Quick answer - search for OEM 52027784 or the Chinese CH3014113 which is a coolant reservoir for a 1978-1993 Dodge D100 / D150 / D200 / D250 / D300 / D350 / D400 / D450. Costs anywhere from $15 for a Chinese knock off to $50 for a Genuine Mopar.
I wanted to reply to this thread
https://www.irv2.com/forums/f25/radi...nt-399826.html but was not allowed because it is old and figure someone will be looking for this info in the future - I know I did.
My 1993 Winnebago Vectra 5.9 came with a tiny little overflow tank that the previous owner had installed. I think he mentioned it had been replaced twice as the first one cracked. It was the universal overflow tank that's ~$16 on Ebay and is probably exactly what the people on the other thread were buying at O'Reilly.
I ran it with this tank for ~6 years until I noticed a crack in it in the spring, but didn't leak yet.
Wanted to replace it with something better, but wasn't sure if the universal metal ones would fit. So after looking at pictures of overflow tanks from various vehicles for many hours I found that a 1978 to 1993 Dodge Ram Pickup Truck Coolant Recovery Reservoir is an exact fit - including the mounting holes. Capacity is probably 3-4x of what the universal one had (which makes a lot more sense to me considering how big the radiator is).
It bolted right on and the previous one disintegrated into pieces on removal, so I timed the replacement well.
Linear Mode
