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MagnaFlow 2004 Jeep Liberty 3.7L Direct Fit Converter

SKU: MAG4551582

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow 2004 Jeep Liberty 3.7L Direct Fit Converter

SKU: MAG4551582

Catalytic Converters

MAG Converter Direct Fit...

A$3,011.73
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

MagnaFlow 2004 Jeep Liberty 3.7L Direct Fit Converter

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551582. 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 2004 Jeep Liberty 3.7L. MagnaFlow 4551582 includes (1) Donut Gasket, (1) Torca Clamp and interchanges with OE parts 5212 8599AB, 5212 8599AC, 5212 8599AD, 5212 8599AE, 5212 8599AF, 5212 8599AG, 5212 8599AI, 5212 8599AJ. 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.

Additional Information

Magnaflow California Direct-Fit Catalytic Converter

Product Overview

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551582. 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 specifically for the 2004 Jeep Liberty and interchanges with OE parts 5212 8599AJ and 5212 8599AB, among others. 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.

Additional Application Notes
• Certification Level : LEV1 ULEV 2 in. Tubing; 2.25 in. Inlet/2.5 in. Outlet; W-4 in.; L-54.375 in. Overall; Not Air Tube Kit Adaptable;CARB E.O. D-193-145

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:13:08

Data: v4.2 - Upd: 2026-11-08 18:16:07

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
  • Precision Stamped Collector Design For Optimal Exhaust Flow; Engine Efficiency And Fuel Economy
  • 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

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Air Tube Adaptable:No
Air Tube Count:0
Body Height:4
Body Length:11.250 in.
Body Material:Stainless Steel
Body Shape:Round
Body Type:Spun
Body Width:4.000 in.
CARB Executive Order Number:D-193-145
Catalytic Converter Air Tube Adapter:Not Air Tube Kit Adaptable
Clamp Included:Yes
Clamps Included:Yes
Converter Quantity:1
Core Substrate Material:Ceramic
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:Bolt-On;Clamp-On
Inlet Diameter:2.25;2
Inlet Gasket Included:Yes
Inlet Inside Diameter:2.25;2
Inlet Mounting Hardware Included:No
Inlet Quantity:2
Inlet Type:Bolt-On;Clamp-On
Main Piping Diameter:2.000 in.
Material:Stainless Steel
Mounting Hardware Included:Yes
Outlet Attachment Type:Bolt-On
Outlet Attachment:Bolt-On
Outlet Diameter:2.500 in.
Outlet Gasket Included:No
Outlet Inside Diameter:2.5
Outlet Mounting Hardware Included:No
Outlet Outside Diameter:2.500 in.
Outlet Quantity:1
Outlet Type:Bolt-On
Overall Length:54.375 in.
Oxygen Sensor Location:Pre and Post Converter
Part Number:mag4551582
Pipe Material:Stainless Steel
Sensor Port Count:2
Substrate Material:Ceramic
Substrate:Ceramic
Subtitle:CARB Compliant Direct-Fit Catalytic Converter
Tube Material:Stainless Steel
Type:Direct-Fit
Universal Or Specific Fit:Specific

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Magnaflow, MagnaFlow Exhaust Products, MAGNAFLOW PERF EXHAUST, Magnaflow Performance
StreetFX SKU mag4551582
SFX Item ID 4289814
Accounting SKU mag-4551582
Manufacturer SKU 4551582
Manufacturer UPC 888563153568
Alternative References 4551582, MFL4551582, MPE-4551582

Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Left Position, 54.375 in. Overall Length, Jeep, 3.7L, Each

MagnaFlow California Grade CARB Compliant direct-fit catalytic converters comply with California Air Resources Board (CARB) emissions regulations, which require more precious metals and rigorous testing, plus the direct-fit means an easier bolt-on install for you. Choose the perfect fit for your vehicle.

Features include:
• Stainless steel construction
• CNC-precision robotic manufacturing
• Limited 5-year/50,000 mile warranty

Product Attributes
BrandMagnaFlow
Manufacturer's Part Number4551582
Part TypeCatalytic Converters
UPC888563153568
Inlet Quantity2
Inlet Diameter (in.)2.00-2.25 in.
Converter Inlet AttachmentStock flange/Slip fit
Outlet Quantity1
Outlet Diameter (in.)2.50 in.
Converter Outlet AttachmentStock flange
Converter Case MaterialStainless steel
Converter Substrate MaterialCeramic substrate
Converter Overall Length (in.)54.38
Converter Style3-way
RemanufacturedNo
AIR TubeNo
Heat ShieldNo
QuantitySold individually.
CARB EO Number(s)D-193-145

Manufacturer Attributes
Air Tube Count 0
Outlet Quantity 1
Body Length 11.25
Inlet Quantity 2
Sensor Port Count 2
Outlet Inside Diameter 2.5
Body Height 4
Body Width 4
Overall Length 54.375
Outlet Type Bolt-On
Inlet Type Bolt-On;Clamp-On
Substrate Material Ceramic
Heat Shield Attached No
Inlet Mounting Hardware Included No
Outlet Gasket Included No
Outlet Mounting Hardware Included No
Air Tube Adaptable No
Oxygen Sensor Location Pre and Post Converter
Grade Type Regular
Body Shape Round
Universal Or Specific Fit Specific
Body Type Spun
Finish Stainless Steel
Tube Material Stainless Steel
Body Material Stainless Steel
Clamps Included Yes
Hangers Included Yes
Inlet Gasket Included Yes
CARB Executive Order Number D-193-145
Product Class Catalytic Converter
Product Outline Torca AccuSeal® Exhaust Clamps provide a full 360-degree equally distributed clamping force preventing pipe distortion while creating a complete seal and maintaining serviceability
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
High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
Precision stamped collector design for optimal exhaust flow, engine efficiency, and fuel economy
Simplifies installation with essential gaskets and hardware being included in the box
Durable 308 stainless steel MIG welds
Vehicle Brief Catalytic Converter

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