Just finished the bypass on the car - definitely a DIY job until I can replace the heater core inside the dash, and everything else. I hope it holds.....items I purchased:

(1) 3/4" Heater Hose - 3ft.
(2) 2 Universal 3/4" 90 degree elbow adapters
(3) Clamps

I went ahead and routed the hose from the heater valve, behind the firewall, and to the driver side hose. Worked well so far, no heat - but that's expected.

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200 75 W115 (Mom's)
190e 90 2.6 W201
E320 95 Wagon W124
72 BMW 3.0 CSI