Failed an emissions test? This can be down to dozens of reasons but is largely limited to parts in the car Fuel Delivery System. Causes can be as simple as a leaking gas cap, faulty vapor canisters that trap gas vapors in the fuel return lines to damage to the EGR Valves that recirculate exhaust gasses and reduce nitrogen oxides. Increased emissions can also be down to skipping maintenance intervals with regular replacement parts like vehicle Air Filters to deliver oxygen-rich and cleansed air for better engine efficiency, and Engine Oil Filters to filter out contaminants that cause wear.
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- 2 pc Walker Muffler Exhaust System Insulators for 1991 Nissan Sentra 1.6L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 1993-1997 Toyota Corolla 1.6L 1.8L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2014-2015 Kia Sorento 2.4L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 1991-1993 Nissan NX 1.6L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2003-2010 Pontiac Vibe 1.8L 2.4L L4Special Price $11.30 Regular Price $15.99
- 2 pc Walker Muffler Exhaust System Insulators for 2007-2010 Pontiac G5 2.2L 2.4L L4Special Price $11.30 Regular Price $15.99
- Walker Muffler Exhaust Bolt & Spring for 1995-1998 Mazda Protege 1.5L L4Special Price $12.32 Regular Price $17.99
- 3 pc Walker Muffler Exhaust System Insulators for 1991-1993 Nissan NX 2.0L L4Special Price $16.82 Regular Price $23.99
- 3 pc Walker Muffler Exhaust System Insulators for 1991-1999 Nissan Sentra 1.6L L4Special Price $17.33 Regular Price $24.99
- 3 pc Walker Muffler Exhaust System Insulators for 1992-1996 Toyota Camry 2.2L L4Special Price $17.33 Regular Price $24.99
- 3 pc Walker Muffler Exhaust System Insulators for 2009-2014 Nissan Cube 1.8L L4Special Price $17.33 Regular Price $24.99
- 2 pc Walker Muffler Exhaust System Insulators for 1996-2005 Chevrolet Express 2500 4.3L 5.0L 5.3L 5.7L 6.5L V6 V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Muffler Exhaust System Insulators for 1997-2000 Ford E-350 Econoline 5.4L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Muffler Exhaust System Insulators for 1997-2002 Ford E-350 Econoline Club Wagon 5.4L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Muffler Exhaust System Insulators for 1996-2000 GMC Savana 3500 5.7L 7.4L V8Special Price $19.94 Regular Price $27.99
- 2 pc Walker Muffler Exhaust System Insulators for 1997-1999 Chevrolet Malibu 2.4L L4Special Price $20.51 Regular Price $28.99
- 2 pc Walker Muffler Exhaust System Insulators for 2002 Ford E-350 Club Wagon 5.4L V8Special Price $20.51 Regular Price $28.99
- 2 pc Walker Muffler Exhaust System Insulators for 1996-2005 GMC Savana 2500 4.3L 5.0L 5.3L 5.7L 6.5L V6 V8Special Price $20.51 Regular Price $28.99
- 2 pc Walker Muffler Exhaust System Insulators for 1996-2002 Chevrolet Express 1500 4.3L 5.0L 5.7L V6 V8Special Price $20.51 Regular Price $28.99