---
product_id: 530992273
title: "Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50, 1 Gallon"
brand: "quicksilver"
price: "921 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/530992273-quicksilver-877770q1-extended-life-coolant-anti-freeze-pre-diluted-50
store_origin: DK
region: Denmark
---

# 5-year, 1,000-hour extended life Pre-diluted 50/50 with de-ionized water Specifically for MerCruiser sterndrive/inboard engines Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50, 1 Gallon

**Brand:** quicksilver
**Price:** 921 kr
**Availability:** ✅ In Stock

## Summary

> 🛥️ Cruise Confidently with Quicksilver’s Ultimate Engine Armor

## Quick Answers

- **What is this?** Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50, 1 Gallon by quicksilver
- **How much does it cost?** 921 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/530992273-quicksilver-877770q1-extended-life-coolant-anti-freeze-pre-diluted-50)

## Best For

- quicksilver enthusiasts

## Why This Product

- Trusted quicksilver brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready-to-Use Formula:** Pre-mixed 50/50 with de-ionized water for hassle-free installation—no guesswork, just reliable performance from the first pour.
- • **Industry-Trusted Standards:** Meets ASTM D-3306 and D-4340 certifications, guaranteeing top-tier quality and peace of mind on every voyage.
- • **Long-Lasting Engine Shield:** Enjoy up to 5 years or 1,000 operating hours of premium corrosion and freeze protection—engineered to keep your marine investment safe.
- • **Marine-Grade Compatibility:** Specifically designed for MerCruiser closed cooling systems, ensuring perfect fit and optimal engine health every time.
- • **Clean & Efficient Chemistry:** Silicate and phosphate free, preventing gelling and buildup to maintain peak cooling efficiency and engine longevity.

## Overview

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.

## Description

Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50, 1 Gallon

## Features

- For use in all MerCruiser closed cooling sterndrive or inboard gasoline engine applications
- Provides 5-year, 1,000 operating hour extended life protection
- Silicate and phosphate free
- Ethylene glycol based, pre-diluted to 50/50 mix with de-ionized water
- Will not cause gelling
- Compatible with conventional anti-freeze
- Meets ASTM D-3306, ASTM D-4340 requirements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **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

## Images

![Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/81AM+bJCUeL.jpg)

## Available Options

This product comes in different **Style** options.

## Frequently Bought Together

- Quicksilver 877770Q1 Extended Life Coolant Anti-Freeze, Pre-Diluted 50/50 – 1 Gallon
- Quicksilver by Mercury Marine 25W-40 Marine Engine Oil
- Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-23*