Diagnosis and Part Selection Advice:

How did you know this part needed replacement? Why did you choose a certain brand/part number?
leaking coolant from the top.
comes with a cap.

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Part Comments

What came in the box? Were additional nuts, bolts, sealant, etc. needed for the repair?

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Repair / Installation tips:

Special tools needed? Have to remove other parts to reach this one? Any left-hand threads, sharp edges, messy fluids or other pitfalls to avoid?