GM 12558059 Vortec Cylinder Head Pair V8 5.0L 305 Chevy MerCruiser 938-802556 Gimbal Parts Heat exchanger tube 910161 /

Heat exchanger tube 910161 / 0910161 (FYI the part number of the piece bolted into the intake manifold is GM 6269950)

This can be used to replace the threaded style connections if you were to REPLACE / UPDATE THE CABLE AS WELL (This has the dimensions of the old double threaded steering helms)

Turbo Four 4

This would have been found on some early (1960's) 6cyl Mercury applications  700 6cyl 70hp

GM 12558059 Vortec Cylinder Head Pair V8 5.0L 305 Chevy MerCruiser 938-802556 Gimbal Parts Heat exchanger tube 910161 /Parts Included OMC Cobra Volvo Penta 3857663 MerCruiser 938 802556 > 938 802566T > 938 8M0087884 GM Part Number 12558059 Compatibility Generally the best practice is to just match your existing casting numbers. Found on MerCruiser OMC GM Chevy V8 305cid 5. 0L 5. 0LX Models 1996 2012 Used with the standard 1 piece Rear Main Seal engines. Center Bolt Valve Covers VORTEC Head 8 Bolt Intake Manifold Other Information Overall good condition Cleaned &