Sierra 189350C Heavy Duty Extended Life Antifreeze Coolant 1 Gallon

Sierra 189350C Heavy Duty Extended Life Coolant is a full-strength, concentrated antifreeze designed for demanding marine and heavy-duty applications. This premium yellow coolant provides exceptional protection against corrosion, cavitation, and freezing while extending service intervals significantly.

Key Features:

• Full-strength concentrated formula for maximum flexibility in dilution ratios
• Extended service life of up to 7 years or 15,000 hours between changes
• Advanced corrosion inhibitor technology protects aluminum, cast iron, copper, brass, and solder
• Yellow color for easy identification and leak detection
• Compatible with most marine engines, generators, and heavy-duty equipment
• Bilingual English/French packaging

This 1-gallon jug provides convenient storage and pouring for marine and powersports cooling system service. Sierra's heavy-duty formula meets or exceeds OEM specifications for extended life coolants, making it an excellent choice for both routine maintenance and complete system flushes.