Thermostat Repair Kit (140°F) – Fits Mercruiser 2.5L/3.0L 120/140/165 HP (Replaces 59078Q3, 59078T3, 59078T4) 270HP 5L DFI 115 2-Stroke 35-853333T

5L DFI 115 2-Stroke 35-853333T V6 engine Mercury OptiMax 2

46-96148A5

876294) with your engine's service manual or existing parts

including a drill

Thermostat Repair Kit (140°F) – Fits Mercruiser 2.5L/3.0L 120/140/165 HP (Replaces 59078Q3, 59078T3, 59078T4) 270HP 5L DFI 115 2-Stroke 35-853333TProduct Details This Thermostat Repair Kit (140F) Fits Mercruiser 2. 5L 3. 0L 120 140 165 HP Engines is engineered to restore proper engine operating temperature in a range of GM based MerCruiser powerplants. It's designed for 4 cylinder (2. 5L 3. 0L) and 6 cylinder inline engines manufactured between 1964 and 1997, ensuring reliable performance in raw or freshwater cooling systems. This kit serves as a direct replacement for Mercruiser part numbers