Outboard Engine Cooling System – Impeller, Water Pump & Thermostat
Cooling System for Outboard Engines – Impeller, Housing, Water Pump & Thermostat
A properly functioning cooling system is essential for optimal performance and to prevent overheating of your outboard engine. In our outboard engine cooling system category, you’ll find all essential components to keep your engine cool and safe: impellers, impeller housings, water pump repair kits, and thermostats.
The impeller pumps water through the engine to ensure correct cooling. The impeller housing holds the impeller in place and directs water efficiently through the engine. Water pump repair kits often include impeller, gaskets, and seals for easy and complete service. The thermostat regulates the engine’s operating temperature for optimal performance and long engine life. All parts are available for popular brands such as Suzuki, Yamaha, Mercury, Honda, Tohatsu, and Evinrude.
Impellers and repair kits – ensures proper water flow
Impeller housings – directs water and protects the engine from overheating
Water pump repair kits – complete kits with impeller, gaskets, and seals
Thermostats – regulate engine temperature for optimal performance
Marine-grade parts for long-lasting durability
Suitable for both 2-stroke and 4-stroke outboards
Replace worn parts regularly or during maintenance to ensure a fully functioning cooling system. With the right components, you protect your engine, prevent overheating, and ensure reliable operation on the water all year round.
Thermostat housing, 60°C. The additional seals, gaskets, clamps and attaching hardware sold separately. See your owner's manual or service manual for more information. 135‑175hp L4, 200‑400hp L6, and 400R L6 FourStroke outboards.
Includes thermostat and housing that fits Mercury 75-90-115 HP FOURSTROKE 1B366823 & up, 75-90-115/115 PRO XS HP FOURSTROKE 2B094996 & up, 150 EFI FOURSTROKE 1B905505 & up
For Mercury Optimax 75 hp through 115 hp 2-stroke outboards and Mercury 30 hp through 350 hp 4-stroke outboards, and MerCruiser Alpha One Gen II and Vazer sterndrives. See your owner’s manual for replacement schedule.
This extensive kit fits Mercury and Mariner outboards from the 65hp- (4-cylinder) V6 outboards with short vane impellers. It also fits MerCruiser I, R, MR and Alpha One drives (serial No. 2495186-0D469858). See your owner’s manual for replacement schedule. See your service manual for installation instructions.
Includes 49°C degree thermostat and gaskets. Fits various Mercury/Mariner 6‑25 hp. 2 cycle outboards. See application chart for specific engine models.
Includes 120 degree thermostat, thermostat gasket, washer and cover gasket. Fits various Mercury/Mariner 70‑125 hp. 2 cycle outboards (1987 and Newer). See application chart for specific engine models.
Includes 43°C degree thermostat and gaskets. Fits various Mercury / Mariner 40/50/55/60 hp. 2 cycle 3-cyl outboards. See application chart for specific engine models.