Coolant expansion tank
VW Bus and camper parts#engine#water-cooled#coolingView count unavailable1 definition
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The pressurized tank in the water-cooled Vanagon cooling circuit that accommodates coolant expansion and provides a fill and bleed point. It is separate from the low-pressure coolant refill reservoir; the names are sometimes confused in parts listings.
10/27/2026Vanagon Dictionary editorial reference
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