If you don't want to run your heater hoses in one piece through a grommet-lined hole in your bulkhead, this joiner could be the answer.
Accepts 15mm (5/8") hoses.
Mounting plate dimensions 90mm x 41mm. Hole size required 50mm x 18mm.
NOTE: We recommend using the best quality hose clips for any hot water connections inside the cockpit.
BULKHEAD HEATER HOSE JOINER STRAIGHT #SBHJ16ST