-50°F Engine & Water System Antifreeze, Gallon
Mouse Over to Zoom
Click to Enlarge

WEST MARINE-50°F Engine & Water System Antifreeze, Gallon


In stock online.
Model # 499848 | Mfg # 499848NUPC # 25282499847


-50°F Engine & Water System Antifreeze, Gallon

Name Value
Best Use -50 Degrees
Capacity Gallon
Type Antifreeze
Color Pink

Product Overview

Cheap insurance for a long winter.

Winterizing your boat for the off season is an excellent way to protect your investment and avoid costly repairs in the spring. West Marine -50° (-46°C) Marine Antifreeze provides the ultimate in cold weather and corrosion protection for potable water systems, sanitation systems and all engines. Ideal for regions with a mild but freezing winter, this non-toxic formula uses pure virgin propylene glycol for quality and effectiveness. An added benefit of using non-recycled propylene glycol is that residual smell and tastes are reduced.  Corrosion inhibitors have been added to prevent damage to metal engine components and seals. This antifreeze is alcohol free and will not evaporate and leave engine parts and areas of pooled water less protected later in the winter. The bright triple die pink color lets users know when antifreeze has traveled through water lines, sanitation system lines or engine cooling systems; and also serves as an indicator when flushing systems in the spring. For winterizing both engine and water systems, look to West Marine Engine and Water System Antifreeze for a safe, effective, ready-to-use solution.

Key Features

  • Non-toxic virgin propylene glycol formula
  • Meets industry standard for burst protection in copper pipes to -50°F (-46°C)
  • Added inhibitors prevent corrosion in engine components and seals including aluminum, brass, copper and solder
  • Ready to use—does not need to be diluted
  • Safe for potable water systems and engines
  • Alcohol free to reduce evaporation and maintain protection levels throughout the winter
  • Ideal for regions that experience temperature ranges between 14°F to 18°F (-8°C to -10°C); for colder regions we recommend using non-toxic West Marine antifreeze with a -60°F or -100°F rating

For a complete guide to selecting the right antifreeze for your climate and application see Antifreeze 101.


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A