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MagnaFlow Direct Fit Catalytic Converter 2012-2017 Grand Cherokee V8 6.4 OEM Underbody

SKU: MAG21-578

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow Direct Fit Catalytic Converter 2012-2017 Grand Cherokee V8 6.4 OEM Underbody

SKU: MAG21-578

Catalytic Converters

MAG Converter Direct Fit...

A$1,954.59
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.
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Description

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-578. 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. This Direct-Fit Catalytic Converter is designed to fit the 2012-2019 Jeep Grand Cherokee 6.4L. MagnaFlow 21-578 includes (1) Gasket and interchanges with OE parts 5181 677AC, 5181 677AD, 5181 677AE, 5181 677AF, 5181 677AG, 5181 677AH, 5181 677AI. 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 21-578. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed specifically for the 2012-2019 Jeep Grand Cherokee and interchanges with OE parts 5181 677AI and 5181 677AC, 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
  • 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 Material:Stainless Steel
CARB Executive Order Number:Not Applicable
California Air Resources Board (CARB) Certified:No
Catalytic Converter Air Tube Adapter:No
Clamps Included:No
Core Substrate Material:Ceramic
Description:OEM Grade Direct-Fit Catalytic Converter
Finish:Stainless Steel
Grade Type:Regular
Hangers Included:No
Heat Shield Attached:No
Inlet Gasket Included:No
Inlet Mounting Hardware Included:No
Inlet Type:Bolt-On
Material:Stainless Steel
Outlet Gasket Included:No
Outlet Mounting Hardware Included:No
Outlet Type:Bolt-On
Overall Length:45.000 in.
Oxygen Sensor Location:Midbed
Part Number:mag21-578
Prop 65 Y/N:No
Sensor Port Count:1
Series:OEM Grade
Substrate Material:Ceramic
Subtitle:Federal / EPA Compliant
Title:MagnaFlow 2012-2019 Jeep Grand Cherokee OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
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 22:22:41

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, 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
21-578
Product Attributes - Part Type
Catalytic Converters
Product Attributes - Product Line
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converters
Product Attributes - UPC
888563179193
Product Attributes - Inlet Quantity
1
Product Attributes - Inlet Diameter (in.)
Stock in.
Product Attributes - Converter Inlet Attachment
Stock flange
Product Attributes - Outlet Quantity
1
Product Attributes - Outlet Diameter (in.)
Stock 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.)
45.00
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.

Reference Information

Brand Name/s Magnaflow
StreetFX SKU mag21-578
SFX Item ID 4289196
Supplier Item Code 4289196
Manufacturer SKU 21-578
Manufacturer UPC 888563179193
Alternative References mpe-21-578, MFL21-578

Compatibility

Application Data
  • UniversalNo
    MakeJEEP
    ModelGRAND CHEROKEE
    SubmodelSRT
    Beginning Year2013
    Ending Year2019
    Engine TypeV8
    Liter6.4
    CID392
    CC6424
    Engine FamilyMopar Hemi Gen III
    Engine Size6.4L/392
    DrivetrainAWD
    Catalytic Converter PositionLeft, Catalytic Converter
    Engine VIN CodeJ
  • UniversalNo
    MakeJEEP
    ModelGRAND CHEROKEE
    SubmodelSRT8
    Beginning Year2012
    Ending Year2015
    Engine TypeV8
    Liter6.4
    CID392
    CC6424
    Engine FamilyMopar Hemi Gen III
    Engine Size6.4L/392
    DrivetrainAWD
    Catalytic Converter PositionLeft, Catalytic Converter
    Engine VIN CodeJ

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