AP Exhaust 774078 Catalytic Converter with Integrated Exhaust Manifold - Right

OE-Style Catalytic Converter Manifold

AP Exhaust 774078 is a catalytic converter with integrated exhaust manifold for the right side of select Toyota applications. It is built to OE dimensions for direct-fit replacement and is engineered for California emissions compliance on listed vehicles.

Key Features

• Part type: catalytic converter with integrated exhaust manifold
• Right-side fitment for listed Toyota models
• Direct-fit design for OE-style installation and alignment
• Built to exact OE dimensions for proper fitment
• California emissions compliant on covered applications, EO D-798-14
• AP Exhaust Brand Line: 3TYXT04.0FFP

Product Details

AP Exhaust 774078 uses ARISTO substrate chemistry and modern manufacturing methods to support efficient converter loading while keeping the unit sized and shaped to match original equipment. The result is a replacement exhaust manifold catalytic converter that follows factory fitment requirements for the right side of the exhaust system. This part number 774078 is listed for 2003-2009 Toyota 4Runner, 2005-2008 Toyota Tacoma, 2005-2006 Toyota Tundra, and 2007-2009 Toyota FJ Cruiser applications with California emissions coverage where noted.

The 3TYXT04.0FFP product line is AP Exhaust’s OE-fit converter family for specific Toyota platforms, combining exact dimensional control with emissions-focused substrate design. This helps maintain the original exhaust routing and converter placement on the vehicle.

Common Replacement Reasons

• Failed catalytic converter efficiency codes
• Damaged or leaking exhaust manifold assembly
• Restricted exhaust flow from internal substrate wear
• Broken flange or mounting issues at the right-side manifold
• Emissions test failure on covered Toyota applications

Installation Notes

Verify the vehicle year, model, engine/emissions configuration, and right-side location before ordering. This unit is a direct-fit replacement, but the exhaust manifold and converter assembly should be matched to the exact application listed for the Toyota 4Runner, Tacoma, Tundra, or FJ Cruiser. Check all mating surfaces, sensors, and exhaust connections during installation.

Quality Assurance

AP Exhaust states that this converter family is manufactured to OE dimensions using automated production and welding processes for consistent fitment and build quality. California emissions compliance is listed for the covered applications under EO Number D-798-14.