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MagnaFlow 02-06 Sierra 2500HD 6.0L Direct Fit Converter

SKU: MAG21-989

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow 02-06 Sierra 2500HD 6.0L Direct Fit Converter

SKU: MAG21-989

Catalytic Converters

MAG Converter Direct Fit...

A$638.72
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-989. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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. MagnaFlow 21-989 includes (1) Flange Gasket and interchanges with OE parts 15070411, 15103202, 15113074, 15147363, 15199832, 15798955. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Overview

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-989. 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. Designed to fit the 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 GMC Sierra 2500 HD, and more, this direct-fit catalytic converter also interchanges with OE parts 15798955 and 15070411, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.


Features and Benefits

  • Expertly Crafted To Replicate Oem-Like Flow Dynamics/Maintaining Factory Performance And Fuel Efficiency
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Simplifies Installation With Essential Gaskets And Hardware Being Included In The Box
  • Your Trusted Source For EPA-Compliant Catalytic Converters
  • High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
  • Durable 308 Stainless Steel Mig Welds
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency

Product Details

Air Tube Adaptable:No
Air Tube Count:0
Body Height:5.000 in.
Body Length:8.750 in.
Body Material:Stainless Steel
Body Shape:Round
Body Type:Spun
Body Width:5.000 in.
CARB Executive Order Number:Not Applicable
California Air Resources Board (CARB) Certified:No
Catalytic Converter Air Tube Adapter:No
Clamp Included:No
Clamps Included:No
Converter Quantity:1
Core Substrate Material:Ceramic
Description:OEM Grade Direct-Fit Catalytic Converter
Finish:Stainless Steel
Gasket Included:Yes
Gasket Or Seal Included:Yes
Grade Type:Regular
Hanger Included:No
Hangers Included:No
Heat Shield Attached:No
Heat Shield Material:None
Inlet Attachment Type:Bolt-On
Inlet Attachment:Bolt-On
Inlet Diameter:3.000 in.
Inlet Gasket Included:Yes
Inlet Inside Diameter:3.000 in.
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:23.250 in.
Oxygen Sensor Location:Post Converter
Part Number:mag21-989
Pipe Material:Stainless Steel
Prop 65 Y/N:No
Sensor Port Count:1
Series:OEM Grade
Substrate Material:Ceramic
Substrate:Ceramic
Subtitle:Federal / EPA Compliant Direct-Fit Catalytic Converter
Subtitles:Federal / EPA Compliant
Title:MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 21-989
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: 2026-10-15 19:40:39

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
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Simplifies Installation With Essential Gaskets And Hardware Being Included In The Box
  • Your Trusted Source For EPA-Compliant Catalytic Converters
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last

Specifications

Product Attributes - Brand
MagnaFlow
Product Attributes - Manufacturer's Part Number
21-989
Product Attributes - Part Type
Catalytic Converters
Product Attributes - Product Line
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converters
Product Attributes - UPC
888563147994
Product Attributes - Inlet Quantity
1
Product Attributes - Inlet Diameter (in.)
3.00 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.)
23.25
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.

Reference Information

Brand Name/s Magnaflow
StreetFX SKU mag21-989
SFX Item ID 4289539
Supplier Item Code 4289539
Manufacturer SKU 21-989
Manufacturer UPC 888563147994
Alternative References MFL21-989, MPE-21-989, 2500HD, 6.0L

Brochures

Compatibility

Application Data
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2001
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2002
    Ending Year2005
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2002
    Ending Year2005
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2002
    Ending Year2005
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelWT
    Beginning Year2002
    Ending Year2005
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSL
    Beginning Year2003
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelWT
    Beginning Year2003
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelWT
    Beginning Year2003
    Ending Year2006
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2001
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2004
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2004
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2002
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2002
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLT
    Beginning Year2001
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2001
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500
    SubmodelSLE
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelWT
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    Liter6.0
    CID364
    CC5967
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelWT
    Beginning Year2002
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLE
    Beginning Year2002
    Ending Year2006
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    Liter6.0
    CID364
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeU
    CC5967
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2002
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    Drivetrain4WD
    Catalytic Converter PositionRight
    Engine VIN CodeG
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2001
    Ending Year2002
    Engine TypeV8
    Liter8.1
    CID496
    CC5967
    Engine FamilyChevy big block Gen VII
    Engine Size8.1L/496
    DrivetrainRWD
    Catalytic Converter PositionRight
    Engine VIN CodeG

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