1980 Pickup Coolant Overflow Reservoir Cap - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 09-03-2019, 10:28 AM   #1 (permalink)
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1980 Pickup Coolant Overflow Reservoir Cap

My coolant reservoir cap on my 1980 pickup is disintegrating. I have not been able to locate one. The OD of the reservoir lip is 40mm and I'm trying to match one up. Dorman makes several that look like mine including one for a 84-95 pickup (P/N 54252). Does anyone know if the coolant reservoir cap off of a 84-95 pickup will fit on a 1980?
Thanks

Last edited by Sterling1; 09-03-2019 at 02:52 PM. Reason: Added the word "cap" in the last sentence.
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Old 09-03-2019, 01:00 PM   #2 (permalink)
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Yes it is the same. I checked on a stock 81 pick up, an 85 4 runner and a 93 pick up. The 93 is black, the other two are white.
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Old 09-03-2019, 02:52 PM   #3 (permalink)
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Yes it is the same. I checked on a stock 81 pick up, an 85 4 runner and a 93 pick up. The 93 is black, the other two are white.
Thanks!
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Old 09-08-2019, 11:30 AM   #4 (permalink)
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Well, the Dorman 54252 ID is slightly too small (38mm) to fit my 1980 reservoir. Dorman's website lists the "diameter" as 50.8mm. The OD is 42mm - there is no diameter that is 50.8mm.
Does anyone know where I can find a coolant overflow reservoir cap? I'd be interested in a replacement reservoir if I can find one at a decent price. This is a combination windshield washer fluid and coolant overflow reservoir.
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Old 09-08-2019, 12:00 PM   #5 (permalink)
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Amazon or the dealer might have the parts.
Cap should be about $20 - part # 85339-14010
Entire tank assembly about $50 - part # 16470-89106
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Old 09-08-2019, 12:30 PM   #6 (permalink)
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Originally Posted by Sterling1 View Post
Well, the Dorman 54252 ID is slightly too small (38mm) to fit my 1980 reservoir. Dorman's website lists the "diameter" as 50.8mm. The OD is 42mm - there is no diameter that is 50.8mm.
Does anyone know where I can find a coolant overflow reservoir cap? I'd be interested in a replacement reservoir if I can find one at a decent price. This is a combination windshield washer fluid and coolant overflow reservoir.
Replaced my 1979 Toyota 4x4 separate coolant & windshield bottles with fleabay universal ones made in Thailand. Shipping times weren't too bad either. OEMs had completely disintegrated from Commiefornia sun/heat.

Yours is kinda specialized alright:
https://www.ebay.com/itm/1982-TOYOTA...4AAOSwLbJdKoXF
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Old 09-08-2019, 12:49 PM   #7 (permalink)
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Amazon or the dealer might have the parts.
Cap should be about $20 - part # 85339-14010
Entire tank assembly about $50 - part # 16470-89106
The 85339-14010 cap looks like it might work but the 16470-89106 tank is wrong.
Do you have a PN for the tank in the link that czny posted?

Thanks
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Old 09-08-2019, 12:51 PM   #8 (permalink)
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Replaced my 1979 Toyota 4x4 separate coolant & windshield bottles with fleabay universal ones made in Thailand. Shipping times weren't too bad either. OEMs had completely disintegrated from Commiefornia sun/heat.

Yours is kinda specialized alright:
https://www.ebay.com/itm/1982-TOYOTA...4AAOSwLbJdKoXF
That's probably what I'll do if I can't find a new OEM tank for a reasonable price. I can get by right now but I know replacement is in my future.
Thanks
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Old 09-08-2019, 08:23 PM   #9 (permalink)
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1979-1983 Radiator Tank Reserve - Original part number is 16470-89106
Updated part number is 16470-89104.

Might not look exactly the same with whats in your truck, but either one should fit just fine.
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Old 09-09-2019, 12:00 PM   #10 (permalink)
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1979-1983 Radiator Tank Reserve - Original part number is 16470-89106
Updated part number is 16470-89104.

Might not look exactly the same with whats in your truck, but either one should fit just fine.
If the pictures are right, both of those are only coolant tanks. Even if they were to bolt up I would need to purchase a separate windshield washer tank and mount it somewhere.
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Old 09-10-2019, 08:48 AM   #11 (permalink)
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Old 09-10-2019, 02:28 PM   #12 (permalink)
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I got mine from another truck on the property. Just traded.
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