Catalytic Converter for Toyota Prius (2016-2019) 1.8L Rear Left & Right

Direct-Fit Catalytic Converter for 2016-2019 Toyota Prius

What it Does: The catalytic converter replaces the depleted or damaged factory emissions assembly on the 2016-2019 Prius to restore precise backpressure and resolve persistent P0420/P0430 efficiency trouble codes.

The Stock Toyota Prius Thermal Degradation and Substrate Breakdown

In the fourth-generation hybrid powertrain, frequent internal combustion cycling causes rapid thermal transitions. When the 2ZR-FXE repeatedly switches between electric and combustion modes, unburnt fuel vapor and sudden exhaust quenching degrade the OEM ceramic monolith over time. This thermal shock leads to washcoat micro-fractures, catalyst passivation, reduced oxygen storage capacity, and restrictive flow bottlenecks that compromise combined powertrain efficiency.

The Engineering Solution

Manufactured with a high-grade stainless steel shell and an advanced ceramic substrate washcoated with precious metal loadings, this unit restores OEM-level conversion rates without flow restriction. Automated robotic welds seal the collector and flange junctions against leaks, while mandrel-formed geometry preserves laminar flow dynamics. The direct-bolt assembly bolts directly up to existing hangers and manifold flanging, including replacement seals and hardware for a gas-tight seal that restores downstream O2 sensor readouts to factory spec.

Technical Specifications

Compatibility

• 2016-2019 Toyota Prius (Two, Three, Four, Touring) 1.8L Hybrid
• 2016-2019 Toyota Prius Two Eco 1.8L Hybrid

Frequently Asked Questions

Does this fit the XW50 Prius?
Yes, this is a direct fit for the 2016-2019 Toyota Prius equipped with the 2ZR-FXE engine.

Will this direct-fit unit clear a recurring P0420 catalytic efficiency code?
Yes, its premium active substrate restores the OEM oxygen storage capacity needed to clear downstream sensor fault codes.

The Toyota Precision Standard

Engineered to match strict JDM emissions calibration and thermal recovery demands, this unit ensures immediate closed-loop fuel trimming without check-engine lights.