The Keenso Freeze Plug Kit Replacement is a must-have solution for your 5.9L engine in 1989-2007 models, boasting 12 or 24 valves. Our kit is designed with 15pcs billet aluminum and rubber O rings, ensuring a secure and long-lasting fit. The freeze plug's primary function is to prevent water intrusion into the engine block, extending its lifespan and improving performance. With Keenso, you're investing in quality and durability, backed by the manufacturer's warranty. Don't delay - replace your freeze plug today!