Another Coolant Leak Question

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Nov 22, 2022 | 07:53 AM

#16

deveroutdoors

Tuned

Joined: Sep 2019

Posts: 309

Likes: 56

From: Dallas, TX

Quote:

Originally Posted by John1211

2017 f250 with 130k miles and mine appears to be leaking from both the top radiator connection and at the thermostat connection.

BC3Z-8590-C is the correct o ring for the connection at the radiator end but does anyone have the part number for the O ring on the opposite side? I found HC3Z-8590-A but can anyone confirm?

This is the one I had the most trouble with because two dealers told me that particular O ring is not serviceable. So I drained coolant, took the old one in and said find me an O ring that matches this size. The HC3Z family of parts is old and replaced by BC3Z. So you want BC3Z-8590-F.

Nov 23, 2022 | 06:02 PM

#17

John1211

2nd Gear

Joined: Nov 2022

Posts: 2

Likes: 0

Removed the hose and removed the orings and they are identical. Both radiator and thermostat end take BC3Z-8590-C

Nov 24, 2022 | 06:18 AM

#18