Stainless T3 Turbo Manifold for Toyota 4Runner (1996-2000) 2.7L

High-Flow T3 Turbo Exhaust Manifold for 1996-2000 Toyota 4Runner (N180)

What it Does: The Stainless T3 Turbo Manifold replaces the restrictive factory cast iron exhaust manifold on the 1996-2000 Toyota 4Runner to route exhaust gases efficiently into a T3 turbocharger and 35mm external wastegate.

The Stock Toyota 4Runner Exhaust Flow Restriction

The factory cast iron manifold on the naturally aspirated 3RZ-FE is engineered strictly for low-cost mass production, featuring abrupt runner mergers, restrictive internal diameters, and uneven cylinder scavenging. Under sustained high exhaust gas temperatures (EGTs), OEM cast units are susceptible to stress fractures. Furthermore, the OEM manifold lacks turbocharger provisions, choking volumetric efficiency when attempting forced-induction conversions on the heavy N180 platform.

The Engineering Solution

Constructed from heavy-gauge, mandrel-bent stainless steel tubing, this tubular header ensures continuous internal diameter and smooth gas expansion from the cylinder head ports to the turbine inlet. Fully TIG welded to resist thermal expansion cycles and high-boost fatigue, the design incorporates optimized runner lengths to equalize exhaust pulses, accelerating spool dynamics for T3 turbine housings. A dedicated 35mm external wastegate flange provides precise boost regulation, preventing boost creep under heavy off-road or highway loads.

What's Included

• 1 Stainless Steel T3 Turbo Manifold
• 1 Exhaust Manifold Gasket

Technical Specifications

Compatibility

• 1996-2000 Toyota 4Runner Base 2.7L L4 (3RZ-FE)

Frequently Asked Questions & Fitment Warnings

Does this fit the N180 4Runner?

Yes, this is a direct fit for the 1996-2000 Toyota 4Runner equipped with the 3RZ-FE 2.7L engine. Does not fit 3.4L 5VZ-FE V6 models. Sold for off-road/competition use only; not CARB compliant.

Is an ECU tune required after installation?

Yes, custom fuel maps and ignition timing adjustments are required to safely manage forced induction and prevent engine detonation.

The Toyota Trail Durability Standard

Engineered to handle grueling overland trails and sustained torque loads, this stainless steel manifold provides the thermal resilience and crack resistance required for heavy-duty 4WD applications.