Catalytic Converter for Jeep Grand Cherokee (2013-2019) 3.6L

Direct-Fit Catalytic Converter Assembly for 2013-2019 Jeep Grand Cherokee

What it Does: Restores exhaust flow dynamics and clears catalyst efficiency diagnostic trouble codes (P0420/P0430) on the 3.6L Pentastar platform by replacing degraded factory emissions monoliths.

The Stock Grand Cherokee Substrate Breakdown

Factory catalytic converters on the WK2 platform are susceptible to internal substrate degradation over prolonged duty cycles. Continuous thermal expansion cycles cause washcoat sintering, micro-fracturing of the ceramic core, and reduction of noble metal surface contact. Over time, restricted exhaust pathways increase backpressure against the cylinder heads, driving up exhaust gas temperatures (EGTs), diminishing low-end torque output, and triggering check engine lights.

The Engineering Solution

Engineered as a direct bolt-on assembly, this unit features a heavy-gauge 409 stainless steel housing designed to withstand extreme thermal stress, road debris impact, and structural corrosion. Inside, an emissions-grade ceramic honeycomb substrate delivers high-efficiency catalytic reduction with minimal exhaust restriction. Precision-formed flanges and integrated factory-profile mounting brackets ensure an accurate seal to stock exhaust manifolds, retaining factory oxygen sensor bung locations without requiring cutting or custom welding.

Technical Specifications

Compatibility

• 2013-2019 Jeep Grand Cherokee 3.6L V6 (All Trims)
• Placement: Left and Right side assembly
• Direct Interchange OE Numbers: 679-549, 54926, 679-548, 68036556AG, 68110124AE, 68303469AB, 68037894AE, 68037894AF, 68110125AE, 68036556AE
• Includes direct-fit mounting hardware, clamps, and installation gaskets

The Jeep Durability Standard

Engineered to handle the vibration and heavy load demands of trail use and towing, this assembly maintains structural integrity and leak-free emissions sealing under severe operating conditions.