Catalytic Converter for Nissan Pathfinder (2013-2019) 3.5L Front & Rear

Direct-Fit Replacement Flex Y-Pipe Catalytic Converter for 2013-2019 Nissan Pathfinder (R52)

What it Does: The direct-fit flex Y-pipe catalytic converter replaces degraded factory emissions pipework and clogged substrate on the 2013-2019 Nissan Pathfinder to restore proper exhaust scavenging and eliminate catalyst inefficiency diagnostic trouble codes.

The Stock Nissan Pathfinder Exhaust Flex & Substrate Failure

On the fourth-generation R52 platform, cyclic thermal expansion and constant engine torsional movement place intense shear strain on the low-grade factory exhaust flex joints. Over time, internal wire mesh braids fatigue and tear, causing pronounced pre-catalyst exhaust leaks, false downstream oxygen sensor readings, and persistent P0420/P0430 DTCs. Simultaneously, continuous thermal cycling deteriorates the original ceramic washcoat, leading to substrate sintering, reduced flow velocity, and increased backpressure that strangles exhaust flow across both cylinder banks.

The Engineering Solution

Engineered to resolve transverse engine movement issues, this unified Y-pipe assembly integrates heavy-duty, double-braided stainless steel flex sections that isolate engine vibration and prevent stress-cracking at the merge collector. Built with high-grade stainless steel tubing and durable ceramic substrate cores, this direct replacement matches original gas residence times while lowering restriction compared to fouled stock units. Thick, laser-cut flanges prevent thermal warping and ensure a leak-free seal across both front and rear manifold connections.

What's Included

• 1 Flex Y-pipe catalytic converter assembly
• Installation accessories supplied with the converter

Technical Specifications

Compatibility

• 2013-2019 Nissan Pathfinder 3.5L V6 (S, SV, SL, Platinum)

Frequently Asked Questions & Fitment Warnings

Does this fit the R52 Pathfinder?

Yes, this is a direct fit for the 2013-2019 Nissan Pathfinder equipped with the 3.5L VQ35DE or VQ35DD engine. This component is 46-state legal and is not legal for sale, installation, or use on vehicles registered in California, New York, Colorado, or Maine emissions jurisdictions.

Is this unit a rear-only converter?

No, this single-piece Y-pipe assembly spans and integrates both the front and rear intermediate exhaust sections into one direct-fit housing.

The Nissan Durability Standard

Designed for daily towing and all-weather utility, this heavy-gauge stainless steel catalytic converter assembly withstands continuous thermal cycling and road salt exposure without the structural fatigue common to factory thin-wall flex pipe designs.