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Pilot Inner Diameter for Derale Thermal Fan Clutch D22140  

Question:

I am trying to get information on your fan clutch part No. D22140, all the information is great and very detailed, however i dont see one measurement, Im trying to confirm the I.D. pilot that connects to my water pump is 5/8? GM made two different water pumps and fan clutches one with a 3/4 pilot the other with a 5/8 pilot. thank you

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Expert Reply:

I reached out to Derale, who as able to confirm for me that the pilot inner diameter was 5/8 inches of the Derale Thermal Fan Clutch with Reverse Rotation # D22140.

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Kyle S

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