Truck owners and mechanics, this NAPA Gold cooling system filter is the real deal for keeping your Mack truck running cool and clean. The 4545 model is specifically designed for Mack applications including Granite, Pinnacle, TerraPro, and Titan models. With a 5.424 inch height and 3.69 inch outer diameter, it's built to handle the demands of heavy-duty truck cooling systems. The spin-on design makes installation and replacement straightforward - no special tools needed. What I appreciate about NAPA Gold filters is the quality construction and the comprehensive warranty that actually covers damage if there's a manufacturing defect. The thread size is 16x1.5mm with proper gasket dimensions to ensure a perfect seal every time. These filters help remove contaminants from your coolant system, preventing scale buildup and corrosion that can lead to expensive repairs down the road. The filtration media is designed to capture particles while maintaining proper coolant flow. Whether you're maintaining a fleet or just keeping your own truck in top shape, using quality filters like this NAPA Gold can extend the life of your cooling system components. The packaging is sturdy and the filter arrives ready to install. If you want reliable performance and peace of mind for your Mack truck's cooling system, this filter delivers the quality and fit you need without the guesswork.
Free 30-day returns 
Free 30-day returns
