

🛥️ Cruise Confidently with Quicksilver’s Ultimate Engine Armor
Quicksilver 877770Q1 Extended Life Coolant is a pre-diluted 50/50 antifreeze solution designed exclusively for MerCruiser sterndrive and inboard gasoline engines. Offering up to 5 years or 1,000 operating hours of protection, it’s silicate and phosphate free to prevent gelling and corrosion. Meeting ASTM D-3306 and D-4340 standards, this marine-grade coolant ensures reliable, long-lasting engine performance and peace of mind on every trip.





| Brand | Quicksilver |
| Vehicle Service Type | boats with MerCruiser sterndrive or inboard gasoline engines |
| Flash Point | 118 Degrees Celsius |
| UPC | 745061039551 |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | Quicksilver |
| Size | Unspecified |
| Model | 877770Q1 Extended Life Coolant Anti-Freeze – Pre-Diluted 50/50 – 1 Gallon |
| Item Weight | 6.6 ounces |
| Package Dimensions | 11.69 x 7.48 x 3.78 inches |
| Item model number | 877770Q1 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 877770Q1 |
| OEM Part Number | 877770Q1 |
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