Acrad

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https://parts.belllexusnorthscottsda...Promotion.html

Free shipping over $100

Acrad

OEM part # thread may speed up search for parts as well


https://www.clublexus.com/forums/gx-...t-numbers.html

MrTorgue

I second belllexus as well. Denso is the manufacturer of about all Toyota’s parts. Toyota owns them as far as I know. They have high quality parts.

nyctfl

That dealer is local to me. They have a good reputation.

LeX2K

Original radiator no longer available get the Denso.

L8Shift

Have you inspected the radiator cap?

chuyrobles

I think the leaking radiator is a symptom of your problem, not the cause. A leaking radiator will not normally cause coolant to boil, unless you lose a lot, and you said it was bubbling with the coolant level above the min line in the reservoir. Something is causing the coolant to boil. Most likely causes: faulty radiator cap, stuck thermostat (or some other blockage), or blown head gasket. If your coolant dont smell like exhaust, hopefully, its just a stuck thermostat. There is a test for the coolant to see if it has exhaust contaminates.

ASE

The radiator cap should hold 15 pounds of pressure. At sea level, this pressure increases the boiling point of water from 212 to 257 degrees F ... 3-Degrees per 1-PSI ... 45-degrees total ... so install a new radiator cap ... cheap insurance. Given you did not have low coolant, this is likely the cause ... unless the thermostat and / or water pump is faulty.

Yes, the radiator fails in that location ... visually appears to be the upper hose interface to the radiator, but is typically a (weeping) separation of the black plastic end tank to the radiator ... this could also cause a loss in pressure depending on severity ... so you lose some or all of that 45-degree advantage. It is somewhat common for these radiators to fail per the above in the 120,000+ mile range.

Beyond that ... STOP overheating the engine (boiling the coolant) ... you are going to blow a head gasket ... or worse. Also, never add water or coolant to an overheated engine ... wait for things to cool down ... or at least add while the engine is running.

Replacing the radiator is a challenge given the limited fore-aft clearances ... so go for it if you have the patience and tools necessary for working in a confined area. Also as stated above ... on refill, put the front of the vehicle on ramps so any air in the engine can escape in the radiator direction. Also replace the Serpentine Belt before you drop in the new radiator.

Acrad

OEM radiator is available & in-stock according to Matt @ OEM (Large parts code 20OFF (20% off according to Matt))

https://www.oemvehicleparts.com/oem-...bly-1640038290

PN: 16400-38290

ASE

That's a great price !

WRD4chano

any idea what the denso part number is? mine is in the same condition.


also in those images above, the battery seems to have water leaking from the top. is that due to the coolant spraying or the battery itself? mine is under two years old and looks just like that.

Acrad

Looks like Denso out of stock at RockAuto

https://www.rockauto.com/en/catalog/...,radiator,2172

LeX2K

If that is really in stock I would buy it. Denso seems to be out of stock everywhere.

chuyrobles

That is due to fumes and/acid seeping past the caps. Can also occur at the terminals. Not much you can do to prevent it. Just wipe it off and keep the area clean. On the terminals, it helps a bit to place those round felt pads under the battery terminals.

GuyHoozdis

This train of thought makes sense to me.

1. The radiator cap looks fairly new. There isn't any gunk on it nor any in the radiator where the cap fits. Would a picture help?
2. I smelled the reservoir and the radiator after taking the cap off and it doesn't smell like exhaust to me.
3. How can I test for a blockage?
4. Is there a way to test the thermostat short of visually inspecting it? If I do pull it out how will I know if it functioning properly or not?
5. Is there a way to test the water pump?