I know the hose you're talking about and I don't know what it's called. The '87 cars don't have a windshield washer heater so it isn't that. Call Phil at PartsShop and I'm sure he can get you the right hose. I'm sure they aren't terribly expensive.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold