CASE Construction Radiator Filler Cap (Part #82022744) This OEM radiator filler cap is engineered to maintain proper coolant system pressure and prevent overheating in CASE construction equipment. Designed to factory specifications, it ensures a secure seal on your radiator, protecting against coolant loss and contamination. Essential for reliable engine performance and longevity in demanding job site conditions. Compatible with CASE machinery requiring this specific part number. Replace periodically as part of routine maintenance to keep your equipment operating at peak efficiency.