Performance Radiator for Toyota Tundra (2000-2006) 3.4L 4.0L

Heavy-Duty All-Aluminum Radiator for 2000-2006 Toyota Tundra

Direct-Fit Cooling Upgrade: Replaces failure-prone OEM plastic-tank units with a fully welded all-aluminum assembly designed to stabilize coolant temperatures under sustained thermal load and heavy towing conditions.

The Stock Tundra Plastic End Tank Vulnerability

Factory radiators on first-generation Tundras rely on glass-reinforced plastic end tanks crimped to an aluminum core via rubber O-ring gaskets. Over years of thermal cycling, engine vibrations, and pressure spikes, these polymer tanks embrittle, crack at the inlet/outlet necks, and develop seam leaks. Furthermore, stock single-row core depths limit heat dissipation during low-speed crawling or heavy bed loads, leading to rapid heat soak and elevated transmission fluid temperatures via integrated cooler lines.

The Engineering Solution

This drop-in performance unit is constructed from premium 100% TIG-welded aircraft-grade aluminum, eliminating mechanical crimps and gasket failure points completely. Featuring a high-efficiency core with dense louvered fins and wide cooling tubes, it significantly expands surface area to optimize convective heat transfer. The internal fluid paths are engineered for balanced flow distribution, lowering cylinder head operating temperatures and resisting fatigue from extreme operating pressures.

Technical Specifications

Compatibility

• 2000-2004 Toyota Tundra 3.4L V6 (5VZ-FE) - Base, SR5 (Automatic & Manual)
• 2005-2006 Toyota Tundra 4.0L V6 (1GR-FE) - Base, SR5 (Automatic & Manual)
• Note: Does not fit 4.7L V8 (2UZ-FE) models or 2007+ (Gen 2) Tundra.

The Toyota Truck Caliber

Built for first-generation Tundra platforms operating under rigorous payload and trail demands, this all-aluminum cooling assembly delivers long-term structural integrity and steady thermal regulation without cracking under stress.