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
- Walker SoundFX Exhaust Muffler for 2004-2011 Ford Ranger 2.3L 3.0L 4.0L L4 V6Special Price $92.46 Regular Price $131.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1968-1970 Plymouth Belvedere 6.3L V8Special Price $128.73 Regular Price $183.99
- Walker SoundFX Exhaust Muffler for 1974 Ford LTD 5.8L V8Special Price $69.13 Regular Price $98.99
- Walker SoundFX Exhaust Muffler for 1988 Dodge B250 3.9L 5.2L 5.9L V6 V8Special Price $69.13 Regular Price $98.99
- Walker SoundFX Exhaust Muffler for 1969-1971 Mercury Cyclone 5.8L V8Special Price $70.55 Regular Price $100.99
- Walker SoundFX Exhaust Muffler for 1973-1974 Oldsmobile 98 7.5L V8Special Price $70.55 Regular Price $100.99