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Water Bypasss hose ???

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Old 01-16-2021, 10:23 AM
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Water Bypasss hose ???

1990 T4r 4x4 3vz w/ auto

Damaged what I believe to be a water bypass hose from the thermostat outlet to the engine block located on the driver's side, not sure what to call the item to order, nor source. Any comments/suggestions appreciated!!.
Old 01-16-2021, 11:02 AM
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A picture is worth a thousand words. If you can get us a picture of the hose you're talking about, it would help us a lot.

Pat☺
Old 01-17-2021, 10:03 AM
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Decided to attempt posting pic with the item (water bypass hose) installed, at this point I can possibly reuse the item so I do not want to remove until I have found a replacement?

Hard to determine but the top of the pic unable to see where the hose is connected to the thermostat inlet/outlet? and runs along the side of the oil pan to some type of module. Appears no longer that 12-18 inches.


Old 01-17-2021, 10:57 AM
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Hose, Oil Cooler 15778-65020 https://parts.lakelandtoyota.com/p/T...577865020.html About $10 online, probably a little more at a brick-and-mortar dealer.
Old 01-17-2021, 10:57 AM
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Believe I found the item by going to Toyota part supplier which they list as water bypass hose.#4, website does not provide item description but it certainly looks close enough for $12 to give it a try? Water pump/thermostat, belt installed now the matter of reassembling?

Appreciate U'all help, I thank you!
Old 01-17-2021, 01:47 PM
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Story of my life, had I waited 10 min to review U'r comment I probly would have purchased the correct item and at a cheaper cost. I purchased the item thru same source so if it does not work I may be able to return and swap for correct part; if not, just another item to add to my list of extra parts.

Part No.: 16281-65010
HOSE, WATER BY-PASS
I thank you for the info!!
Old 01-17-2021, 06:22 PM
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The hose you ordered goes from a nipple next to the Fuel Pressure Regulator, to underneath (and into) the throttle body. When you get the one you ordered, be sure to carefully eyeball the one you have. If you're not completely satisfied with your current hose, replacing it would be worth the $12.
Old 01-18-2021, 08:57 AM
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Originally Posted by scope103
The hose you ordered goes from a nipple next to the Fuel Pressure Regulator, to underneath (and into) the throttle body. When you get the one you ordered, be sure to carefully eyeball the one you have. If you're not completely satisfied with your current hose, replacing it would be worth the $12.
Best wait for the replacement to compare before removing the exciting hose, the damage consist of a small puncture within an inch of the end of the hose and the nipple on the thermostat is fairly long should cover the puncture until I purchase the correct hose.

Thank you!!
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