PETERBILT 579 YEAR 2021 COOLANT RESERVOIR CAP AND KENWORTH Heavy Duty Replacement Part

This replacement coolant reservoir cap is engineered for heavy-duty commercial trucking applications, specifically designed for Peterbilt 579 (2013-2021) and Kenworth T680 and T880 (2013-2021) models. As a direct replacement component, this cap ensures proper fit and reliable performance in engine cooling systems that utilize Behr cooling modules. The cap is manufactured from durable injection-molded plastic construction, providing excellent chemical resistance to coolant solutions while maintaining structural integrity under standard operating conditions. It is compatible with coolant reservoir tanks measuring 23 1/4 inches by 19 inches, with inlet and outlet dimensions of 3/8-inch diameter and 1 3/8-inch length, making it a precise fit for OEM-specified cooling systems. This replacement cap is typically sold as part of a complete coolant reservoir assembly that includes the tank, integrated coolant level sensor, and cap, though individual caps are available for customers requiring only the cap replacement. The integrated sensor component allows for accurate coolant level monitoring and warning systems in the vehicle's dashboard display, supporting proper engine temperature management and preventive maintenance protocols. Ideal for fleet maintenance operations, independent repair shops, and commercial trucking businesses, this cap replacement addresses cooling system leaks, damaged seals, or worn threads that compromise system performance. Direct replacement compatibility eliminates guesswork during installation, reducing downtime and labor costs. The product meets the specifications required for safe operation in heavy-duty commercial applications where reliable cooling system performance is critical to vehicle uptime and operational efficiency. Original Model: PETERBILT 579 YEAR 2021 COOLANT RESERVOIR CAP AND KENWORTH