Performance Radiator for Toyota 4Runner (2010-2022) 4.0L Automatic

Heavy-Duty All-Aluminum Performance Radiator for 2010-2022 Toyota 4Runner

Direct-fit thermal management upgrade: Engineered to eliminate factory plastic end-tank failure points and significantly improve heat rejection under severe towing, off-road crawling, and high ambient operating temperatures.

The Stock 4Runner Thermal Limitation

The OEM cooling unit relies on composite plastic end-tanks mechanically crimped onto a thin aluminum core. Over repeated thermal cycles, high cooling system pressures, and off-road torsional chassis flex on the N280 platform, these crimped seams degrade. The composite inlet and outlet necks become brittle, leading to micro-cracks, sudden tank separation, coolant loss, and severe overheating risks for the aluminum 1GR-FE engine block.

The Engineering Solution

Constructed entirely from 100% TIG-welded aircraft-grade aluminum, this performance unit replaces fragile plastic tanks with durable, fully welded tanks. The internal core features a high-density louvered fin design and oversized fluid channels, promoting superior convective heat transfer and reducing thermal saturation during sustained low-speed trail ascents or heavy load towing. It includes a built-in transmission oil cooler matching factory line configurations for reliable automatic fluid temperature control.

Technical Specifications

Compatibility

• 2010-2022 Toyota 4Runner 4.0L V6 Automatic: SR5, Trail, TRD Off-Road, TRD Pro, Limited, Nightshade, Venture, SR5 Premium, TRD Off-Road Premium
• Direct Replacement OE Numbers: 16400-31710, DPI 13251
• Excluded Fitments: Does not fit 1988-1995 Toyota 4Runner; Does not fit 2010 Toyota 4Runner with 2.7L 4-cylinder engine.

The Toyota Trail Durability Standard

Engineered to handle severe trail vibration, sustained grade pulling, and overland weight loads without mechanical fatigue or cooling degradation.