Sierra 18-70948 Molded Cooling System Hose for Mercruiser

The Sierra 18-70948 is a precision-molded cooling system hose designed specifically for Mercruiser stern drive engines. This molded hose connects the cooler to the thermostat housing, providing a critical link in your engine's cooling system.

Key Features:

• Pre-molded design ensures proper fit and full water flow through bends
• Constructed with EPDM tubing and synthetic knit reinforcement for durability
• Engineered to withstand harsh marine environments and temperature extremes
• Designed for both fresh water and raw water cooling systems
• OEM quality construction meets or exceeds original equipment specifications

Sierra molded hoses are engineered to be exact replacements, providing correct fit, form, and function. The molded construction eliminates kinking and ensures consistent coolant flow, while the reinforced EPDM material resists degradation from salt water, heat, and chemicals. Each Sierra marine engine part is manufactured to meet the demands of high horsepower marine engines and deliver reliable, long-lasting performance.