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Deal.ai › MagnaFlow
MagnaFlow
MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331

MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331

Best price now

$428.00at BB WheelsChecked 1 h ago

Compared across 14 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $428.00 at BB Wheels (checked Nov 12, 2026).
  • Checked at 14 stores.

Our take on the MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331

The MagnaFlow 23331 is a direct-fit catalytic converter for OBDII vehicles with Federal/EPA emissions systems. It bolts on with the included flange gasket and needs no cutting or welding, and its mandrel-bent stainless tubing and single laser-fusion weld are built to resist leaks and corrosion. It interchanges with OE part 3W1Z-5E212-GB and is designed to meet or exceed Federal EPA requirements. It suits owners replacing a failed converter on a federally registered vehicle who want an OE-style fit without fabrication; it is not legal for California or other CARB states.

Best forOwners of Federal/EPA-emissions vehicles with a failed converterDIY installers who want a bolt-on, no-weld fitDrivers replacing OE part 3W1Z-5E212-GBKeeping the check engine light off after a converter fault
Pros
  • Direct-fit, OE-style design with no cutting or welding
  • Mandrel-bent stainless steel tubing resists corrosion
  • Single laser-fusion weld reduces leak risk
  • Includes flange gasket for installation
  • Compact, low-mass body for thermal efficiency
  • 3D-scanned to match original equipment fit
Cons
  • Not legal for California or CARB-compliant states
  • Federal/EPA compliance only, not a universal part
  • Fit is vehicle-specific, so buyers must confirm their application
  • No hardware beyond the flange gasket included

MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331 prices at every store

  • BB WheelsNew

    In stock

    $428.00Checked 1 h ago
    Visit BB Wheels
  • AutoZoneNew

    In stock

    $428.99+ $4.99 shippingChecked 1 h ago
    Visit AutoZone
  • MagnaFlow ConvertersNew

    In stock

    $466.00Free shippingChecked 1 h ago
    Visit MagnaFlow Converters
  • WalmartNew

    In stock

    $466.00Free shippingChecked 1 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $466.00Checked 1 h ago
    Visit Amazon
  • etrailer.comNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit etrailer.com
  • Summit RacingNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit Summit Racing
  • eBayNew

    Availability unknownSold by xhaustshop

    $466.00Checked 1 h ago
    Visit eBay
  • CarParts.comNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit CarParts.com
  • AutoTalentNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit AutoTalent
  • CARiD.comNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit CARiD.com
  • Heeltoe AutomotiveNew

    Availability unknown

    $466.00Checked 1 h ago
    Visit Heeltoe Automotive
  • Advance Auto PartsNew

    Availability unknown

    $466.99Checked 1 h ago
    Visit Advance Auto Parts
  • Lethal PerformanceNew

    Availability unknown

    $534.00Checked 1 h ago
    Visit Lethal Performance

Also available at

  • MagnaFlow ConvertersCheck price at MagnaFlow Converters

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MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331 price history

Lowest price we've seen: $428.00 on Nov 13 at BB Wheels. Tracked across 14 stores since Nov 13.

What reviewers say

Owners of Federal-emissions vehicles generally report the 23331 bolts up like the original part and clears converter-related check engine codes. Complaints center on fitment confusion and the fact that it cannot be used in CARB states.

What people mention
  • FitmentMixedSome owners say it fits like the OE part; others report ordering the wrong application for their vehicle.
  • InstallationPraisedOwners say it installs with basic tools and no welding.
  • Check engine lightPraisedReviewers report the converter-related codes clear after installation.
  • Emissions legalityCriticisedBuyers note it is Federal/EPA only and not legal in California or CARB states.
  • Build qualityPraisedOwners describe the stainless steel body and welds as solid and corrosion resistant.

About the MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331

The MagnaFlow 23331 is an HM Grade direct-fit catalytic converter built to meet or exceed Federal emissions requirements set by the EPA. It complies with legal standards for OBDII Federally registered vehicles with Federal/EPA emission systems. It is designed to help keep the check engine light off.

The converter is made of highly corrosion-resistant stainless steel with free-flowing mandrel-bent tubing. It replicates the OE design and uses a single laser fusion weld, which greatly reduces the possibility of a leak. The compact, low-mass design allows for greater thermal efficiency. MagnaFlow used 3D scanning systems during development so the part fits and functions like the original equipment.

Installation requires no cutting or welding. The converter interchanges with OE part 3W1Z-5E212-GB.

Part number
MagnaFlow 23331
Grade
HM Grade
Type
Direct-fit catalytic converter
Material
Stainless steel
Tubing
Mandrel-bent
Emissions
Federal/EPA compliant
OE interchange
3W1Z-5E212-GB
Installation
No cutting or welding required
In the box
1 flange gasket

Questions and answers

Is the MagnaFlow 23331 legal in California?
No. It is Federal/EPA compliant only and is not legal for California or other CARB states. Check your state's rules before buying.
Does it fit my vehicle?
It is a direct-fit part built to replace OE 3W1Z-5E212-GB on Federal-emissions OBDII vehicles. Confirm your vehicle's emissions system and OE part number before ordering.
Do I need to weld it?
No. It bolts on using the included flange gasket, with no cutting or welding required.
What is in the box?
The converter and one flange gasket. No other hardware is included.
Will it turn off my check engine light?
It is designed to restore converter function and clear converter-related codes, but a light caused by another fault will not go away.
How is it different from a universal converter?
It replicates the OE design for a bolt-on fit, while universal converters require fabrication and welding.
Where is the MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331 cheapest?
At BB Wheels, for $428.00, as of our latest check.
Where can I buy the MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331?
14 stores we checked sell it, including BB Wheels, Amazon, AutoZone, MagnaFlow Converters, Walmart.

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Stores we've priced the MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter 23331 at

  • Walmart deals and prices

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