High-performance radiator replacement for John Deere tractors—fits models 8430, 8440, and 8640, as well as engines 6466AR09 and 6499AR08. Cross-references OEM numbers RE21561, AR76838, AR73260, and AR84401.

Description

Radiator RE21561 / AR76838 / AR73260 / AR84401 – Replacement for John Deere Engine & Tractor

Aftermarket radiator engineered for efficient engine cooling and reliable thermal management in John Deere engine and large-frame tractor applications. Precision-manufactured components ensure drop-in compatibility with correct fitment.

Technical Specifications

• Part Numbers: RE21561, AR76838, AR73260, AR84401, AR73261
• Condition: New, aftermarket replacement
• Function: Engine coolant heat dissipation and thermal management for diesel engine protection

Equipment Compatibility

Fits John Deere Engine Models:

• 6466AR09
• 6499AR08

Fits John Deere Tractor Models:

• 8430
• 8440
• 8640

Why Choose This Radiator

The radiator is a critical component of your John Deere engine’s cooling system, dissipating heat from the coolant to maintain safe operating temperatures under heavy agricultural loads. This replacement unit delivers:

• Efficient engine cooling – Engineered to maintain correct coolant flow and heat transfer capacity for your John Deere 8000-series tractor
• Exact-fit installation – Direct replacement with correct core dimensions, inlet/outlet configuration, and mounting points
• Durable construction – Built to withstand high-load agricultural environments with temperature cycling, vibration, and debris exposure
• Cost-effective solution – Aftermarket quality at a fraction of dealer pricing

Package Contents

• 1 × Radiator RE21561 / AR76838 / AR73260 / AR84401

Essential for cooling system maintenance, radiator replacement, and preventive service. Keep your John Deere tractor running at optimal temperature on every field.

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