Classic 6.6L V8Special Price $9.51 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 1998-2000 Chevrolet K3500 6.5L V8Special Price $9.87 Regular Price $13.99
- Walker Converter Exhaust System Insulator for 1998-2000 GMC K3500 6.5L V8Special Price $9.87 Regular Price $13.99