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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- Walker Resonator Assm To Muffler Assm Exhaust Bolt & Spring for 1990-2001 Acura Integra 1.8L L4Special Price $12.75 Regular Price $17.99
- Walker Resonator Assm To Extension Pipe Exhaust Bolt & Spring for 2003-2005 Toyota Matrix 1.8L L4Special Price $12.75 Regular Price $17.99
- Walker Resonator Assm To Muffler Assm Exhaust Bolt & Spring for 1993-1995 Honda Civic del Sol 1.5L 1.6L L4Special Price $12.75 Regular Price $17.99
- Walker Front Pipe To Converter Exhaust Bolt & Spring for 1988-2001 Acura Integra 1.6L 1.7L 1.8L L4Special Price $12.75 Regular Price $17.99
- Walker Int Pipe To Muffler Assm Exhaust Bolt & Spring for 1988-1991 Honda Civic 1.5L 1.6L L4Special Price $12.75 Regular Price $17.99
- Walker Converter To Resonator Assm Exhaust Bolt & Spring for 2005 Subaru Legacy 2.5L H4Special Price $12.75 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2016 Subaru Crosstrek 2.0L H4Special Price $12.75 Regular Price $17.99
- Walker Exhaust Bolt & Spring for 1979-1980 Cadillac DeVille 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1981 Pontiac Bonneville 4.9L 5.0L 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1990-1996 GMC P3500 7.4L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1977 Oldsmobile Omega 4.3L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Converter Inlet Exhaust Bolt & Spring for 1994 Chevrolet Corsica 3.1L V6Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1990-1996 Chevrolet P30 7.4L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1977 Buick Skylark 4.3L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1977 Pontiac Ventura 4.3L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1985 Oldsmobile Cutlass Salon 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1987 Buick Regal 5.0L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1976-1988 Oldsmobile Cutlass Supreme 4.3L 5.0L 5.7L 6.6L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe To Extension Pipe Exhaust Bolt & Spring for 1976 Oldsmobile Cutlass Tiara 5.7L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977 Buick Century 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1983-1984 GMC Caballero 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1975-1990 Oldsmobile Custom Cruiser 5.0L 5.7L 6.6L 7.5L V8Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1977-1989 Buick Electra 5.0L 5.7L 6.6L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1983 Oldsmobile Cutlass Cruiser 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1981-1984 Pontiac Bonneville 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Converter Inlet Exhaust Bolt & Spring for 1994 Chevrolet Beretta 3.1L V6Special Price $14.64 Regular Price $20.99
- Walker Exhaust Bolt & Spring for 1979-1986 Cadillac Fleetwood 5.0L 5.7L V8Special Price $14.64 Regular Price $20.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1984 Chevrolet Monte Carlo 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1978 Buick Riviera 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1980 Chevrolet Impala 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1981-1984 Pontiac Grand Prix 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1980-1986 Pontiac Parisienne 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1978 Pontiac Grand Safari 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1975-1984 Oldsmobile 98 5.0L 5.7L 6.6L 7.5L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1990 Buick LeSabre 3.8L 5.0L 5.7L 6.6L V6 V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1983-1984 Chevrolet El Camino 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Front Exhaust Bolt & Spring for 1982-1983 Chevrolet Malibu 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977-1981 Pontiac Catalina 3.8L 5.0L 5.7L 6.6L V6 V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977 Pontiac LeMans 5.7L 6.6L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1984 Oldsmobile Cutlass Calais 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1979-1984 Oldsmobile Cutlass Calais 4.3L 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe Inlet Exhaust Bolt & Spring for 1980-1985 Oldsmobile Cutlass Supreme 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1977 Pontiac Phoenix 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1980-1990 Chevrolet Caprice 5.0L 5.7L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe To Extension Pipe Exhaust Bolt & Spring for 1975-1977 Oldsmobile Cutlass 5.7L 7.5L V8Special Price $15.11 Regular Price $21.99
- Walker Front Pipe To Extension Pipe Exhaust Bolt & Spring for 1975-1976 Oldsmobile Cutlass Salon 5.7L 7.5L V8Special Price $15.11 Regular Price $21.99
- Walker Exhaust Bolt & Spring for 1976-1987 Oldsmobile Cutlass Salon 4.3L 5.0L 5.7L 6.6L 7.5L V8Special Price $15.11 Regular Price $21.99