MagnaFlow 12198 Oval Straight-Through Performance Muffler for GMC Suburban and V1500 – 5x8 Inch

The MagnaFlow 5 X 8in. Oval Straight-Through Performance Exhaust Muffler 12198 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 12198s weight-optimized 5x8x14in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12198 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. Magnaflow Straight-Through Performance Muffler; 3/2.5in. Center/Dual; 5x14x8 Body Need further assistance? Call 1-800-990-0905.

• Delivers a Smooth, Deep Tone
• Delivers A Smooth-Deep Tone
• Mufflers Are Bi-Directional
• 100 Percent Stainless Steel
• 100% Stainless Steel

Upgrade your vehicle’s exhaust system with the MagnaFlow 12198 oval straight-through performance muffler, designed to deliver a deep, smooth tone that enhances your driving experience. Crafted from 100% stainless steel, this durable and corrosion-resistant muffler features a free-flowing perforated core wrapped in stainless steel mesh and acoustic fiber fill, ensuring optimal sound quality and performance. Its reversible 3/2.5-inch inlet/outlet design provides flexible installation options, allowing you to configure the muffler in various orientations to suit your vehicle's setup. The sleek satin finish adds a refined look to your exhaust system, complementing your vehicle’s aesthetics and ensuring long-lasting appeal. Manufactured using advanced CNC robotic techniques, the MagnaFlow 12198 offers precise construction and a limited lifetime warranty for peace of mind.

Designed specifically for fitment on select GMC models including the 1988–1991 GMC V1500 and V2500 Suburban, this muffler is an ideal upgrade for enthusiasts seeking improved exhaust flow and a more aggressive sound profile. Its bi-directional design simplifies installation, but professional installation is recommended to ensure optimal performance and fitment. Whether you're looking to boost your vehicle’s sound or enhance its exhaust efficiency, the MagnaFlow 12198 provides a reliable, high-quality solution built to last for years of driving enjoyment.

Experience the benefits of a high-performance exhaust upgrade with this expertly engineered muffler, and enjoy the perfect balance of sound, durability, and style for your GMC or similar vehicle.

Features:

• Delivers a smooth, deep exhaust tone for enhanced driving experience

• Constructed from 100% stainless steel for durability and corrosion resistance

• Reversible 3/2.5-inch inlet/outlet design allows flexible installation options

• Oval-shaped body with satin finish adds aesthetic appeal

• Manufactured with CNC robotic precision for consistent quality

Fits
Chevrolet C1500 Cheyenne 1988
Chevrolet C1500 Cheyenne 1989
Chevrolet C1500 Cheyenne 1990
Chevrolet C1500 Cheyenne 1991
Chevrolet C1500 Cheyenne 1992
Chevrolet C1500 Cheyenne 1993
Chevrolet C1500 Scottsdale 1988
Chevrolet C1500 Scottsdale 1989
Chevrolet C1500 Scottsdale 1990
Chevrolet C1500 Scottsdale 1991
Chevrolet C1500 Scottsdale 1992
Chevrolet C1500 Silverado 1988
Chevrolet C1500 Silverado 1989
Chevrolet C1500 Silverado 1990
Chevrolet C1500 Silverado 1991
Chevrolet C1500 Silverado 1992
Chevrolet C1500 Silverado 1993
Chevrolet C1500 WT 1990
Chevrolet C1500 WT 1991
Chevrolet C1500 WT 1992
Chevrolet C1500 WT 1993
Chevrolet C1500 Suburban Base 1992
Chevrolet C1500 Suburban Base 1993
Chevrolet C1500 Suburban Silverado 1992
Chevrolet C1500 Suburban Silverado 1993
Chevrolet C2500 Cheyenne 1988
Chevrolet C2500 Cheyenne 1989
Chevrolet C2500 Cheyenne 1990
Chevrolet C2500 Cheyenne 1991
Chevrolet C2500 Cheyenne 1992
Chevrolet C2500 Cheyenne 1993
Chevrolet C2500 Scottsdale 1988
Chevrolet C2500 Scottsdale 1989
Chevrolet C2500 Scottsdale 1990
Chevrolet C2500 Scottsdale 1991
Chevrolet C2500 Scottsdale 1992
Chevrolet C2500 Silverado 1988
Chevrolet C2500 Silverado 1989
Chevrolet C2500 Silverado 1990
Chevrolet C2500 Silverado 1991
Chevrolet C2500 Silverado 1992
Chevrolet C2500 Silverado 1993
Chevrolet C2500 Suburban Base 1992
Chevrolet C2500 Suburban Base 1993
Chevrolet C2500 Suburban Silverado 1992
Chevrolet C2500 Suburban Silverado 1993
Chevrolet K1500 Cheyenne 1988
Chevrolet K1500 Cheyenne 1989
Chevrolet K1500 Cheyenne 1990
Chevrolet K1500 Cheyenne 1991
Chevrolet K1500 Cheyenne 1992
Chevrolet K1500 Cheyenne 1993
Chevrolet K1500 Scottsdale 1988
Chevrolet K1500 Scottsdale 1989
Chevrolet K1500 Scottsdale 1990
Chevrolet K1500 Scottsdale 1991
Chevrolet K1500 Scottsdale 1992
Chevrolet K1500 Silverado 1988
Chevrolet K1500 Silverado 1989
Chevrolet K1500 Silverado 1990
Chevrolet K1500 Silverado 1991
Chevrolet K1500 Silverado 1992
Chevrolet K1500 Silverado 1993
Chevrolet K1500 Sport 1991
Chevrolet K1500 WT 1990
Chevrolet K1500 WT 1991
Chevrolet K1500 WT 1992
Chevrolet K1500 WT 1993
Chevrolet K1500 Suburban Base 1992
Chevrolet K1500 Suburban Base 1993
Chevrolet K1500 Suburban Silverado 1992
Chevrolet K1500 Suburban Silverado 1993
Chevrolet K2500 Cheyenne 1988
Chevrolet K2500 Cheyenne 1989
Chevrolet K2500 Cheyenne 1990
Chevrolet K2500 Cheyenne 1991
Chevrolet K2500 Cheyenne 1992
Chevrolet K2500 Cheyenne 1993
Chevrolet K2500 Scottsdale 1988
Chevrolet K2500 Scottsdale 1989
Chevrolet K2500 Scottsdale 1990
Chevrolet K2500 Scottsdale 1991
Chevrolet K2500 Scottsdale 1992
Chevrolet K2500 Silverado 1988
Chevrolet K2500 Silverado 1989
Chevrolet K2500 Silverado 1990
Chevrolet K2500 Silverado 1991
Chevrolet K2500 Silverado 1992
Chevrolet K2500 Silverado 1993
Chevrolet K2500 Suburban Base 1992
Chevrolet K2500 Suburban Base 1993
Chevrolet K2500 Suburban Silverado 1992
Chevrolet K2500 Suburban Silverado 1993
Chevrolet R1500 Suburban Scottsdale 1989
Chevrolet R1500 Suburban Scottsdale 1990
Chevrolet R1500 Suburban Scottsdale 1991
Chevrolet R1500 Suburban Silverado 1989
Chevrolet R1500 Suburban Silverado 1990
Chevrolet R1500 Suburban Silverado 1991
Chevrolet R2500 Suburban Scottsdale 1989
Chevrolet R2500 Suburban Scottsdale 1990
Chevrolet R2500 Suburban Scottsdale 1991
Chevrolet R2500 Suburban Silverado 1989
Chevrolet R2500 Suburban Silverado 1990
Chevrolet R2500 Suburban Silverado 1991
Chevrolet Silverado 1500 Custom 2016
Chevrolet Silverado 1500 Custom 2017
Chevrolet Silverado 1500 Custom 2018
Chevrolet Silverado 1500 High Country 2014
Chevrolet Silverado 1500 High Country 2015
Chevrolet Silverado 1500 High Country 2016
Chevrolet Silverado 1500 High Country 2017
Chevrolet Silverado 1500 High Country 2018
Chevrolet Silverado 1500 LS 2007
Chevrolet Silverado 1500 LS 2008
Chevrolet Silverado 1500 LS 2009
Chevrolet Silverado 1500 LS 2010
Chevrolet Silverado 1500 LS 2011
Chevrolet Silverado 1500 LS 2012
Chevrolet Silverado 1500 LS 2013
Chevrolet Silverado 1500 LS 2015
Chevrolet Silverado 1500 LS 2016
Chevrolet Silverado 1500 LS 2017
Chevrolet Silverado 1500 LS 2018
Chevrolet Silverado 1500 LT 2007
Chevrolet Silverado 1500 LT 2008
Chevrolet Silverado 1500 LT 2009
Chevrolet Silverado 1500 LT 2010
Chevrolet Silverado 1500 LT 2011
Chevrolet Silverado 1500 LT 2012
Chevrolet Silverado 1500 LT 2013
Chevrolet Silverado 1500 LT 2014
Chevrolet Silverado 1500 LT 2015
Chevrolet Silverado 1500 LT 2016
Chevrolet Silverado 1500 LT 2017
Chevrolet Silverado 1500 LT 2018
Chevrolet Silverado 1500 LTZ 2007
Chevrolet Silverado 1500 LTZ 2008
Chevrolet Silverado 1500 LTZ 2009
Chevrolet Silverado 1500 LTZ 2010
Chevrolet Silverado 1500 LTZ 2011
Chevrolet Silverado 1500 LTZ 2012
Chevrolet Silverado 1500 LTZ 2013
Chevrolet Silverado 1500 LTZ 2014
Chevrolet Silverado 1500 LTZ 2015
Chevrolet Silverado 1500 LTZ 2016
Chevrolet Silverado 1500 LTZ 2017
Chevrolet Silverado 1500 LTZ 2018
Chevrolet Silverado 1500 SSV 2015
Chevrolet Silverado 1500 SSV 2016
Chevrolet Silverado 1500 SSV 2017
Chevrolet Silverado 1500 SSV 2018
Chevrolet Silverado 1500 WT 2007
Chevrolet Silverado 1500 WT 2008
Chevrolet Silverado 1500 WT 2009
Chevrolet Silverado 1500 WT 2010
Chevrolet Silverado 1500 WT 2011
Chevrolet Silverado 1500 WT 2012
Chevrolet Silverado 1500 WT 2013
Chevrolet Silverado 1500 WT 2014
Chevrolet Silverado 1500 WT 2015
Chevrolet Silverado 1500 WT 2016
Chevrolet Silverado 1500 WT 2017
Chevrolet Silverado 1500 WT 2018
Chevrolet Silverado 1500 XFE 2010
Chevrolet Silverado 1500 XFE 2011
Chevrolet Silverado 1500 XFE 2012
Chevrolet Silverado 1500 XFE 2013
Chevrolet Silverado 1500 LD Custom 2019
Chevrolet Silverado 1500 LD LT 2019
Chevrolet Silverado 1500 LD WT 2019
Chevrolet Silverado 2500 Base 1999
Chevrolet Silverado 2500 Base 2000
Chevrolet Silverado 2500 LS 1999
Chevrolet Silverado 2500 LS 2000
Chevrolet Silverado 2500 LT 1999
Chevrolet Silverado 2500 LT 2000
Chevrolet V1500 Suburban Scottsdale 1989
Chevrolet V1500 Suburban Scottsdale 1990
Chevrolet V1500 Suburban Scottsdale 1991
Chevrolet V1500 Suburban Silverado 1989
Chevrolet V1500 Suburban Silverado 1990
Chevrolet V1500 Suburban Silverado 1991
Chevrolet V2500 Suburban Scottsdale 1989
Chevrolet V2500 Suburban Scottsdale 1990
Chevrolet V2500 Suburban Scottsdale 1991
Chevrolet V2500 Suburban Silverado 1989
Chevrolet V2500 Suburban Silverado 1990
Chevrolet V2500 Suburban Silverado 1991
Dodge Ram 1500 Base 1994
Dodge Ram 1500 Laramie 2004
Dodge Ram 1500 Laramie 2005
Dodge Ram 1500 Laramie 2006
Dodge Ram 1500 Laramie 2007
Dodge Ram 1500 Laramie 2008
Dodge Ram 1500 SLT 2004
Dodge Ram 1500 SLT 2005
Dodge Ram 1500 SLT 2006
Dodge Ram 1500 SLT 2007
Dodge Ram 1500 SLT 2008
Dodge Ram 1500 Sport 2006
Dodge Ram 1500 Sport 2007
Dodge Ram 1500 ST 2004
Dodge Ram 1500 ST 2005
Dodge Ram 1500 ST 2006
Dodge Ram 1500 ST 2007
Dodge Ram 1500 ST 2008
Dodge Ram 1500 SXT 2008
Dodge Ram 1500 TRX4 2006
Dodge Ram 1500 TRX4 2007
Ford F-150 Base 1997
Ford F-150 Base 1998
Ford F-150 Base 1999
Ford F-150 Base 2000
Ford F-150 XL 1997
Ford F-150 XL 1998
Ford F-150 XL 1999
Ford F-150 XL 2000
Ford F-150 XL 2001
Ford F-150 XL 2002
Ford F-150 XL 2003
Ford F-150 XLT 1997
Ford F-150 XLT 1998
Ford F-150 XLT 1999
Ford F-150 XLT 2000
Ford F-150 XLT 2001
Ford F-150 XLT 2002
Ford F-150 XLT 2003
Ford F-150 Heritage XL 2004
Ford F-150 Heritage XLT 2004
Ford F-250 Base 1997
Ford F-250 Base 1998
Ford F-250 Base 1999
Ford F-250 Lariat 1997
Ford F-250 Lariat 1998
Ford F-250 Lariat 1999
Ford F-250 XL 1997
Ford F-250 XL 1998
Ford F-250 XL 1999
Ford F-250 XLT 1997
Ford F-250 XLT 1998
Ford F-250 XLT 1999
GMC C1500 Sierra 1988
GMC C1500 Sierra 1989
GMC C1500 Sierra 1990
GMC C1500 Sierra 1991
GMC C1500 Sierra 1992
GMC C1500 Sierra 1993
GMC C1500 Sierra SLE 1988
GMC C1500 Sierra SLE 1989
GMC C1500 Sierra SLE 1990
GMC C1500 Sierra SLE 1991
GMC C1500 Sierra SLE 1992
GMC C1500 Sierra SLE 1993
GMC C1500 Sierra SLX 1988
GMC C1500 Sierra SLX 1989
GMC C1500 Sierra SLX 1990
GMC C1500 Sierra SLX 1991
GMC C1500 Sierra SLX 1992
GMC C1500 Sierra SLX 1993
GMC C1500 Suburban Base 1992
GMC C1500 Suburban Base 1993
GMC C1500 Suburban SLE 1992
GMC C1500 Suburban SLE 1993
GMC C2500 Sierra 1988
GMC C2500 Sierra 1989
GMC C2500 Sierra 1990
GMC C2500 Sierra 1991
GMC C2500 Sierra 1992
GMC C2500 Sierra 1993
GMC C2500 Sierra SLE 1988
GMC C2500 Sierra SLE 1989
GMC C2500 Sierra SLE 1990
GMC C2500 Sierra SLE 1991
GMC C2500 Sierra SLE 1992
GMC C2500 Sierra SLE 1993
GMC C2500 Sierra SLX 1988
GMC C2500 Sierra SLX 1989
GMC C2500 Sierra SLX 1990
GMC C2500 Sierra SLX 1991
GMC C2500 Sierra SLX 1992
GMC C2500 Sierra SLX 1993
GMC C2500 Suburban Base 1992
GMC C2500 Suburban Base 1993
GMC C2500 Suburban SLE 1992
GMC C2500 Suburban SLE 1993
GMC K1500 Sierra 1988
GMC K1500 Sierra 1989
GMC K1500 Sierra 1990
GMC K1500 Sierra 1991
GMC K1500 Sierra 1992
GMC K1500 Sierra 1993
GMC K1500 Sierra SLE 1988
GMC K1500 Sierra SLE 1989
GMC K1500 Sierra SLE 1990
GMC K1500 Sierra SLE 1991
GMC K1500 Sierra SLE 1992
GMC K1500 Sierra SLE 1993
GMC K1500 Sierra SLX 1988
GMC K1500 Sierra SLX 1989
GMC K1500 Sierra SLX 1990
GMC K1500 Sierra SLX 1991
GMC K1500 Sierra SLX 1992
GMC K1500 Sierra SLX 1993
GMC K1500 Sierra Sport 1993
GMC K1500 Suburban Base 1992
GMC K1500 Suburban Base 1993
GMC K1500 Suburban SLE 1992
GMC K1500 Suburban SLE 1993
GMC K2500 Sierra 1988
GMC K2500 Sierra 1989
GMC K2500 Sierra 1990
GMC K2500 Sierra 1991
GMC K2500 Sierra 1992
GMC K2500 Sierra 1993
GMC K2500 Sierra SLE 1988
GMC K2500 Sierra SLE 1989
GMC K2500 Sierra SLE 1990
GMC K2500 Sierra SLE 1991
GMC K2500 Sierra SLE 1992
GMC K2500 Sierra SLE 1993
GMC K2500 Sierra SLX 1988
GMC K2500 Sierra SLX 1989
GMC K2500 Sierra SLX 1990
GMC K2500 Sierra SLX 1991
GMC K2500 Sierra SLX 1992
GMC K2500 Sierra SLX 1993
GMC K2500 Suburban Base 1992
GMC K2500 Suburban Base 1993
GMC K2500 Suburban SLE 1992
GMC K2500 Suburban SLE 1993
GMC R1500 Suburban Base 1988
GMC R1500 Suburban Base 1989
GMC R1500 Suburban Base 1990
GMC R1500 Suburban Base 1991
GMC R1500 Suburban Sierra Classic 1988
GMC R1500 Suburban Sierra Classic 1989
GMC R1500 Suburban SLE 1990
GMC R2500 Suburban Base 1988
GMC R2500 Suburban Base 1989
GMC R2500 Suburban Base 1990
GMC R2500 Suburban Base 1991
GMC R2500 Suburban Sierra Classic 1988
GMC R2500 Suburban Sierra Classic 1989
GMC R2500 Suburban SLE 1990
GMC Sierra 1500 Base 2005
GMC Sierra 1500 Base 2014
GMC Sierra 1500 Base 2015
GMC Sierra 1500 Base 2016
GMC Sierra 1500 Base 2017
GMC Sierra 1500 Base 2018
GMC Sierra 1500 Denali 2014
GMC Sierra 1500 Denali 2015
GMC Sierra 1500 Denali 2016
GMC Sierra 1500 Denali 2017
GMC Sierra 1500 Denali 2018
GMC Sierra 1500 Hybrid 2005
GMC Sierra 1500 Hybrid 2006
GMC Sierra 1500 SL 2006
GMC Sierra 1500 SL 2007
GMC Sierra 1500 SL 2008
GMC Sierra 1500 SL 2009
GMC Sierra 1500 SL 2010
GMC Sierra 1500 SL 2011
GMC Sierra 1500 SL 2012
GMC Sierra 1500 SL 2013
GMC Sierra 1500 SLE 2005
GMC Sierra 1500 SLE 2006
GMC Sierra 1500 SLE 2007
GMC Sierra 1500 SLE 2008
GMC Sierra 1500 SLE 2009
GMC Sierra 1500 SLE 2010
GMC Sierra 1500 SLE 2011
GMC Sierra 1500 SLE 2012
GMC Sierra 1500 SLE 2013
GMC Sierra 1500 SLE 2014
GMC Sierra 1500 SLE 2015
GMC Sierra 1500 SLE 2016
GMC Sierra 1500 SLE 2017
GMC Sierra 1500 SLE 2018
GMC Sierra 1500 SLT 2005
GMC Sierra 1500 SLT 2006
GMC Sierra 1500 SLT 2007
GMC Sierra 1500 SLT 2008
GMC Sierra 1500 SLT 2009
GMC Sierra 1500 SLT 2010
GMC Sierra 1500 SLT 2011
GMC Sierra 1500 SLT 2012
GMC Sierra 1500 SLT 2013
GMC Sierra 1500 SLT 2014
GMC Sierra 1500 SLT 2015
GMC Sierra 1500 SLT 2016
GMC Sierra 1500 SLT 2017
GMC Sierra 1500 SLT 2018
GMC Sierra 1500 WT 2005
GMC Sierra 1500 WT 2006
GMC Sierra 1500 WT 2007
GMC Sierra 1500 WT 2008
GMC Sierra 1500 WT 2009
GMC Sierra 1500 WT 2010
GMC Sierra 1500 WT 2011
GMC Sierra 1500 WT 2012
GMC Sierra 1500 WT 2013
GMC Sierra 1500 XFE 2010
GMC Sierra 1500 XFE 2011
GMC Sierra 1500 XFE 2012
GMC Sierra 1500 XFE 2013
GMC Sierra 2500 SL 1999
GMC Sierra 2500 SL 2000
GMC Sierra 2500 SLE 1999
GMC Sierra 2500 SLE 2000
GMC Sierra 2500 SLT 1999
GMC Sierra 2500 SLT 2000
GMC V1500 Suburban Base 1988
GMC V1500 Suburban Base 1989
GMC V1500 Suburban Base 1990
GMC V1500 Suburban Base 1991
GMC V1500 Suburban Sierra Classic 1988
GMC V1500 Suburban Sierra Classic 1989
GMC V1500 Suburban SLE 1990
GMC V2500 Suburban Base 1988
GMC V2500 Suburban Base 1989
GMC V2500 Suburban Base 1990
GMC V2500 Suburban Base 1991
GMC V2500 Suburban Sierra Classic 1988
GMC V2500 Suburban Sierra Classic 1989
GMC V2500 Suburban SLE 1990