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Review on Motorcraft RG637 Coolant Outlet O Ring by Jon Lewis

Revainrating 5 out of 5

OEM part with good quality.

Original part. Good quality, works great with Explorer 2006. If you need to replace the thermostat it is highly recommended that you replace the o-ring as well. There are 4 o-rings in the package, more than enough.

Pros
  • Replacement parts
Cons
  • Minor repairability