MagnaFlow OEM Grade Primary Direct-Fit Catalytic Converter - Mercedes-Benz E400 2015-2017

This MagnaFlow OEM Grade converter is the primary catalyst for the E400 3.0L and installs with the proper tools, no cutting or welding required. The 23.25 in assembly takes a 2.25 in inlet and a 2 in outlet, and MagnaFlow replicates the OE spun body so a single laser fusion weld replaces the seams where leaks usually start, while the compact low-mass shell reaches light-off temperature faster for better thermal efficiency. Tubing is high-strength 16 gauge 409 stainless steel with mandrel bends and 308 stainless steel MIG welds over a ceramic substrate. The housing carries two oxygen sensor ports, pre-converter and midbed, matching the factory sensor layout so the check engine light stays off, and four mounting nuts are supplied. It is built to meet Federal EPA emissions requirements and is not legal for sale or installation in California, Colorado or New York.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy