Performance Radiator for Toyota 4Runner (1996-2002) 3.4L 2.7L

High-Efficiency Performance Aluminum Radiator for 1996-2002 Toyota 4Runner

What it Does: Replaces the failure-prone factory plastic-tank cooling unit with a robust, high-capacity all-aluminum core designed to maximize heat rejection under heavy trail crawling and towing loads.

The Stock 4Runner Cooling Weakness

The OEM radiator on third-generation 4Runners utilizes crimped plastic end tanks mated to an aluminum core. Over repeated thermal cycles and off-road chassis flex, the composite plastic embrittles, leading to seam separation and sudden cracking at the upper inlet neck. Furthermore, aged factory heat exchangers risk internal cooler wall breakdown, jeopardizing both cooling efficiency and powertrain reliability under sustained loads.

The Engineering Solution

Constructed entirely from T-6061 aircraft-grade aluminum with 100% precision TIG-welded end tanks, this direct-fit unit eliminates mechanical crimps and failure-prone polymers. The brazed core features an optimized high-density fin architecture, significantly expanding effective surface area to lower coolant temperatures and prevent engine heat soak during low-speed, high-load technical driving.

Technical Specifications

Compatibility

• 1996-2002 Toyota 4Runner 3.4L V6 (5VZ-FE)
• 1996-2000 Toyota 4Runner 2.7L I4 (3RZ-FE)
• Direct-fit replacement for OE Part: 16400-75180 / DPI: 1998
• Does not fit 2003-later (4th Gen) 4Runner models

The Toyota Durability Standard

Engineered to withstand rigorous trail use and heavy utility hauling without thermal throttling, delivering uncompromising cooling dependability for off-grid overland rigs and high-mileage builds.