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❄️ Keep your engine cool and cruising longer—because your boat deserves the best!
Quicksilver 877770Q1 Extended Life Coolant is a pre-diluted 50/50 antifreeze designed for MerCruiser closed cooling sterndrive and inboard gasoline engines. It offers up to 5 years or 1,000 operating hours of protection, is silicate and phosphate free to prevent gelling, and meets rigorous ASTM standards, ensuring premium marine engine performance and longevity.





| ASIN | B00BO88OY6 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #113,569 in Automotive ( See Top 100 in Automotive ) #150 in Antifreezes & Coolants |
| Brand Name | Quicksilver |
| Compatible with Vehicle Type | boats with MerCruiser sterndrive or inboard gasoline engines |
| Container Type | jug" or "bottle |
| Customer Reviews | 4.7 4.7 out of 5 stars (14) |
| Flash Point | 118 °C |
| Included Components | End Product |
| Item Weight | 188 g |
| Liquid Volume | 1 gallons |
| Manufacturer | Quicksilver |
| Manufacturer Part Number | 877770Q1 |
| Model Number | 877770Q1 |
| Size | Unspecified |
| UPC | 745061039551 |
| Unit Count | 128 Fluid Ounces |
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