Part Number: 315531 2005-2006 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2005-2006: SLE; 8Cyl 6.0L; 2005-2006: SLE; 8Cyl 8.1L; 2005-2006: SLT; 8Cyl 6.0L; 2005-2006: SLT; 8Cyl 8.1L; $505.46 Gibson Swept Side Exhaust Systems Minimum welding required to complete installation. Part Number: 315531 2000-2004 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2000-2004: SLE; 8Cyl 6.0L; 2000-2004: SLT; 8Cyl 6.0L; 2001-2004: SLE; 8Cyl 8.1L; 2001-2004: SLT; 8Cyl 8.1L; $505.46 Gibson Swept Side Exhaust Systems Minimum welding required to complete installation. Part Number: 315601 2007-2009 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2007-2009: SLE; 8Cyl 6.0L; 2007-2009: SLT; 8Cyl 6.0L; $505.46 Gibson Swept Side Exhaust Systems Part Number: 615531 2005-2006 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2005-2006: SLE; 8Cyl 6.0L; 2005-2006: SLE; 8Cyl 8.1L; 2005-2006: SLT; 8Cyl 6.0L; 2005-2006: SLT; 8Cyl 8.1L; $688.34 Gibson Swept Side Exhaust Systems Minimum welding required for installation. Part Number: 615531 2000-2004 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2000-2004: SLE; 8Cyl 6.0L; 2000-2004: SLT; 8Cyl 6.0L; 2001-2004: SLE; 8Cyl 8.1L; 2001-2004: SLT; 8Cyl 8.1L; $688.34 Gibson Swept Side Exhaust Systems Minimum welding required for installation. Part Number: 615601 2007 GMC Yukon XL 2500 Gibson Exhaust System Swept Side Polished 2007-2007: SLE; 8Cyl 6.0L; 2007-2007: SLT; 8Cyl 6.0L; $688.34 Gibson Swept Side Exhaust Systems