Catalytic Converter for Ford F-450/F-550 (2013-2019) 6.8L Rear

Direct-Fit Rear Catalytic Converter for 2013-2019 Ford F-450,F-550 (Super Duty P473/P558)

What it Does: The Rear Catalytic Converter replaces the degraded factory emissions unit on the 2013-2019 Ford F-450/F-550 to eliminate P0420/P0430 diagnostic trouble codes and restore exhaust scavenging efficiency.

The Stock Ford F-450,F-550 Catalyst Degradation

Under continuous commercial duty cycles and extreme exhaust gas temperatures (EGTs) common to heavy towing, the factory catalytic converter on the 6.8L Triton V10 suffers from thermal fatigue and substrate breakdown. High backpressure, unburnt hydrocarbons from prolonged idling, and chronic vibration fatigue the ceramic washcoat, causing washcoat sintering, internal brick fracturing, and restricted exhaust throughput that triggers persistent catalyst-efficiency trouble codes like P0420 and P0430.

The Engineering Solution

Engineered for high-demand commercial fleet service, this direct-fit rear converter features heavy-gauge stainless steel tubing and an expanded converter body that resists corrosion and thermal cracking under high loads. Inside, a high-flow ceramic honeycomb substrate is treated with an optimized precious-metal washcoat to maximize chemical conversion of HC, CO, and NOx without restricting flow. The 3.0-inch outlet assembly incorporates precision laser-cut flanges, mandrel-bent routing, and factory-matched oxygen sensor bungs to maintain OEM backpressure parameters and clear emissions trouble codes without cutting or custom fabrication.

What's Included

• 1 x Direct-Fit Rear Catalytic Converter (3 in. Outlet)
• Exhaust Gasket(s)
• Mounting Hardware

Technical Specifications

Compatibility

• 2013-2019 Ford F-450 Super Duty 6.8L V10 (Rear Position)
• 2013-2019 Ford F-550 Super Duty 6.8L V10 (Rear Position)

Frequently Asked Questions & Fitment Warnings

Does this fit the Super Duty F-450,F-550?

Yes, this is a direct fit for the 2013-2019 Ford F-450,F-550 equipped with the 6.8L Triton V10 engine. Note: Not legal for sale or use in California, Colorado, New York, or other CARB-adopting states; 49-state EPA compliant only.

Will this resolve active P0420 or P0430 diagnostic trouble codes?

Yes, replacing a depleted or broken substrate with this fresh washcoat converter will restore downstream catalyst efficiency, provided oxygen sensors and upstream exhaust plumbing are free of leaks.

The Ford Commercial Standard

Designed to handle the sustained thermal abuse and heavy-hauling rigors demanded by commercial Super Duty platforms, this converter maintains durable structural integrity and uninterrupted exhaust flow across severe-duty fleet applications.