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a device that transfers heat from one fluid to another

Pre-assembled units that can be swapped with faulty ones

A small radiator that transfers heat from engine coolant to air for the cabin heating system. Vanagons may have front and additional rear heat exchangers, depending on equipment and market.

Systems that enable communication and data exchange between vehicle components

The front-mounted heat exchanger in a water-cooled Vanagon's engine-coolant circuit. It releases heat from circulating coolant to outside air. Air-cooled Type 2 buses do not use an engine-coolant radiator.

A heat exchanger that removes heat from engine oil. Air-cooled Type 2 engines use an oil cooler in the engine cooling assembly; design and mounting vary by engine. It is distinct from a Vanagon coolant radiator.

In Gerry’s preserved terminology FAQ, “generation” groups Transporters by body series: T1 (1949–1967), T2 (1968–1979), T3 (1980–1991; called Vanagon in North America), and T4 (1992 onward in that FAQ). In Gerry’s September 2008 “lowered and chopped Vanagon” exchange, contributors identify the same T3 generation as Vanagon in North America and T25 in the UK; replies disagree over whether “T25” is proper usage. The name therefore depends on regional convention and is not a precise model-year identifier. These are historical ranges and naming conventions; verify market and model year.