20-25 Ford 6.7L Powerstroke Ford Turbo Coolant Line O-Ring

Fits: 2020-2025 Ford 6.7L Powerstroke 

It’s a direct-fit, OEM (OEM-spec) replacement O-ring — designed to replace the original seal when reinstalling or servicing the coolant line/turbo coolant connection. The O-ring provides a tight-coolant-seal between the turbocharger’s coolant line and its connection point. Because the turbo and its coolant lines are exposed to high engine heat and coolant pressure, a proper seal is essential to prevent leaks. A failed or degraded O-ring can lead to coolant leaks at the turbo — which could cause coolant loss, overheating, engine damage, or turbo cooling problems. Replacing this O-ring helps maintain coolant integrity and engine reliability. Using a genuine or OEM-spec O-ring (like this part) helps ensure correct fit, sealing surface match, and longevity under the thermal and pressure cycles typical of a turbocharged diesel engine.

You’ve removed the turbo coolant line (for turbo service, repair, or replacement), and are reinstalling — always good practice to install a new O-ring rather than reuse an old one. You’re experiencing coolant leaks near the turbo area — replacing the O-ring is often the first step to stop leaks without replacing larger, expensive components. During routine maintenance or turbo-system overhaul — e.g. when working on turbo, coolant system, or other engine internals — replacing all seals helps prevent future leaks due to age or heat-cycle fatigue. 

Ford: HL3Z-6N652-A