TracTuff M28 to -16 AN Adapter
$27.95
Originally offered as a direct screw in port adapter for the J Series cylinder head water outlets but becoming a useful connection for anything that has an M28 x 1.50 thread and seals via crush washer. Recently use on the back of the B Series blocks for crankcase ventilation and to feed coolant into B and H Series cylinder heads for those running dry deck blocks!
NOTE: Requires the use of the Honda crush washer (90401-PR4-000).