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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- Gates PCV Valve To Intake Engine Crankcase Breather Hose for 2005-2009 Audi A4 Quattro 2.0L L4Special Price $34.32 Regular Price $35.02
- Walker Extension Pipe To Muffler Exhaust Clamp for 1984-1991 Honda Civic 1.3L 1.5L 1.6L L4Special Price $2.32 Regular Price $2.45
- Walker Extension Pipe To Muffler Exhaust Clamp for 1991 Nissan Sentra 1.6L L4Special Price $3.07 Regular Price $4.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1989-1992 Dodge Colt 1.5L L4Special Price $3.07 Regular Price $4.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1991-1993 Nissan NX 1.6L L4Special Price $3.07 Regular Price $4.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1987-1989 Toyota Celica 2.0L L4Special Price $3.31 Regular Price $4.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1992-1994 Mitsubishi Montero 3.0L V6Special Price $3.43 Regular Price $3.54
- Walker Extension Pipe To Muffler Exhaust Clamp for 2005-2009 Mazda B2300 2.3L L4Special Price $3.67 Regular Price $4.99
- Walker Extension Pipe To Muffler Exhaust Clamp for 1986-1988 Nissan Stanza 2.0L L4Special Price $3.31 Regular Price $4.99
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