Catalytic Converter for RAM ProMaster (2014-2021) 3.6L Left & Right

Direct-Fit Catalytic Converter Set for 2014-2021 RAM ProMaster

What it Does: The direct-fit catalytic converter set replaces deteriorated factory emissions assemblies on the 2014-2021 RAM ProMaster to restore exhaust velocity, extinguish catalyst efficiency trouble codes, and maintain legal federal emissions compliance.

The Stock RAM ProMaster Catalyst Breakdown

Commercial fleet duty cycles subject the VF platform ProMaster to relentless thermal cycling and prolonged idle times. The factory catalytic converters on the 3.6L Pentastar engine frequently suffer from washcoat degradation, ceramic substrate fracturing, or carbon-fouled matrix channels. Once the OEM substrate breaks down, exhaust backpressure spikes—restricting engine breathing, driving up cylinder head temperatures, and triggering persistent P0420 and P0430 diagnostic trouble codes that lock the ECU into fuel-trim compensation maps.

The Engineering Solution

This replacement bank-to-bank catalytic converter assembly delivers an exact bolt-on solution engineered to stock exhaust geometry. Encased in heavy-gauge 409 stainless steel to withstand road debris and corrosive road salts, the unit houses a high-flow, heat-resistant ceramic honeycomb substrate coated with precious catalytic metals (Pt, Pd, Rh). Precision-machined, thick-gauge mounting flanges and pre-positioned factory-spec oxygen sensor bungs eliminate the need for custom cutting or welding. High-integrity welded seams ensure zero exhaust gas leaks, while included hardware and crush seals guarantee a gas-tight seal under heavy payload torque loads.

Technical Specifications

Compatibility

• 2014-2021 RAM ProMaster 1500 3.6L V6
• 2014-2021 RAM ProMaster 2500 3.6L V6
• 2014-2021 RAM ProMaster 3500 3.6L V6

Frequently Asked Questions

Does this fit the VF ProMaster?
Yes, this is a direct fit for the 2014-2021 RAM ProMaster equipped with the 3.6L Pentastar engine on the VF chassis.

Will this assembly resolve active P0420 and P0430 DTC codes?
Yes, assuming no upstream air-fuel ratio or ignition misfires exist, the high-efficiency catalytic core restores standard emissions conversion rates and clears efficiency codes.

The RAM Heavy-Duty Commercial Benchmark

Engineered to handle severe fleet service and maximum payload demands, this emissions system eliminates power-robbing backpressure to keep commercial vans moving safely and efficiently under heavy payloads.