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MagnaFlow Direct Fit Catalytic Converter 2012-2016 Buick LaCrosse/ 2012-2015 Buick Regal 2.4

SKU: MAG21-177

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow Direct Fit Catalytic Converter 2012-2016 Buick LaCrosse/ 2012-2015 Buick Regal 2.4

SKU: MAG21-177

Catalytic Converters

MAG Converter Direct Fit...

A$1,085.85
LAST ONE! Est Ship 3-5 days. LAST ONE! This is the last unit at our distribution centre. Contact us if you need more. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-177. 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 21-177 interchanges with OE parts 13229529, 20912670, 20960849, 20973114, 20991687, 22935121, 22935125. 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 21-177. 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 2011-2015 Buick Regal, 2010-2016 Buick LaCrosse, and more, this direct-fit catalytic converter also interchanges with OE parts 22935121 and 22935125, among others. 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
  • Mandrel Bent Tubing Retains Oem-Like Design And Geometry
  • Torca Accuseal Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force
  • OE-Sized Barbed Exhaust Hangers Made From Corrosion-Resistant 410 Stainless Steel
  • 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
  • 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

Product Details

Air Tube Adaptable:No
Air Tube Count:0
Body Height:4
Body Length:9.125
Body Material:Stainless Steel
Body Shape:Round
Body Type:Spun
Body Width:4.000 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
Grade Type:Regular
Hangers Included:Yes
Heat Shield Attached:No
Heat Shield Material:None
Inlet Attachment:Bolt-On
Inlet Diameter:2.25
Inlet Gasket Included:No
Inlet Inside Diameter:2.25
Inlet Mounting Hardware Included:No
Inlet Quantity:1
Inlet Type:Bolt-On
Main Piping Diameter:2.25
Material:Stainless Steel
Mounting Hardware Included:Yes
Outlet Attachment:Bolt-On
Outlet Diameter:2.25
Outlet Gasket Included:No
Outlet Inside Diameter:2.25
Outlet Mounting Hardware Included:No
Outlet Outside Diameter:2.250 in.
Outlet Quantity:1
Outlet Type:Bolt-On
Overall Length:38
Oxygen Sensor Location:Pre Converter
Part Number:mag21-177
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
Title:MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 21-177
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 22:26:20

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
  • 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
  • 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
  • Torca Accuseal Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force
  • 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
21-177
Product Attributes - Part Type
Catalytic Converters
Product Attributes - Product Line
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converters
Product Attributes - UPC
888563156866
Product Attributes - Inlet Quantity
1
Product Attributes - Inlet Diameter (in.)
2.25 in.
Product Attributes - Converter Inlet Attachment
Stock flange
Product Attributes - Outlet Quantity
1
Product Attributes - Outlet Diameter (in.)
2.25 in.
Product Attributes - Converter Outlet Attachment
Stock flange
Product Attributes - Converter Case Material
Stainless steel
Product Attributes - Converter Substrate Material
Ceramic substrate
Product Attributes - Converter Overall Length (in.)
38.13
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 mag21-177
SFX Item ID 4286938
Supplier Item Code 4286938
Manufacturer SKU 21-177
Manufacturer UPC 888563000000
Alternative References mpe-21-177, MFL21-177

Compatibility

Application Data
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelBASE
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelBASE
    Beginning Year2012
    Ending Year2016
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCONVENIENCE
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCONVENIENCE
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCX
    Beginning Year2010
    Ending Year2010
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCX
    Beginning Year2011
    Ending Year2011
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Application NotesExcluding Partial Zero Emissions Vehicles (PZEV)
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCXL
    Beginning Year2011
    Ending Year2011
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Application NotesExcluding Partial Zero Emissions Vehicles (PZEV)
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelCXL
    Beginning Year2011
    Ending Year2011
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Application NotesExcluding Partial Zero Emissions Vehicles (PZEV)
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelLEATHER
    Beginning Year2012
    Ending Year2016
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelLEATHER
    Beginning Year2012
    Ending Year2016
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelPREMIUM
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelLACROSSE
    SubmodelPREMIUM
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year2012
    Ending Year2012
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeK
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year2012
    Ending Year2014
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year2014
    Ending Year2014
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year2015
    Ending Year2015
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeK
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelBASE
    Beginning Year2015
    Ending Year2015
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeK
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelCXL
    Beginning Year2011
    Ending Year2011
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelCXL
    Beginning Year2011
    Ending Year2011
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeC
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelPREMIUM
    Beginning Year2013
    Ending Year2015
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeBUICK
    ModelREGAL
    SubmodelPREMIUM
    Beginning Year2014
    Ending Year2015
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainAWD
    Catalytic Converter PositionRear, Catalytic Converter
    Engine VIN CodeR
  • UniversalNo
    MakeCHEVROLET
    ModelIMPALA
    SubmodelECO
    Beginning Year2014
    Ending Year2014
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Application NotesExcluding Partial Zero Emissions Vehicles (PZEV)
    Engine VIN CodeR
  • UniversalNo
    MakeCHEVROLET
    ModelMALIBU
    SubmodelECO
    Beginning Year2013
    Ending Year2014
    Engine TypeL4
    Liter2.4
    CID145
    CC2384
    Engine FamilyGM Gas/Electric hybrid 4-cylinder
    Engine Size2.4L/145
    DrivetrainFWD
    Catalytic Converter PositionRear, Catalytic Converter
    Application NotesExcluding Partial Zero Emissions Vehicles (PZEV)
    Engine VIN CodeR

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