Keeping your Mack engine running smooth? The Baldwin B5176 heavy-duty coolant spin-on filter has you covered! This American-made filter is built tough for commercial trucks and equipment that work hard every day. It directly replaces Fleetguard WF2078, so you know you're getting quality without the hassle. With 3/4-20 threads and dimensions of 3 11/16\ OD x 5 3/8\ length, it's the perfect fit for your cooling system maintenance. No chemicals included - just pure filtration performance that helps protect your engine from contaminants. Perfect for fleet maintenance, repair shops, or DIY truck owners who want reliable OEM-quality parts. Baldwin's reputation for durability means this filter can handle the demands of long hauls and tough working conditions. Easy to install and built to last, it's the smart choice for keeping your Mack engine's cooling system in top shape. Don't settle for less when it comes to protecting your investment - go with Baldwin quality!