MagnaFlow Direct Fit Catalytic Converter 99-03 Lexus RX300 3.0L Rear - 51318

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MagnaFlow Direct Fit Catalytic Converter 99-03 Lexus RX300 3.0L Rear - 51318

Type: Exhaust, Mufflers & Tips Catalytic Converter Direct Fit

Brand: Magnaflow

SKU: mag51318

availability: Special order

Ships By (est.): August 4, 2026

Not CARB compliant. Not legal for sale or use in California on emissions-controlled vehicles.

$539.00

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Semi-Direct-Fit Catalytic Converter 51318. 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 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 1999-2003 Lexus RX300 3.0L & 2001-2003 Toyota Highlander 3.0L. MagnaFlow 51318 includes (1) Donut Gasket and interchanges with OE parts 17420-20130, 17420-20250, 17420-20290. 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. MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51318 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate...

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MagnaFlow Direct Fit Catalytic Converter 99-03 Lexus RX300 3.0L Rear - 51318

SKU: mag51318

Product Info

MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51318 helps keep the check engine light off. 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. Designed to fit the 1999-2003 Lexus RX300 and 2001-2003 Toyota Highlander, this direct-fit catalytic converter also interchanges with OE parts 17420-20130 and 17420-20250, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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.

Not legal for sale or installation in California; Colorado or New York.

Features & Benefits

Your trusted source for EPA-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
Your Trusted Source For EPA-Compliant Catalytic Converters
Mandrel Bent Tubing Retains Oem-Like Design And Geometry
Durable 308 stainless steel MIG welds

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In Stock Items:
In stock items typically ship within 1-3 business days. Most items arrive within 2 business days, but there are situations where it may take up to 5 business days.

Special Order Items:
Special order and out of stock items are product-specific and lead times can vary. Please e-mail us if you are looking for an ETA / Lead Time on a specific product. Special order orders are subject to cancellation if the vendor cannot provide any ETA.

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To start the return process, please e-mail sales@allianceracing.com

Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

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To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

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MagnaFlow Direct Fit Catalytic Converter 99-03 Lexus RX300 3.0L Rear - 51318

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