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Magnaflow 51209

OBD-II 49-State Universal Catalytic Converter Body Shape: Round, Center/Center

Magnaflow 51209

642-51209

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Magnaflow 51209 OBD-II 49-State Universal Catalytic Converter Body Shape: Round, Center/Center $124.39
OBD-II 49-State Universal Catalytic Converter
  • Body Shape: Round, Center/Center
  • Inlet/Outlet: 3"
  • Width: 5.125"
  • Body Length: 9"
  • Overall Length: 13"

  • Specifications:

    Overall Length (in.)
    13
    Inlet Size (in.)
    3
    Outlet Size (in.)
    3
    Material
    Stainless Steel
    Emission
    Non-California (49-State)
    Converter Body Size
    OEM
    Core Substrate Material
    OEM
    Outlet Quantity
    1
    California Air Board Approved
    No
    Universal Or Specific Fit
    Universal
    Catalytic Converter Format
    Pre-Catalytic Converter and Main Catalytic Converter
    Oxygen Sensor Location
    N/A
    CAT Converter Air Tube Adapter
    Not Air Tube Kit Adaptable
    Recommended Use
    Converter
    AIR Tube
    No
    Body Size
    OEM
    California Legal
    No
    Converter Style
    3-way
    Heat Shield
    Yes
    Inlet Attachment
    Slip fit
    Outlet Attachment
    Slip fit
    Quantity
    Sold individually
    Substrate Material
    Ceramic honeycomb
    Substrate Material
    OEM
    Outlet Quantity
    One
    Case Material
    Stainless steel
    Inlet Diameter (in.)
    3
    Outlet Diameter (in.)
    3
    Inlet Quantity
    One
    Manufacturer's Part Number:
    51209

    Magnaflow OBD-II 49-State & Canada Universal Catalytic Converters are designed for engines built in 1996 or after. Each converter has a ribbed stainless steel body that minimizes expansion and distortion when the converter heats up. The ribs form a channel that protects the cushioning mat from direct exposure to exhaust gas and they hold the ceramic catalyst in proper alignment. An aluminized or stainless OE-style ribbed heat shield creates a rigid wall of protection against heat and adds to the structural stability of the converter. Magnaflow converters have a 1/2" lap-joint where the necks meet the body. The neck does not extend into the converter body where it could hamper exhaust flow. This is the strongest and smoothest flowing inlet/outlet joint of any manufacturer. A monolithic honeycomb catalyst is utilized. The ceramic is designed for maximum flow and surface area. The coating method is strictly controlled to maintain exact specifications. .

    Selecting the Proper OBD-II Universal-Fit Catalytic Converter
    Determine engine size and vehicle weight first. Converters are listed according to legal engine size and vehicle weight. Determine the type of converter being replaced. PRE OBD-II converters are for vehicles built before 1996. If the vehicle was built in 1996 or after, an OBD-II converter must be used. If engine has been changed and is not the same model year as the chassis, proceed as follows:

  • If the engine is older than the chassis, select the converter according to the chassis model year.
  • If the engine is newer than the chassis, select the converter according to the engine requirement.

    Check whether the vehicle is Federal or California Emissions. Required by the EPA, this information is on the vehicle emission control information label (example shown below) located in the engine compartment in a visible position on the hood underside, shock tower, radiator support, fan shroud, or firewall.

    Note: Federal emissions 49-state catalytic converters are not legal for sale, installation, or use on licensed vehicles in the state of California.

  • Does Magnaflow 51209 fit your vehicle?

    Narrow Results

    2009-2012 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LS

    2010-2012 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LT

    2009 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: WT
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2000-2001 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2006 CHEVROLET SILVERADO 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2012 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: XFE

    2002-2005 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2006 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2002 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SL
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2006 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SL
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2002-2004 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2010-2013 GMC YUKON

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: DENALI HYBRID

    2010-2013 GMC YUKON

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: HYBRID

    2000 GMC YUKON XL 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLT

    2009-2013 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: SL
    • EngineType: ALL

    2007 GMC SIERRA 1500 HD CLASSIC

    • Fitment_Note: With 3in. Muffler Inlet~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2005-2006 GMC YUKON XL 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2012-2013 GMC YUKON

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • Aspiration: N
    • SubModel: SLE
    • Engine Vin: 0
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2007 CHEVROLET SILVERADO 1500 HD CLASSIC

    • Fitment_Note: With 3in. Muffler Inlet~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2003-2004 GMC YUKON XL 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLT

    2001 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LS
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009-2013 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.8
    • SubModel: SLE
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    2010-2011 GMC YUKON

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLT

    2013 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: BLACK DIAMOND LT

    2000 GMC YUKON XL 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLE

    2012-2013 GMC YUKON

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • Aspiration: N
    • SubModel: SLT
    • Engine Vin: 0
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2006 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LS
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET SILVERADO 1500

    • CC: 5967
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LTZ
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2013 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: BLACK DIAMOND LS

    2002-2005 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2002-2004 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2003 CHEVROLET SILVERADO 1500 HD

    • CC: 5967
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2006-2009 JEEP GRAND CHEROKEE (WK)

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SRT8

    2005-2006 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2006 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: WT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009-2012 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.3
    • SubModel: WT
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    2002-2005 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LS
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2007-2008 CHEVROLET SUBURBAN 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2003 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: WT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2003 GMC YUKON XL 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: DENALI

    2011 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: XFE
    • EngineType: ALL

    2009 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: LS
    • EngineType: ALL

    2010-2012 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LTZ

    2001-2002 GMC YUKON XL 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2007-2009 GMC YUKON XL 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2004-2005 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: WT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2003 CHEVROLET SILVERADO 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LS

    2009-2013 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.8
    • SubModel: WT
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    2009 CHEVROLET AVALANCHE

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: LTZ
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2001-2006 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LS
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2010-2011 GMC YUKON

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLE

    2009-2013 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: WT
    • EngineType: ALL

    2001 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2004-2006 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: WT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2010-2013 CADILLAC ESCALADE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: HYBRID

    2010-2013 CHEVROLET TAHOE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: HYBRID

    2000 CHEVROLET SUBURBAN 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LT

    2005-2006 GMC YUKON XL 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: LTZ
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2013 CHEVROLET AVALANCHE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: BLACK DIAMOND LTZ

    2008-2009 DODGE CALIBER

    • CC: 2360
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 2.4
    • SubModel: SRT-4
    • CUI: 144
    • EngineType: L4 ( 2.4 L / 144 )

    2005 CHEVROLET SILVERADO 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LS

    2003 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: WT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001 CHEVROLET SUBURBAN 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001 GMC YUKON

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: DENALI

    2001-2003 GMC SIERRA 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2009-2013 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.8
    • SubModel: LT
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    2001-2002 CHEVROLET EXPRESS 2500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2010-2013 CADILLAC ESCALADE

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: HYBRID PLATINUM

    2010 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: XFE

    2005-2006 GMC SIERRA 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: ALL

    2009 CHEVROLET SILVERADO 1500

    • CC: 5967
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2000 CHEVROLET SUBURBAN 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LS

    2010-2013 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.8
    • SubModel: LS
    • CUI: 294
    • EngineType: V8 ( 4.8 L / 294 )

    2005 CHEVROLET SILVERADO 1500 HD

    • Fitment_Note: Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LT

    2005 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET SILVERADO 1500

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: LT
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2001 CHEVROLET SILVERADO 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: LT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET SUBURBAN 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LT

    2003-2004 GMC YUKON XL 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: SLE

    2013 CHEVROLET SILVERADO 1500

    • CC: 4293
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 4.3
    • SubModel: WT
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    2001-2006 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2006 GMC SIERRA 2500 HD

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET SUBURBAN 2500

    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • EngineType: ALL
    • SubModel: LS

    2001-2002 GMC YUKON XL 2500

    • CC: 5967
    • Fitment_Note: Without Pre-Converter~Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: SLT
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2001-2002 CHEVROLET EXPRESS 2500

    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2009-2013 GMC SIERRA 1500

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: SLT
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2013 GMC SIERRA 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: XFE
    • EngineType: ALL

    2009-2013 CHEVROLET SILVERADO 1500

    • Fitment_Note: Cutting And Welding Required During Installation
    • SubModel: HYBRID
    • EngineType: ALL

    2005 CHEVROLET SILVERADO 1500 HD

    • CC: 5967
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 364
    • EngineType: V8 ( 6.0 L / 364 )

    2009 CHEVROLET AVALANCHE

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: LT
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )

    2009-2013 GMC SIERRA 1500

    • CC: 5328
    • Fitment_Note: Cutting And Welding Required During Installation
    • Liter: 5.3
    • SubModel: SLE
    • CUI: 325
    • EngineType: V8 ( 5.3 L / 325 )
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