Catalytic Converter for Kia Sedona (2015-2018) 3.3L Front

Direct-Fit Front Exhaust Manifold Catalytic Converter for 2015-2018 Kia Sedona (YP)

What it Does: The Front Catalytic Converter replaces the degraded or clogged factory manifold assembly on the 2015-2018 Kia Sedona to eliminate P0420/P0430 DTC codes, restore proper exhaust flow, and maintain EPA-compliant tailpipe emissions.

The Stock Kia Sedona Manifold Substrate Degradation

Factory front exhaust manifolds on the YP chassis Lambda II G6DH direct-injection engines endure extreme thermal cycling due to their close proximity to cylinder head exhaust ports. Over extended drive cycles, direct-injection carbon fouling and excessive exhaust gas temperatures cause the dense OEM ceramic honeycomb washcoat to sinter, melt, or structurally crumble. This thermal stress elevates exhaust backpressure, restricts scavenging dynamics, triggers lingering check engine lights (DTC P0420), and risks downstream engine damage from ceramic dust ingestion during valve overlap.

The Engineering Solution

Engineered as a bolt-on assembly matching OEM casting geometries, this direct-replacement unit features heavy-gauge stainless steel tubing and durable flange plates to mitigate thermal warping. Inside, a high-efficiency ceramic substrate formulated with an optimized precious-metal catalytic washcoat ensures rapid light-off temperatures and precise gas-to-surface reduction without inducing flow bottlenecks. Precision robotically welded seams prevent exhaust leaks, while the CNC-machined factory-located oxygen sensor bung preserves standard harness routing and sensor depth to ensure accurate closed-loop ECU AFR trimming.

Technical Specifications

Compatibility

• 2015 Kia Sedona L, LX, EX, SX, SX Limited 3.3L V6 (Front)
• 2016 Kia Sedona L, LX, EX, SX, SX Limited 3.3L V6 (Front)
• 2017 Kia Sedona L, LX, EX, SX, SX Limited 3.3L V6 (Front)
• 2018 Kia Sedona L, LX, EX, SX 3.3L V6 (Front)

Frequently Asked Questions

Does this fit the YP Sedona?

Yes, this is a direct fit for the 2015-2018 Kia Sedona equipped with the Lambda II 3.3L G6DH engine.

Is this catalytic converter legal for use in California or CARB-compliant states?

No, this unit is 46-state EPA compliant and cannot be sold, shipped, or installed on vehicles registered in California, New York, Colorado, or Maine.

The Kia Durability Standard

Designed to handle everyday family hauling and continuous highway loading, this assembly provides heat resilience and structural durability that keep your minivan running smoothly with zero exhaust leaks.