Exhaust System with Catalytic Converter for Honda Accord (2008-2012) 2.4L

Direct-Fit Exhaust System with Catalytic Converter for 2008-2012 Honda Accord (CP2)

What it Does: This complete exhaust and catalytic converter system replaces corroded factory piping on 2008-2012 Honda Accord CP2 K24 2.4L automatic sedans to stop leaks and clear P0420 codes.

The Stock Honda Accord Exhaust Failure

On eighth-generation CP2 sedans powered by the K24 2.4L engine, road salt and thermal cycling corrode the factory front flex pipe, underbody converter, intermediate pipe, and rear muffler concurrently. Once moisture breaches the braided flex mesh or flange welds, exhaust leaks skew downstream O2 sensor readings. Simultaneously, thermal shock fractures the aging ceramic substrate washcoat, dropping oxygen storage capacity and triggering a persistent P0420 catalyst efficiency fault code.

Common Symptoms of a Failing OEM Exhaust System

• Check Engine Light: Triggers P0420 faults when the degraded substrate fails to store oxygen.
• Leaks & Rattles: Hissing from torn flex pipe braiding and rattling from loose muffler baffles.
• Emissions Failure: Failed OBD-II inspections and sluggish response from restricted exhaust flow.

The Direct-Fit Stainless Exhaust Solution

Constructed from corrosion-resistant 409 stainless steel, this full assembly restores factory routing with smooth mandrel bends, stock-position O2 sensor bungs, and heavy-gauge flanges. Its direct-fit underbody converter utilizes a high-flow ceramic honeycomb substrate engineered to maintain OEM backpressure and quiet factory acoustics without drone. Every hanger rod aligns directly with stock chassis isolators, enabling a complete bolt-on repair on the CP2 chassis with zero cutting or welding.

What's Included

• 1 Front Pipe
• 1 Catalytic Converter
• 1 Intermediate Pipe
• 1 Muffler
• 1 Ring Gasket
• 2 Flange Gaskets
• 2 U-Clamps
• 2 Spring Bolts with Springs and Nuts

Technical Specifications

Compatibility

• 2008-2012 Honda Accord K24 2.4L 4-Cylinder (Automatic Sedan Only)

Frequently Asked Questions & Fitment Warnings

Does this fit the CP2 Accord?

Yes. This is a direct fit for the 2008-2012 Honda Accord equipped with the K24 2.4L engine. Fits automatic sedans only; excludes manual transmissions, coupes, and vehicles in CA, CO, NY, or ME.

Does this clear P0420 codes, and is the manifold converter included?

Yes, replacing a degraded underbody converter resolves P0420 faults. The manifold catalytic converter and O2 sensors are not included; reuse healthy factory units.

Are gaskets and mounting hardware included?

Yes. Ring gaskets, flange gaskets, U-clamps, and spring bolts are included for bolt-on installation without welding.

The Honda Precision Standard

Engineered for clean OBD-II readiness and corrosion resistance, this assembly keeps your K24 2.4L quiet and CEL-free. Restore factory flow efficiency without custom fabrication.