While working (onboard) on the cooling system of my late model A4 the exhaust manifold, aft water exit fitting (a very corroded brass nipple) broke off while trying to remove it, leaving old corroded thread material stuck in the threads of the manifold water outlet. Can anyone give me the size of this water outlet? Is it 3/8" NPT? 1/2" NPT? Can anyone recommend a good tool/size/brand to clean out this mess? I would imagine an appropriate thread chaser.
Thanks.
Jim
Thanks.
Jim
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