Dodge Coolant Overflow Cap

thingiverse

A colleague misplaced the cap for his 2010 Dodge Ram 3500 6.7L Diesel truck's coolant reservoir. He couldn't locate a suitable replacement, as every online part number matched but was too small for his overflow tank's opening. The washer fluid tank lid shared the exact same design, so he brought it to me for duplication. After two attempts, I successfully created a good fit. I recommend 3D printing with Nylon. Taulman Nylon 645 proved ideal due to its flexibility, allowing it to fold in half as needed, heat resistance, and durability. Twelve months into the project's lifespan, my colleague reports that the hinge of this cap remains intact, the cap still fits snugly after repeated use, and the entire assembly has withstood Florida's extreme heat and humidity thus far.