OSC 709 Radiator Replacement for Chevrolet GMC Truck Van

The OSC 709 is a direct-fit replacement radiator engineered for select 1981-1991 Chevrolet and GMC light-duty trucks, vans, and SUVs. This radiator features a durable 1-row aluminum core with plastic tank construction, designed to meet or exceed OEM specifications for reliable engine cooling performance.

Key Features:

• 1-row aluminum core with plastic tanks for optimal heat dissipation
• Transmission oil cooler (TOC) equipped for automatic transmission applications
• 100% pressure tested up to three times during production for leak-free operation
• Drop-in fit with all necessary fittings and hardware included for easy installation
• Premium grade tubes, fins, headers, and tanks for enhanced durability
• Engineered to OEM specifications for precise fitment and function

OSC Automotive radiators are manufactured under ISO/TS 16949 quality standards and undergo rigorous vibration testing to simulate real-world driving conditions including potholes, curbs, and off-road use. Each radiator is designed to provide consistent coolant flow and efficient heat dissipation, preventing engine overheating under varying operating conditions. The transmission oil cooler is tested prior to installation in the tank, ensuring reliable performance for the life of the component.