Why 6.7 Cummins Freeze Plugs Fail and How to Fix Them

If you've spent any amount of time under the hood of a Ram truck, you probably already know that 6.7 Cummins freeze plugs can be a real pain when they start to leak. It's one of those things that seems like a minor detail until you see a bright orange or green puddle forming on your driveway. These little metal discs are supposed to be a fail-safe for your engine block, but in the real world, they often end up being a point of frustration for high-mileage drivers and performance enthusiasts alike. ...

May 12, 2026 · 6 min · Sonia Paskin