Catalytic Converter for Honda Accord (2018-2022) 1.5L Front

Direct-Fit Front Catalytic Converter for 2018-2022 Honda Accord (CV1)

What it Does: The Front Catalytic Converter replaces the degraded primary exhaust catalyst on the 2018-2022 Accord to restore federal emissions compliance and eliminate restriction-related performance loss.

The Stock Honda Accord Catalyst Degradation

The factory downpipe catalytic converter on the CV1 platform is mounted directly downstream of the turbocharger discharge, subjecting the internal washcoat to sustained high-thermal cycling. Over time, thermal fatigue, oil blow-by, or subtle ignition misfires cause the factory ceramic core to disintegrate or sinter. This causes cell blockage, elevated exhaust backpressure, sulfur odors, and persistent diagnostic trouble codes like P0420 or P0430, while choking turbo spool and reducing fuel efficiency.

The Engineering Solution

Engineered as a direct bolt-on assembly for the turbocharged L15BE engine, this front catalytic converter features a heavy-gauge 409 stainless steel shell built to standard factory geometry. Internally, a dense ceramic honeycomb substrate is coated with an EPA-grade precious metal washcoat (platinum, palladium, rhodium) to efficiently oxidize hydrocarbons and carbon monoxide while reducing nitrogen oxides. Precision-machined 3-bolt flanges prevent warping and exhaust leaks, factory-located O2 sensor bungs accept OEM upstream and downstream sensors without harness modification, and an integrated heat shield guards the engine bay against radiant thermal soak.

What's Included

• 1 Catalytic Converter with Integrated Heat Shield
• Flange Gaskets
• Mounting Hardware

Technical Specifications

Compatibility

• 2018-2022 Honda Accord LX (1.5L Turbo)
• 2018-2022 Honda Accord Sport (1.5L Turbo)
• 2018-2022 Honda Accord EX (1.5L Turbo)
• 2018-2022 Honda Accord EX-L (1.5L Turbo)

Frequently Asked Questions & Fitment Warnings

Does this fit the CV1 Accord?

Yes, this is a direct fit for the 2018-2022 Honda Accord equipped with the L15BE 1.5L Turbo engine. Does not fit 2.0L Turbo (CV2) or 2.0L Hybrid (CV3) models; not legal for sale or use in CA, CO, NY, or ME on CARB-regulated vehicles.

Do I need to weld or cut pipes to install this converter?

No, this unit features factory-spec 3-bolt flanges and pre-positioned hangers for direct bolt-on installation using standard hand tools.

The Honda Standard

Restore the quiet performance, crisp low-end turbo response, and clean emissions delivery your turbocharged JDM platform demands without throwing sensor codes or sacrificing flow.