Sea-Doo Open Loop Cooling Kit
Open-loop cooling conversion kit for selected Sea-Doo 1630 ACE 230/300 applications.
Model & year fitment
Match the exact model, engine and year. Fitment and stock availability are separate checks.
“Needs a fitment check” means we need to confirm your setup before ordering. Required hardware may be sold separately; confirm what is included. A model or year absent from this chart is unconfirmed.
Compare product fitment →Product details
Open-loop cooling conversion kit for selected Sea-Doo 1630 ACE 230/300 applications. It changes the head-cooling path to a raw-water circuit. Confirm your model, year, existing cooling plumbing and installation plan with GT40 before ordering.
Fitment & setup
What changes in the cooling system?
The conversion routes raw water through the head-cooling path. Confirm the hose routing, flow regulator and connections for your exact installation before starting work.
What comes with the kit?
The kit is listed with a cover or housing, cooling hose, a flow regulator, fittings, clamps, O-rings and installation hardware. Ask GT40 to confirm the packing list for your setup.
What should I send for a fitment check?
Send your model, year, engine and photos of the existing cooling hoses and connections. Request the current installation, regulator and flushing instructions before altering the cooling system.