Skip to content
Reliable coolant for high horsepower marine engines with long service life.
Sierra Marine Engine Coolant is specifically designed to meet the demands of high horsepower marine engines while providing reliable performance in harsh marine environments. This pre-mixed 50-50 coolant features a hybrid, nitrated HOAT/NOAT formula with an ethylene glycol base, ensuring compatibility with all other coolants. It is formulated to provide year-round protection against freezing and boil-over in all water-cooled engines, making it a practical choice for marine applications.
The coolant comes in a convenient 1-gallon jug and is ready to use, eliminating the need for dilution. With a service life of up to 5 years or 2,500 hours, it offers excellent metal protection and cavitation protection capabilities, ensuring the longevity and efficiency of your engine. Sierra Marine has over 50 years of experience in supplying marine engine and drive parts, making this coolant a trusted choice for boat owners and marine professionals.
Features
- Provides Year-Round Protection Against Freezing And Boil-Over In All Water-Cooled Engines
- Hybrid, Nitrated HOAT/NOAT Formula With Ethylene Glycol Base Is Compatible With All Other Coolants
- 50/50 Is Pre-Mixed With Deionized Water
- Not Intended To Be Diluted
- Provides Excellent Metal Protection And Cavitation Protection Capabilities
Specifications
- Manufacturer: Sierra Marine
- Manufacturer Part Number: 18-9300C
- Type: Pre-Mixed 50-50
- Chemical Base: Ethylene Glycol
- Unit Size: 1 Gallon
- Unit Type: Jug
- Unit Quantity: Single
Technical Documents
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
This item is NOT returnable. For complete details, please see our return policy.
