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 Exhaust Clamp for 2005-2018 Nissan Frontier 2.5L L4Special Price $10.46 Regular Price $14.99 -
Walker Exhaust System Insulator for 1999-2004 Nissan Frontier 3.3L V6Special Price $10.80 Regular Price $14.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1998-2016 Nissan Frontier 2.4L 4.0L L4 V6Special Price $10.89 Regular Price $15.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 1998-2004 Nissan Frontier 2.4L L4Special Price $11.71 Regular Price $16.99 -
Walker Exhaust Pipe Flange Gasket for 1999-2018 Nissan Frontier 2.4L 2.5L 3.3L L4 V6Special Price $9.38 Regular Price $12.99Out of stock -
Walker Converter Rear Left To Front Pipe Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $9.38 Regular Price $12.99Out of stock -
Walker Exhaust Clamp for 2001-2004 Nissan Frontier 2.4L L4Special Price $9.44 Regular Price $12.99Out of stock -
Walker Converter Rear Right To Muffler Assm Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $9.57 Regular Price $13.99Out of stock -
Fel-Pro EGR Valve Gasket for 1998-2004 Nissan Frontier 2.4L 3.3L L4 V6Special Price $9.68 Regular Price $13.99 -
Walker Front Pipe To Muffler Assm Exhaust Clamp for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.24 Regular Price $14.99 -
Walker Converter Inlet Front Right Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.24 Regular Price $14.99Out of stock -
Walker Converter Front Right To Rear Right Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.24 Regular Price $14.99Out of stock -
Walker Exhaust Clamp for 2001-2018 Nissan Frontier 2.5L 3.3L L4 V6Special Price $10.30 Regular Price $14.99 -
Walker Muffler Assm To Tail Pipe Exhaust Clamp for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.30 Regular Price $14.99 -
Walker Converter Front Left To Rear Left Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.45 Regular Price $14.99Out of stock -
Walker Converter Inlet Front Left Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 4.0L V6Special Price $10.45 Regular Price $14.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 2005-2018 Nissan Frontier 2.5L L4Special Price $10.45 Regular Price $14.99Out of stock -
Fel-Pro Rear Exhaust Pipe Flange Gasket for 2013-2016 Nissan Frontier 2.5L L4Special Price $11.11 Regular Price $15.99 -
Fel-Pro Exhaust Pipe Flange Gasket for 2005-2016 Nissan Frontier 2.5L 4.0L L4 V6Special Price $11.40 Regular Price $15.99 -
Walker Exhaust Pipe Flange Gasket for 1998-2000 Nissan Frontier 2.4L L4Special Price $11.51 Regular Price $15.99Out of stock -
Fel-Pro Exhaust Pipe Flange Gasket for 1999-2004 Nissan Frontier 3.3L V6Special Price $11.71 Regular Price $16.99 -
Walker Exhaust Pipe Flange Gasket for 1998-2000 Nissan Frontier 2.4L L4Special Price $12.49 Regular Price $17.99Out of stock -
Walker Exhaust Pipe Flange Gasket for 1998-2000 Nissan Frontier 2.4L L4Special Price $12.70 Regular Price $17.99 -
Fel-Pro EGR Valve Gasket for 1999-2004 Nissan Frontier 3.3L V6Special Price $12.92 Regular Price $17.99 -
2 pc Walker Exhaust System Insulators for 1998-2004 Nissan Frontier 2.4L L4Special Price $14.52 Regular Price $20.99Out of stock -
2 pc Walker Exhaust Pipe Flange Gaskets for 1999-2004 Nissan Frontier 3.3L V6Special Price $15.19 Regular Price $21.99Out of stock -
Fel-Pro Exhaust Manifold Gasket Set for 1998-2004 Nissan Frontier 2.4L L4Special Price $19.30 Regular Price $27.99 -
Fel-Pro Exhaust Manifold Gasket Set for 2005-2018 Nissan Frontier 4.0L V6Special Price $19.69 Regular Price $27.99 -
Dorman Right Exhaust Manifold for 1999-2004 Nissan Frontier 3.3L V6Special Price $175.46 Regular Price $250.99 -
Dorman Left Exhaust Manifold for 1999-2004 Nissan Frontier 3.3L V6Special Price $178.53 Regular Price $254.99 -
Dorman Exhaust Manifold for 1998-2001 Nissan Frontier 2.4L L4Special Price $223.24 Regular Price $318.99 -
Dorman Exhaust Manifold for 1998-2001 Nissan Frontier 2.4L L4Special Price $223.24 Regular Price $318.99


















































