Mercury Antifreeze -100°F 55 Gallon 8M0073204
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Mercury Antifreeze – -100°F – 55 Gallon – 8M0073204
Protect engines and plumbing systems during cold weather with Mercury Antifreeze 8M0073204. This genuine Mercury OEM water-system antifreeze is designed for winterizing marine engines, sterndrives, and onboard plumbing systems.
Formulated with non-toxic propylene glycol, this antifreeze provides strong burst protection while also protecting internal engine components from corrosion. The blue-green dyed formula allows technicians to easily verify that antifreeze has fully circulated through the system during winterization.
Key Features
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Genuine Mercury Marine / Quicksilver OEM antifreeze
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Burst protection to -100°F (-73°C)
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Non-toxic propylene glycol formulation
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Helps prevent corrosion of aluminum, copper, brass, and solder
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Safe for rubber seals, hoses, and cooling system components
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Blue-green dye improves visibility during winterization
Part Details
OEM Part Number: 8M0073204
Mercury Reference Number: 92-8M0073204
Product Type: Marine water-system antifreeze
Temperature Protection:
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Burst protection: -100°F (-73°C)
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Freeze protection: approx. -58°F to -63°F (-50°C to -52°C)
Container Size: 55-gallon drum (208 L)
Compatible Mercury & MerCruiser Applications
Designed for winterizing marine engines and onboard water systems, including:
Mercury Outboard Engines
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Mercury 2.5HP – 400HP outboards
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Mercury FourStroke outboards
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Mercury Pro XS outboards
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Mercury Verado outboards
MerCruiser Sterndrive & Inboard Engines
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MerCruiser 3.0L
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MerCruiser 4.3L V6
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MerCruiser 5.0L V8
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MerCruiser 5.7L V8
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MerCruiser 6.2L V8
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MerCruiser 7.4L V8
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MerCruiser 8.2L V8
Additional Applications
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Raw-water cooling systems
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Livewell and wash-down plumbing
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Boat freshwater systems
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RV or seasonal plumbing winterization
Function
Marine antifreeze protects cooling systems and plumbing from freeze damage during storage. It displaces water inside the system and prevents expansion that can crack engine blocks, pumps, hoses, or plumbing fittings.
Using Mercury marine antifreeze helps:
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Prevent engine block and cooling system freeze damage
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Protect metal components from corrosion
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Winterize boat plumbing and raw-water systems
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Extend the life of marine engine cooling components
Important Compatibility Note
This product is designed for winterizing raw-water systems and is not the same as engine coolant used in closed-cooling systems. Always follow the manufacturer’s winterization procedures for proper application and dilution instructions.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.