Thermostat Kit – Fits Mercury/Mariner 70-125 HP 2-Stroke (Replaces 803061T1) 3.3-5 2-Stroke What is the difference between

What is the difference between this mechanical pump and an electric one

Built for marine environments with standard cooling systems

The best way to confirm fitment is to check the "Engine & Model Compatibility" table on this page and

Unbolt and carefully remove the lower unit from the outboard's driveshaft housing

Thermostat Kit – Fits Mercury/Mariner 70-125 HP 2-Stroke (Replaces 803061T1) 3.3-5 2-Stroke What is the difference betweenProduct Details This Thermostat Kit Fits Mercury Mariner 70 125 HP 2 Stroke (Replaces 803061T1) provides a reliable, direct fit replacement for maintaining the cooling system on inline 3 & 4 cylinder outboards from 1987 and newer. Engineered to regulate engine temperature, this kit ensures your motor operates within its optimal temperature range, preventing both overheating and overcooling. This component is a direct interchange for Sierra 18 3569,