Exhaust Manifold Catalytic Converter for Toyota Highlander (2005-2007) 2.4L

EPA-Compliant Exhaust Manifold Catalytic Converter for 2005-2007 Toyota Highlander

Direct replacement catalytic converter engineered to resolve OEM exhaust restrictions and clear persistent catalyst efficiency codes.

The Stock Highlander Exhaust Manifold Bottleneck

The factory catalytic converter on the XU20 Toyota Highlander equipped with the 2.4L 2AZ-FE is notoriously susceptible to premature substrate degradation and structural thermal fatigue. Over thousands of heat cycles, the restrictive OEM ceramic matrix becomes clogged with carbon deposits, creating severe exhaust backpressure. This bottleneck not only smothers engine responsiveness and impacts fuel economy, but it frequently triggers frustrating P0420 Catalyst System Efficiency codes (MIL). Furthermore, the factory manifold is prone to hairline cracks along the flange welds due to localized heat soak, leading to exhaust leaks, ticking noises under acceleration, and compromised O2 sensor readings.

The Engineering Solution

This upgraded exhaust manifold catalytic converter is precision-engineered from heavy-duty stainless steel to eliminate the structural weaknesses of the stock unit. Utilizing an advanced 600-CPSI (cells per square inch) ceramic honeycomb substrate, it maximizes internal surface area for optimal catalysis without sacrificing volumetric exhaust flow rates. The precision-engineered precious metal loading ensures highly efficient conversion of noxious exhaust gases, effectively preventing MIL issues and meeting strict Federal EPA standards. Measuring 21 inches in overall length, the unit features a robust 5-bolt welded inlet flange and a 2-bolt welded outlet flange with a gasket stub for a precise, leak-free installation. The stainless steel outer shell provides superior heat retention for rapid catalyst light-off while offering exceptional resistance to rust, corrosion, and extreme under-hood temperatures.

Technical Specifications

Compatibility

• 2005 Toyota Highlander 2.4L
• 2006 Toyota Highlander 2.4L
• 2007 Toyota Highlander 2.4L

The Toyota Reliability Standard

Engineered for the daily demands of SUV commuting and light hauling, this heavy-duty converter restores the uncompromising reliability and quiet operation expected from the Highlander platform, keeping your 2AZ-FE running efficiently and CEL-free.