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Compatible with 2007.5+ RAM 6.7L Cummins, the Mishimoto Top Heater Hose Upgrade is engineered to replace the failure-prone OEM quick-disconnect fitting with a robust, leak-resistant solution. This direct-fit upgrade restores reliable coolant flow and sealing integrity under demanding conditions. The kit eliminates the OEM quick-disconnect by using an O-ring-less -10AN fitting with pre-installed thread sealant, preventing leaks and simplifying future servicing. Crafted from CNC-machined aluminium and stainless steel, the adapter and fitting resist corrosion, heat, and pressure for long-term durability. The included replacement hose forms a secure connection using a worm-gear clamp for a tight, leak-resistant seal. Installation is straightforward with no special tools required—slip the hose into place, tighten the clamp, and complete the upgrade in under 30 minutes with no cutting or modifications. As towing demands and engine outputs rise, dependable cooling components have become essential. This upgrade reflects the trend toward hardened, purpose-built parts that perform reliably under elevated heat and pressure. Since 2005, Mishimoto has delivered proven cooling solutions. This Top Heater Hose Upgrade continues that tradition with high-performance materials, leak-resistant engineering, and direct-fit convenience for lasting reliability.