Exhaust System with Catalytic Converter for Toyota 4Runner (1996-2000) 3.4L

Direct-Fit 409 Stainless Exhaust & Catalytic Converter for 1996-2000 Toyota 4Runner (N180)

What it Does: This bolt-on exhaust and converter kit replaces corroded piping on the N180 4Runner 3.4L 5VZ-FE V6 to restore emissions compliance.

The Stock Toyota 4Runner Exhaust Failure

On the third-generation N180 4Runner with the 3.4L 5VZ-FE V6, road salt and thermal cycling rapidly corrode factory mild-steel flanges, mid-pipes, and muffler seams. Prolonged heat soak also fractures the OEM converter's ceramic substrate and degrades catalyst washcoat efficiency. Once pinholes or cracked welds form upstream of the rear O2 sensor, exhaust leaks skew readings and trigger a P0420 catalyst efficiency fault.

Common Symptoms of a Failing OEM Exhaust System

• Check Engine Light: Triggers P0420 from catalyst degradation or exhaust leaks.
• Rattles & Leaks: Fractured ceramic substrate or rusted gaskets leak fumes.
• Restricted Flow: Collapsed muffler baffles raise backpressure and fail inspections.

The Direct-Fit 409 Stainless Solution

Replacing OEM part numbers 53287, 55054, and 54081, this complete system is built from corrosion-resistant 409 stainless steel with mandrel-bent tubing to preserve factory exhaust velocity. Heavy-duty flanges, factory-style hanger rods, and threaded O2 sensor bosses bolt directly to stock mounts without cutting or welding. Its EPA-compliant ceramic honeycomb substrate restores proper backpressure and quiet, factory-like acoustic damping under heavy load for the 3.4L 5VZ-FE V6.

What's Included

• 1 Manifold Catalytic Converter
• 1 Mid Pipe & 1 U-Shaped Connecting Pipe
• 1 Rear Muffler & 1 Tail Extension Pipe
• 3 U-Clamps, 4 Ring Gaskets & 2 Manifold Gaskets
• Bolts, Studs, Nuts & Washers

Technical Specifications

Compatibility

• 1996-2000 Toyota 4Runner 3.4L 5VZ-FE V6 (Federal Emissions)
• Excludes 4-cylinder models; not legal in CA, CO, NY, ME

Frequently Asked Questions & Fitment Warnings

Does this fit the N180 4Runner?

Yes. Direct fit for 1996-2000 4Runner 3.4L 5VZ-FE V6 federal models. Excludes 4-cylinder engines; not legal in CA, CO, NY, ME.

Does it clear P0420 and reuse O2 sensors?

Yes. It resolves P0420 catalyst codes when healthy stock O2 sensors are reused.

Are welding or extra hardware required?

No. It bolts to stock mounts using all included gaskets, clamps, and fasteners.

The Toyota Heavy-Duty Standard

Built for trail durability and towing heat, this 409 stainless steel exhaust keeps your N180 leak-free. Restore quiet factory flow in one bolt-on order.