Catalytic Converter for Nissan Titan (2017-2020) 5.6L Left and Right

Direct-Fit Exhaust Manifold Catalytic Converters for 2017-2020 Nissan Titan (A61)

What it Does: The Direct-Fit Exhaust Manifold Catalytic Converter Pair replaces failed factory driver- and passenger-side assemblies on the 2017-2020 A61 Nissan Titan VK56VD to restore exhaust flow, eliminate rattle, and clear P0420/P0430 codes.

The Stock Nissan Titan Manifold Converter Problem

High exhaust temperatures from the VK56VD 5.6L V8 subject the A61 Titan's factory integrated manifolds to heavy thermal cycling. Over time, the OEM ceramic core fractures or melts, causing P0420/P0430 catalyst-efficiency faults, exhaust backpressure spikes, and substrate rattle. Replacing both banks (140021LA0C, 140021LA0D) together maintains balanced flow.

The Direct-Fit Catalytic Converter Solution

These bolt-on left and right assemblies combine stainless steel housings and tubing with a precious-metal washcoated ceramic honeycomb substrate for efficient HC, CO, and NOx conversion. Factory-style flanges, brackets, and sensor bungs ensure leak-free OBD-II operation. EPA federal compliant, they directly replace 327-50674R and 327-50675L without welding.

What's Included

• 2 x Exhaust Manifold Catalytic Converters (Driver Side and Passenger Side)
• 2 x Manifold Gaskets
• 2 x Outlet Ring Gaskets
• Studs, bolts, and nuts

Technical Specifications

Compatibility

• 2017 Nissan Titan (5.6L V8, Left and Right)
• 2018 Nissan Titan (5.6L V8, Left and Right)
• 2019 Nissan Titan (5.6L V8, Left and Right)
• 2020 Nissan Titan (5.6L V8, Left and Right)

Frequently Asked Questions & Fitment Warnings

Does this fit the A61 Titan?

Yes, this 2-piece set directly fits 2017-2020 Nissan Titan trucks with the VK56VD 5.6L V8. Warning: EPA federal compliant only (not CARB approved); not legal for vehicles registered in California, New York, Colorado, or Maine.

Are oxygen sensors included?

No, O2 sensors are not included; transfer your existing sensors or install replacements, and verify every joint for leaks after torquing the new gaskets.

The Nissan Durability Standard

Built for demanding towing and hauling duty, these stainless steel manifold converters keep your VK56VD running clean and rattle-free under sustained load.