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 1967-1970 Mercury Marauder 6.4L 7.0L V8Special Price $4.23 Regular Price $5.99
- Walker Muffler Left Exhaust System Insulator for 2009-2013 Subaru Forester 2.5L H4Special Price $5.26 Regular Price $7.99
- 3 pc Walker Muffler Left Exhaust System Insulators for 2009-2010 Dodge Journey 3.5L V6Special Price $25.80 Regular Price $36.99
- 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 1976-1978 Dodge CB300 6.6L 7.2L V8Special Price $4.23 Regular Price $5.99
- Walker Y-Pipe To Muffler Exhaust Clamp for 1973 Mercury Monterey 5.8L V8Special Price $4.25 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 1976-1978 Dodge B300 6.6L 7.2L 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 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 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 Muffler Left Exhaust System Insulator for 2008-2011 Subaru Impreza 2.5L H4Special Price $5.26 Regular Price $7.99
- Walker Muffler Left Exhaust System Insulator for 2019 Ford Explorer 3.5L V6Special Price $7.76 Regular Price $10.99
- Walker Muffler Left Exhaust System Insulator for 2000-2002 Chevrolet Monte Carlo 3.8L V6Special Price $7.76 Regular Price $10.99
- Walker Muffler Left Exhaust System Insulator for 2003-2008 Hyundai Tiburon 2.0L 2.7L L4 V6Special Price $7.76 Regular Price $10.99
- Walker Muffler Left Exhaust System Insulator for 2007-2012 Lincoln MKZ 3.5L V6Special Price $8.09 Regular Price $11.99
- 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 Muffler Left Exhaust System Insulator for 2003-2008 Hyundai Tiburon 2.0L 2.7L L4 V6Special Price $9.51 Regular Price $13.99
- 2 pc Walker Muffler Left Exhaust System Insulators for 2009-2013 Subaru Forester 2.5L H4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Left Exhaust System Insulators for 2008-2010 Subaru Impreza 2.5L H4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Left Exhaust System Insulators for 2005-2008 Subaru Legacy 2.5L H4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Left Exhaust System Insulators for 1997-2008 Pontiac Grand Prix 3.8L V6Special Price $16.95 Regular Price $23.99