Mercury – Corrosion Guard Engine Protect | Rust Inhibitor Spray | 12 oz | 8M0172753

Overview

If you spend enough time around boats, you learn one thing quickly: corrosion never sleeps. Salt air, moisture, and heat are always working their way into every corner of your engine compartment. That’s why so many boaters I know keep Mercury Corrosion Guard Engine Protect 8M0172753 within arm’s reach. It’s the sort of product you use once and immediately wonder why you didn’t start years ago. Just a quick spray under the cowl, and you’ll feel that familiar peace of mind — the kind that makes you relax a little deeper into the helm seat, knowing your engine is shielded even when the weather and water are doing their worst.

Key Features

• Forms a thin, water-resistant protective barrier on painted and unpainted metal
• Convenient 12-ounce spray can with attachable straw for targeted application
• Dries to a clean, lightweight coating that won’t gum up linkages or attract debris
• Safe for use around paint, rubber, plastic, and electrical components
• Effective for corrosion protection on boats, cars, ATVs/UTVs, motorcycles, tools, and more
• Produced to Mercury Marine OEM standards for long-term dependability

Engine & Boat Compatibility

Perfect for protecting corrosion-prone areas on:

• All Mercury and MerCruiser outboards requiring under-cowl rust protection
• Two-stroke and four-stroke engine blocks, brackets, and exposed components
• Freshwater and saltwater setups, from pontoons to offshore center consoles
• Any metal surfaces on personal watercraft, fishing boats, sailboats, or trailer rigs

Performance & Practical Benefits

The first thing you’ll notice when using Corrosion Guard is how clean and quick it feels. There’s no heavy residue, no sticky buildup — just a smooth, protective layer that settles in seconds. That’s huge when you’re working under a tight cowling where dirt tends to collect. The coating stays put without turning into sludge, even after weeks of on-the-water use.

Boat engines see moisture from every angle: salt spray, rain, condensation, even wash-downs. Corrosion Guard acts like a steady, invisible shield, helping keep rust from creeping into bolts, brackets, ignition components, hinges, and that vulnerable engine block surface. It also helps prevent corrosion during winter storage, long off-seasons, or when your boat sits unused between trips.

For anyone who trailers their rig, lives near the coast, or runs in brackish water, it’s one of the simplest, most practical steps you can take to keep your engine performing the way it should — tight, smooth, and reliable.

Why Buy OEM

Mercury designs products for people who actually use their boats, not just polish them. With OEM-grade protection, you get:

• A formula built specifically for marine metals and coatings
• Long-term rust prevention you won’t get from generic sprays
• Safe use around Mercury’s electrical connectors and modern engine materials
• Confidence that you’re using what Mercury recommends for its own engines
• Better long-term reliability and fewer repairs from corrosion-related damage

As any seasoned boater will tell you, OEM isn’t just branding — it’s about protecting the investment you count on every time you turn the key.

FAQ Section

Q1: Which Mercury systems does this product protect?

Any Mercury outboard, sterndrive, or under-cowl metal surface needing rust prevention.

Q2: What makes it different from hardware-store rust sprays?

It’s engineered specifically for marine heat, moisture, and material compatibility. No gumming, no staining, no electrical issues.

Q3: How do I know if I need it?

If your engine sees moisture — saltwater, freshwater, storage, or even humid air — you’ll benefit from using it.

Q4: Can it be used in both freshwater and saltwater environments?

Definitely. It’s formulated to protect under the harshest marine conditions.

Q5: Is it easy to apply?

Just spray and let it dry. The attachable straw helps reach tight spots. Most boaters add it as part of routine maintenance.