MagnaFlow Secondary Underbody Direct-Fit Catalytic Converter - Audi Q7 3.0L 2017-2019

This is the downstream underbody converter for the Q7 3.0, not the close-coupled unit at the manifold, and it serves the left bank. The shell and tubing are stainless steel over a ceramic substrate, spun to a round body 16.125 inches long, with a 2.5 inch inlet flange, a 2.25 inch outlet flange and a single midbed sensor port. It bolts in against the factory mounting points with no cutting or welding, and inlet and outlet gaskets plus outlet hardware come in the box. This is the federal EPA part.

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