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u saying above the Thermo housing there is the Hose that comes in from the heater box(runs along side of block Drivers side) and go behind the waterpump the "T" looking bit and the top hose goes up to plenum???..... i had a leak there so i tapped this piece out and welded the end where my pin hole leak was.,,, tapped it back in being only a knock in piece and has been fine since,? i think i know the bit ur on about but hard to explain.
Use a piece of timber or a Long Screwdriver and tap it out it only a knock in piece.. not threaded or moulded..
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