Exhaust Catalytic Converters

Magnaflow

MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5491231

$1,011.00

SKU: M001 5491231

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 5491231

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5491231. 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 2010-2012 Toyota 4Runner and 2010-2011 Toyota FJ Cruiser. 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.

Features:

  • 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
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds

Magnaflow California Direct-Fit Catalytic Converter

MIA's Description

This direct-fit catalytic converter is designed to replace the factory unit on 2010-2012 Toyota 4Runner (and compatible with 2010-2011 Toyota FJ Cruiser), providing CARB-compliant emissions control for use in California and other CARB-regulated states. Built by MagnaFlow to match OE dimensions and flow characteristics, this converter uses a spun-body design with a single laser fusion weld and mandrel-bent tubing to maintain proper exhaust geometry. Constructed from corrosion-resistant stainless steel, it includes gaskets and hardware for a proper seal and installation without cutting or welding when using the correct tools. The compact, low-mass design supports efficient thermal behavior while helping avoid exhaust leaks when installed per vehicle requirements. This unit is intended for customers who want a reliable, CARB-approved replacement that fits and functions like the original equipment. Legal for sale in all 50 states including California, Colorado, New York and Maine. Installation is permitted only if the vehicle’s Executive Order number and Engine Family Number appear in this converter’s CARB Executive Order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMagnaflow
Part NumberM001 5491231

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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