The MagnaFlow 5" X 11" Oval Straight-Through 12588 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3/2.5in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 12588's weight-optimized 5x11x22in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12588 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow’s limited lifetime construction warranty.
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Vehicle Fitment

Years	Make	Model	Trim
2003–2006	Cadillac	Escalade	Base
2003–2006	Cadillac	Escalade ESV	Base
2003–2006	Cadillac	Escalade EXT	Base
2007–2008	Chevrolet	Suburban 2500	LS
2007–2008	Chevrolet	Suburban 2500	LT
2007	Chevrolet	Suburban 2500	LTZ
1996–1999	Chevrolet	Tahoe	Base
1996–1999	Chevrolet	Tahoe	LS
1996–1999	Chevrolet	Tahoe	LT
2008	Chevrolet	Trailblazer	Base
2002–2007	Chevrolet	Trailblazer	LS
2002–2009	Chevrolet	Trailblazer	LT
2002–2003	Chevrolet	Trailblazer	LTZ
2002–2004	Chevrolet	Trailblazer	North Face
2003–2006	Chevrolet	Trailblazer EXT	LS
2002–2006	Chevrolet	Trailblazer EXT	LT
2002–2004	Chevrolet	Trailblazer EXT	North Face
2009–2010	Dodge	RAM 1500	Laramie
2009–2010	Dodge	RAM 1500	SLT
2009–2010	Dodge	RAM 1500	Sport
2009–2010	Dodge	RAM 1500	ST
2009–2010	Dodge	RAM 1500	TRX
2009–2010	Dodge	RAM 1500	Trx4
2004–2009	GMC	Envoy	SLE
2004–2009	GMC	Envoy	SLT
1999	GMC	Yukon	Denali
1996–1997	GMC	Yukon	SL
1996–1999	GMC	Yukon	SLE
1996–1999	GMC	Yukon	SLT
2003–2006	GMC	Yukon XL 1500	Denali
2007–2008	GMC	Yukon XL 2500	SLE
2007–2008	GMC	Yukon XL 2500	SLT
2006	Isuzu	Ascender	Base
2004–2006	Isuzu	Ascender	LS
2004–2005, 2007–2008	Isuzu	Ascender	S
2013–2016	Nissan	Frontier	Desert Runner
2010	Nissan	Frontier	LE
2010–2016	Nissan	Frontier	PRO-4X
2011–2016	Nissan	Frontier	S
2010	Nissan	Frontier	SE
2011–2016	Nissan	Frontier	SL
2011–2016	Nissan	Frontier	SV
2011–2014	RAM	1500	BIG Horn
2012–2014	RAM	1500	Express
2013–2014	RAM	1500	HFE
2012–2014	RAM	1500	Laramie
2014	RAM	1500	Laramie Limited
2012–2014	RAM	1500	Laramie Longhorn
2014	RAM	1500	Lone Star
2011–2014	RAM	1500	Outdoorsman
2013	RAM	1500	R/T
2011–2014	RAM	1500	SLT
2014	RAM	1500	Special Service
2012–2014	RAM	1500	Sport
2011–2012	RAM	1500	ST
2012–2014	RAM	1500	Tradesman
2012	RAM	1500	Tradesman HD
2011	RAM	2500	Laramie
2011	RAM	2500	Laramie Longhorn
2011	RAM	2500	Power Wagon
2011	RAM	2500	SLT
2011	RAM	2500	ST
2001–2006	Toyota	Sequoia
2001–2006	Toyota	Sequoia	Limited
2001–2002, 2007–2011, 2014–2015	Toyota	Tundra
2007–2013	Toyota	Tundra	Base
2001–2002, 2007–2013	Toyota	Tundra	Limited
2013	Toyota	Tundra	Platinum
2014–2015	Toyota	Tundra	SR