1993 BMW 740iL 3 Way; Expansion Tank to Water Accumulator to Heater Core;. 1994 BMW 740iL 3 Way; Expansion Tank to Water Accumulator to Heater Core;. Part Type: HVAC Heater Hose. Heater Hose. Notes: 3 Way; Expansion Tank to Water Accumulator to Heater Core;.
