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 Front Pipe To Muffler Exhaust Clamp for 1964-1966 GMC G1000 Series 2.5L 3.2L 3.8L L4 L6Special Price $3.67 Regular Price $4.99
- Walker Extension Pipe Exhaust System Insulator for 2000-2007 Ford Taurus 3.0L V6Special Price $4.68 Regular Price $6.99
- 3 pc Walker Tail Pipe Exhaust System Insulators for 2011-2017 GMC Sierra 3500 HD 6.0L V8Special Price $30.15 Regular Price $42.99
- 3 pc Walker Tail Pipe Exhaust System Insulators for 2005-2007 Ford E-250 5.4L V8Special Price $29.38 Regular Price $44.99
- 3 pc Walker Tail Pipe Exhaust System Insulators for 2011-2017 GMC Sierra 2500 HD 6.0L V8Special Price $29.38 Regular Price $44.99
- 3 pc Walker Tail Pipe Exhaust System Insulators for 2011-2017 Chevrolet Silverado 3500 HD 6.0L V8Special Price $30.15 Regular Price $44.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1971-1974 GMC G35 G3500 Van 4.1L 4.8L L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1961-1964 Ford F-100 3.6L 4.3L L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1964-1974 Chevrolet G10 Van 2.5L 3.2L 3.8L 4.1L L4 L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 Chevrolet K10 Pickup 3.8L 4.1L 4.8L L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1974 GMC G25 G2500 Van 3.8L 4.1L 4.8L L6Special Price $3.43 Regular Price $3.54
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 GMC K25 K2500 Pickup 4.1L 4.8L L6Special Price $3.43 Regular Price $3.54
- Walker Front Pipe To Muffler Exhaust Clamp for 1971-1974 Chevrolet G30 Van 4.1L 4.8L L6Special Price $3.67 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1973-1975 Ford F-250 3.9L 4.9L L6Special Price $3.67 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1971-1972 Chevrolet C20 Pickup 4.1L 4.8L L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1967 Chevrolet P20 Series 3.8L 4.1L 4.8L L6Special Price $3.43 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1968-1972 Chevrolet P20 Van 4.1L 4.8L L6Special Price $3.67 Regular Price $4.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1972 GMC P25 P2500 Van 4.1L 4.8L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1974 GMC G15 G1500 Van 3.8L 4.1L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1978 Ford F-350 4.9L L6Special Price $3.43 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1974 Chevrolet G20 Van 3.8L 4.1L 4.8L L6Special Price $3.43 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 GMC K15 K1500 Pickup 3.8L 4.1L 4.8L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1967-1970 Chevrolet K20 Pickup 4.1L 4.8L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1967 Chevrolet P30 Series 3.8L 4.1L 4.8L L6Special Price $3.43 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1969-1974 Ford E-200 Econoline 2.8L 3.9L 4.9L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1966 GMC PB25 Series 4.1L L6Special Price $3.43 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1969-1974 Ford E-100 Econoline 3.9L L6Special Price $3.67 Regular Price $5.99
- Walker Front Pipe To Muffler Exhaust Clamp for 1963-1966 Chevrolet C30 Pickup 3.8L 4.1L 4.8L L6Special Price $3.67 Regular Price $5.99
- Walker Tail Pipe Exhaust System Insulator for 1992-1993 Acura Integra 1.7L L4Special Price $3.82 Regular Price $4.11
- Walker Tail Pipe Exhaust System Hanger for 1977-1980 Volkswagen Scirocco 1.5L 1.6L L4Special Price $4.81 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 2000-2005 Mercury Sable 3.0L V6Special Price $4.94 Regular Price $6.99
- Walker Tail Pipe Exhaust System Insulator for 2006-2012 Toyota RAV4 2.4L 2.5L L4Special Price $4.68 Regular Price $6.99
- Walker Extension Pipe Exhaust System Insulator for 2003-2010 Pontiac Vibe 1.8L 2.4L L4Special Price $4.68 Regular Price $6.99
- Walker Tail Pipe Exhaust System Hanger for 1983-1984 Volkswagen Rabbit 1.7L L4Special Price $4.81 Regular Price $6.99