Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

MagnaFlow 04-05 Chevrolet Trailblazer 4.2L Direct Fit Converter

SKU: MAG5451217

Catalytic Converters

MAG Converter Direct Fit...

MagnaFlow 04-05 Chevrolet Trailblazer 4.2L Direct Fit Converter

SKU: MAG5451217

Catalytic Converters

MAG Converter Direct Fit...

A$2,883.07
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.

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

MagnaFlow 04-05 Chevrolet Trailblazer 4.2L Direct Fit Converter

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5451217. 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 5451217 includes (1) Donut Gasket. 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 5451217. 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 2004-2005 Chevrolet Trailblazer, 2004-2005 GMC Envoy, 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.

Additional Application Notes
• 2.5 in. Tubing; Stainless Steel; L-46.875 in. Overall; Post Converter Oxygen Sensor;CARB E.O. D-193-143
• Certification Level : LEV2 LEV 2.5 in. Tubing; Stainless Steel; L-46.875 in. Overall; Post Converter Oxygen Sensor;CARB E.O. D-193-143
• Certification Level : LEV2 LEV

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 05:13:37

Data: v4.2 - Upd: 2026-11-08 18:15:37

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
  • 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
  • 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 Material:Stainless Steel
Body Type:Spun
CARB Executive Order Number:D-193-143
Catalytic Converter Air Tube Adapter:Not Air Tube Kit Adaptable
Clamp Included:No
Clamps Included:No
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 Type:Bolt-On
Inlet Attachment:Bolt-On
Inlet Gasket Included:Yes
Inlet Mounting Hardware Included:No
Inlet Type:Bolt-On
Main Piping Diameter:2.500 in.
Material:Stainless Steel
Mounting Hardware Included:Yes
Outlet Attachment Type:Bolt-On
Outlet Attachment:Bolt-On
Outlet Gasket Included:No
Outlet Mounting Hardware Included:No
Outlet Type:Bolt-On
Overall Length:48.5
Oxygen Sensor Location:Post Converter
Part Number:mag5451217
Pipe Material:Stainless Steel
Sensor Port Count:1
Substrate Material: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 mag5451217
SFX Item ID 4290078
Accounting SKU mag-5451217
Manufacturer SKU 5451217
Manufacturer UPC 888563143217
Alternative References 5451217, MFL5451217, MPE-5451217

Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Buick, Chevy, GMC, Isuzu, Oldsmobile, 4.2L, 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 Number5451217
Part TypeCatalytic Converters
UPC888563143217
Inlet Quantity1
Converter Inlet AttachmentStock flange
Outlet Quantity1
Converter Outlet AttachmentStock flange
Converter Case MaterialStainless steel
Converter Substrate MaterialCeramic substrate
Converter Overall Length (in.)46.88
Converter Style3-way
RemanufacturedNo
AIR TubeNo
Heat ShieldNo
QuantitySold individually.
CARB EO Number(s)D-193-143

Manufacturer Attributes
Air Tube Count 0
Sensor Port Count 1
Overall Length 48.5
Inlet Type Bolt-On
Outlet Type Bolt-On
Substrate Material Ceramic
Clamps Included No
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 Post Converter
Grade Type Regular
Universal Or Specific Fit Specific
Body Type Spun
Finish Stainless Steel
Tube Material Stainless Steel
Body Material Stainless Steel
Hangers Included Yes
Inlet Gasket Included Yes
CARB Executive Order Number D-193-143
Product Class Catalytic Converter
Product Outline Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
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
Simplifies installation with essential gaskets and hardware being included in the box
Durable 308 stainless steel MIG welds
Vehicle Brief Catalytic Converter

Compatibility

Loading compatibility information...

Keep shopping

More from Magnaflow