bought a Nissens unit from FCP (Nissens according to FCP is the OE part) and side by side you could visually see a quality difference between the 2. The Nissens tank has been holding up beautifully.
Pros: holding up beautifully, quality difference
Owner reviews for expansion tank
Manufacturers
My Nissens expansion tank seems to be holding up very well
Pros: holding up well
I'd recommend only the original expansion tank. That tank usually outlasts all other aftermarket ones.
Pros: outlasts aftermarket ones
Vehicle:
BMW
Just change my original 01 expansion tank, cause i changed my Radiator. Part held 170000km and 23 years. Just get another original one ;)
Pros: long lifespan, high durability
Vehicle:
BMW
Mileage: 170000 km
I've had the original one fail back in 2016, replaced with genuine BMW replacement and it's been good as gold.
Pros: good as gold
Vehicle:
BMW
I have a newish expansion tank and cap from Mahle. I think my cap is from the premium line but the inside colouring underneath the cap is already washed off and the plastic feel and finish of the expansion tank seems a bit lacking. However I have completed 10k in it now and no problems whatsoever.
Pros: no problems
Cons: poor finish
Mileage: 10000 km
i’m still rolling with a dorman expansion tank just because it was the only thing available on hand when the original one failed, no leaks yet
Pros: no leaks
I recently replaced my expansion tank with an NRF one. However within a week it’s already leaking from the bottom.
Cons: leaking within a week
I purchased a new expansion tank for my BMW e46. Initially, I opted for a Dorman expansion tank from AutoZone, but I wasn’t entirely convinced by my choice. Unfortunately, I observed that the AutoZone tank was leaking from the top, which left me puzzled. I wondered if this issue was due to it being an aftermarket part. This year alone, I’ve had to replace the tank five times, which has been quite frustrating.
Cons: leaking from top, frequent replacement
Vehicle:
BMW
The expansion tank with 'mit Silikat' sign has silicate bags known to split and block the heater matrix with silica crystals, potentially costing thousands in repair bills. This design by VW was an attempt to prolong coolant life.
Cons: silicate bags split, blocks heater matrix, costly repairs
Vehicle:
Skoda Octavia
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