MagnaFlow California Grade Left Catalytic Converter - Ford F-150 3.7L 2011-2014 - 5551157

MagnaFlow's California Grade converter is a CARB compliant replacement for the driver side converter on the 3.7L V6 and bolts into the factory location without cutting or welding. A 2.25 in flange inlet feeds a 2 in pipe connection outlet across a 28.125 in assembly with a 9.25 in round spun bed, and the 16 gauge 409 stainless steel tubing is joined with 308 stainless steel MIG welds over a ceramic substrate. Two ports serve the pre converter and midbed oxygen sensors. CARB Executive Order D-193-197 makes it legal for installation in all 50 states.

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