Perfect Fit for Honda 4-Stroke Outboards: Direct replacement OE# 19300-ZV5-043 & 19351-ZV5-000, compatible with Honda BF20/BF25/BF30/BF40/BF50/BF75/BF90/BF115/BF130HP outboard motors built from 1999 to 2003.
Complete Thermostat & Gasket Combo Kit: Comes with 1pcs thermostat + rubber seal + green mounting gasket in one set, all necessary hardware included for one-time installation without extra spare parts purchase.
Premium Anti-Corrosion Raw Materials: Copper and brass core plus durable rubber components resist seawater erosion and extreme temperature swings, ideal for long-term marine harsh working environments.
Precise Engine Temperature Regulation: Accurately controls cooling system circulation to stabilize operating temperature, prevents engine overheating or cold-start excessive fuel consumption and cylinder wear.
Plug-and-Play Direct Installation: Strictly manufactured per original factory dimension standards, matches original mounting position perfectly for quick DIY swap of failed, stuck or leaking stock thermostats.