AP Exhaust 775444 Catalytic Converter - Rear

Direct-Fit Rear Catalytic Converter

AP Exhaust 775444 is a rear catalytic converter for select 2004-2006 Ford Ranger and Mazda B-series trucks with California emissions requirements. It is built to OE dimensions for direct-fit replacement and consistent exhaust system alignment.

• Direct-fit rear catalytic converter for California emissions applications
• Built to exact OE dimensions for proper fitment
• Uses AP Exhaust ARISTO substrate chemistry for efficient catalyst loading
• Manufactured with automated workstations, spinner welding, and high-speed production lines
• Fits rear position applications only

Product Line Details

The AP Exhaust 4FMXT03.02KA product line focuses on OE-style fitment and efficient converter construction. AP Emissions Technologies uses advanced manufacturing controls to keep dimensions consistent and support dependable installation on the specified Ford Ranger and Mazda B3000 applications.

Vehicle Fitment

• Fits 2006 Ford Ranger, rear. Direct Fit - California; 6FMXT04.02KM, 6FMXT04.02E2, or 6FMXT03.02KA.
• Fits 2006 Mazda B3000, rear. Direct Fit - California; 6FMXT03.02KA.
• Fits 2006 Mazda B4000, rear. Direct Fit - California; 6FMXT04.02E2 or 6FMXT04.02KM.
• Fits 2005 Ford Ranger, rear. Direct Fit - California; 5FMXT04.02E2, 5FMXT04.02KM, or 5FMXT03.02KA.
• Fits 2005 Mazda B3000, rear. Direct Fit - California; 5FMXT03.02KA.
• Fits 2005 Mazda B4000, rear. Direct Fit - California; 5FMXT04.02E2 or 5FMXT04.02KM.
• Fits 2004 Ford Ranger, rear. Direct Fit - California; 4FMXT04.02KM, 4FMXT04.02K2, 4FMXT04.02E2, or 4FMXT03.02KA.
• Fits 2004 Mazda B3000, rear. Direct Fit - California; 4FMXT03.02KA.
• Fits 2004 Mazda B4000, rear. Direct Fit - California; 4FMXT04.02K2, 4FMXT04.02KM, or 4FMXT04.02E2.

What It Helps Address

• Failed rear catalytic converter emissions testing
• Check engine light concerns related to catalyst efficiency
• Restricted exhaust flow from a worn converter
• Fitment issues from a non-OE-shaped replacement part
• California emissions compliance replacement needs

Installation Notes

Verify the emissions label and existing converter code before ordering. This rear unit is specific to California emissions applications and must match the listed code for the vehicle. Professional installation is recommended to confirm proper exhaust alignment and sensor-related checks after replacement.

Quality Assurance

AP Exhaust uses controlled manufacturing processes and OE-dimension construction to support consistent fitment and converter efficiency. This part cross-references 6FMXT03.02KA and 4FMXT03.02KA for the same application.