2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
1
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 133.0 In.
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 133.0 In.
1 Per Vehicle
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
1
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 143.5 In.
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 143.5 In.
1 Per Vehicle
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
1
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 153.0 In.
2003 GMC Sierra 2500 HD equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV, 6.0L V8 CNG OHV
Must Use with Part Number(s) 21533 with 2.5 (in) Muffler Inlet with Federal Emissions System except Low Emission Vehicle (LEV) with Small Diameter Muffler Use Reducer Bushing 41974 to connect with OE Converter Pipe Wheel Base 153.0 In.