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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Fel-Pro Exhaust Pipe Flange Gasket for 2003-2006 Jeep TJ 2.4L L4Special Price $10.64 Regular Price $14.99 -
Fel-Pro Exhaust Manifold Gasket Set for 2003-2006 Jeep TJ 2.4L L4Special Price $15.61 Regular Price $21.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1997-2006 Jeep TJ 2.5L 4.0L L4 L6Special Price $19.83 Regular Price $27.99 -
Fel-Pro Exhaust Manifold Hardware Kit for 1997-2006 Jeep TJ 4.0L L6Special Price $43.64 Regular Price $61.99



























