Heavy-Duty Radiator Cap - Lisle

The Lisle 61420 Heavy-Duty Radiator Cap is engineered for demanding cooling system service in severe-duty vehicles and industrial equipment. This professional-grade cap provides precise system pressure control, which is essential for preventing engine overheating and coolant loss in challenging operating environments. It supports efficient heat transfer and stable operating temperatures, crucial for maintaining peak performance in heavy-duty applications.

Key Features

• Durable Construction: Built with professional-grade materials for continuous, high-demand use on fleet, industrial, and off-road machinery, ensuring long-term reliability in harsh conditions.
• Consistent Pressure Regulation: Calibrated to maintain optimal cooling system pressure, promoting efficient heat transfer and stable engine operating temperatures.
• Secure, Leak-Resistant Seal: Features precision-engineered sealing surfaces to minimize coolant loss and prevent air intrusion, which can lead to hot spots and premature component wear.
• Corrosion Resistance: Materials are specifically formulated to withstand aggressive modern coolants and elevated under-hood temperatures over extended service intervals.
• Reduced Downtime: Delivers dependable performance to help prevent cap-related failures, reducing costly comebacks and keeping vehicles and equipment in service longer.

Applications

The Lisle 61420 is designed for heavy-duty and industrial cooling systems where reliable pressure control is essential. It is suitable for Class 6–8 trucks, commercial vehicles, agricultural and construction machinery, off-road, mining, and vocational equipment, as well as stationary engines, compressors, and industrial power units. This cap also serves as a direct replacement in many applications, particularly where the OE part or cross-reference number 225193 is specified. Always verify fitment before installation.

Specifications

• Manufacturer: Lisle
• Model Number: 61420
• Shipping Weight: Approx. 1 lb.