Upgrade the engine compartment of your International 4300 or 4400 with the RZ409 pressurized coolant reservoir. This direct replacement part is made of durable plastic material and comes with all necessary items for easy installation, including a temperature sensor, cap, hosing, and hose clamp. The RZ409 is 100% leak tested and does not require any drilling or modifications for installation. It is a perfect fit for your Bolt-On mounting style and has OE/OEM and Interchange Part Numbers of 603-5104, 2599039C91, 2602943C91, 2602872C91, 2591625C92, 3829605F91, and 3829605F92. Buy with confidence, and improve the performance of your engine compartment with this high-quality coolant reservoir. Exact item is shown. New without original packaging., Includes cap, sensor, and hose shown. Made in China. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.