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MagnaFlow 03-06 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter

SKU: MAG4551642

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow 03-06 Chevrolet Silverado 2500 HD 6.0L Direct Fit Converter

SKU: MAG4551642

Catalytic Converters

MAG Converter Direct Fit...

A$2,868.69
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551642. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2003-2006 Chevrolet Silverado 2500 HD, 2003-2006 GMC Sierra 2500 HD, and additional vehicles. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Overview

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551642. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2003-2006 Chevrolet Silverado 2500 HD, 2003-2006 GMC Sierra 2500 HD, and additional vehicles. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.


Features and Benefits

  • Expertly Crafted To Replicate OEM Like Flow Dynamics; Maintaining Factory Performance And Fuel Efficiency
  • Torca AccuSeal® Exhaust Clamps provide a full 360-degree equally distributed clamping force preventing pipe distortion while creating a complete seal and maintaining serviceability
  • Simplifies Installation w/Essential Gaskets And Hardware Being Included In The Box
  • Your Trusted Source For CARB-Compliant Catalytic Converters; Providing Assurance Of Genuine Compliance
  • Mandrel Bent Tubing Retains OEM-Like Design And Geometry; Ensuring Smooth Exhaust Flow For Peak Fuel Economy Operation
  • Torca AccuSeal® Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force Preventing Pipe Distortion
  • OE-Sized Barbed Exhaust Hangers Made From Corrosion-Resistant 410 Stainless Steel; Designed To Reduce Noise/Vibration
  • High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
  • Durable 308 Stainless Steel MIG Welds
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box

Product Details

Air Tube Adaptable:No
Air Tube Count:0
Body Height:5
Body Length:8.750 in.
Body Material:Stainless Steel
Body Shape:Round
Body Type:Spun
Body Width:5.000 in.
CARB Executive Order Number:D-193-145
California Air Resources Board (CARB) Certified:Yes
Catalytic Converter Air Tube Adapter:Not Air Tube Kit Adaptable
Clamp Included:Yes
Clamps Included:Yes
Converter Quantity:1
Core Substrate Material:Ceramic
Description:California Direct-Fit Catalytic Converter
Finish:Stainless Steel
Gasket Included:Yes
Gasket Or Seal Included:Yes
Grade Type:Regular
Hanger Included:Yes
Hangers Included:Yes
Heat Shield Attached:No
Heat Shield Material:None
Inlet Attachment Type:Bolt-On
Inlet Attachment:Bolt-On
Inlet Diameter:2.500 in.
Inlet Gasket Included:Yes
Inlet Inside Diameter:2.5
Inlet Mounting Hardware Included:No
Inlet Quantity:1
Inlet Type:Bolt-On
Main Piping Diameter:3.000 in.
Material:Stainless Steel
Mounting Hardware Included:Yes
Outlet Attachment Type:Clamp-On
Outlet Attachment:Clamp-On
Outlet Diameter:3.000 in.
Outlet Gasket Included:No
Outlet Inside Diameter:3
Outlet Mounting Hardware Included:No
Outlet Outside Diameter:3.000 in.
Outlet Quantity:1
Outlet Type:Clamp-On
Overall Length:53.000 in.
Oxygen Sensor Location:Pre and Post Converter
Part Number:mag4551642
Pipe Material:Stainless Steel
Prop 65 Y/N:No
Sensor Port Count:2
Series:California
Substrate Material:Ceramic
Substrate:Ceramic
Subtitle:CARB Compliant Direct-Fit Catalytic Converter
Subtitles:California / CARB Compliant
Title:MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551642
Tube Material:Stainless Steel
Type:Direct-Fit
Universal Or Specific Fit:Specific
WARNING CA Proposition 65:No

Part Type

Catalytic Converters

Data: v4.2 - Upd: 2026-10-13 22:22:12

Features

  • Durable 308 stainless steel MIG welds
  • Expertly Crafted To Replicate OEM Like Flow Dynamics; Maintaining Factory Performance And Fuel Efficiency
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Mandrel Bent Tubing Retains OEM-Like Design And Geometry; Ensuring Smooth Exhaust Flow For Peak Fuel Economy Operation
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • OE-Sized Barbed Exhaust Hangers Made From Corrosion-Resistant 410 Stainless Steel; Designed To Reduce Noise/Vibration
  • Simplifies Installation w/Essential Gaskets And Hardware Being Included In The Box
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Torca AccuSeal® Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force Preventing Pipe Distortion
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Your Trusted Source For CARB-Compliant Catalytic Converters; Providing Assurance Of Genuine Compliance

Specifications

Product Attributes - Brand
MagnaFlow
Product Attributes - Manufacturer's Part Number
4551642
Product Attributes - Part Type
Catalytic Converters
Product Attributes - Product Line
MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converters
Product Attributes - UPC
888563153827
Product Attributes - Inlet Quantity
1
Product Attributes - Inlet Diameter (in.)
2.50 in.
Product Attributes - Converter Inlet Attachment
Stock flange
Product Attributes - Outlet Quantity
1
Product Attributes - Outlet Diameter (in.)
3.00 in.
Product Attributes - Converter Outlet Attachment
Slip fit
Product Attributes - Converter Case Material
Stainless steel
Product Attributes - Converter Substrate Material
Ceramic substrate
Product Attributes - Converter Overall Length (in.)
53.00
Product Attributes - Converter Style
3-way
Product Attributes - Remanufactured
No
Product Attributes - AIR Tube
No
Product Attributes - Heat Shield
No
Product Attributes - Quantity
Sold individually.
Product Attributes - CARB EO Number(s)
D-193-145
Product Attributes - Emissions
California EO Approved

Reference Information

Brand Name/s Magnaflow
StreetFX SKU mag4551642
SFX Item ID 4289820
Supplier Item Code 4289820
Manufacturer SKU 4551642
Manufacturer UPC 888563153827
Alternative References MFL4551642, MPE-4551642, 6.0L

Brochures

Compatibility

Application Data
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelBASE
    Beginning Year2003
    Ending Year2003
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeU
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLS
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionLeft
    Engine VIN CodeG
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD CLASSIC
    SubmodelLT
    Beginning Year2007
    Ending Year2007
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionLeft
    Engine VIN CodeU

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