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Discussion Starter #1
What is the Diameter of the PS return hose ?
OEM Part # 53731-804-J50

Because I want to flush it completely - looking to connect a tube via a Splicer - what size should I get?
 

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Discussion Starter #2
Also removing the return hose - will it end up in leaking due to hardened rubber?
 

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Similar problems. Yes, the old hardened rubber hose will leak and, or the pump will cavitate (and make more noise) from sucking in air. If you have a 98-01, you can still replace the hose, but if you're like me with a 94-97, you've got to roll the dice that the Gen3.5 will fit on a Gen3, seal properly, and not get tore up by the PS belt.

IF the hose is for sure getting replaced, you can cut through a middle section and measure the inside diameter there (SAE: between 7/16 & 11/16). Measuring the stretched connection ends will give you the wrong ID. The OD is 20mm FWIW.
 
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