Kidde 466179MTL M5G Mariner 5 2 lb BC Marine Fire Extinguisher – 5-B:C with Strap Bracket

Kidde 466179MTL M5G Mariner 5 Marine Fire Extinguisher

The Kidde 466179MTL M5G Mariner 5 is a compact marine fire extinguisher designed for Class B flammable-liquid and Class C energized-electrical fire hazards. It contains approximately 2 lb of sodium bicarbonate BC dry chemical agent and carries a 5-B:C UL rating.

The M5G combines a lightweight seamless aluminum cylinder with metal operating components, an easy-to-read pressure gauge and an included plastic retention strap bracket. Kidde identifies this configuration as U.S. Coast Guard and DOT approved and suitable for regular marine use.

Key Features & Benefits

• 5-B:C UL rating: Designed for Class B flammable-liquid and Class C energized-electrical fire hazards.
• 2 lb BC dry chemical agent: Sodium bicarbonate extinguishing agent for common fuel and electrical fire hazards.
• Compact marine design: Approximately 11.3 inches high with a 3.25-inch cylinder diameter.
• Lightweight aluminum cylinder: Provides corrosion-resistant construction without excessive weight.
• Pressure gauge: Allows quick visual verification that the extinguisher is charged and ready for use.
• Metal operating components: Aluminum and steel valve, handle and lever construction.
• Easy-to-pull safety pin: Designed for straightforward emergency operation.
• U.S. Coast Guard approved: Approved when fitted with the supplied mounting bracket.
• DOT approved: Kidde identifies this configuration as DOT approved.
• Retention strap bracket included: Helps secure the extinguisher aboard the vessel.
• Disposable design: Single-use extinguisher should be replaced following discharge.
• 6-year limited warranty: Manufacturer warranty specified for the M5G configuration.

Kidde 466179MTL M5G Specifications

BC Protection for Common Marine Fire Hazards

The M5G carries a 5-B:C UL rating for two common types of marine fire hazards:

• Class B: Flammable liquids and gases, including common fuel-related hazards.
• Class C: Fires involving energized electrical equipment.

The M5G does not carry a Class A rating for ordinary combustible materials such as wood, paper and cloth. Where those hazards require protection, select an appropriately rated ABC extinguisher.

Compact Marine Fire Protection

At approximately 11.3 inches high with a 3.25-inch diameter cylinder, the M5G provides a compact mounting footprint for recreational boats and other marine applications.

The extinguisher discharges for approximately 8–12 seconds with an effective range of approximately 4–6 feet.

Where Is the Kidde M5G Best Used?

• Recreational boats
• Fishing boats
• Powerboats and motorized watercraft
• Marine areas with fuel-related fire hazards
• Areas containing energized electrical equipment
• Locations requiring a compact 5-B:C extinguisher

M5G vs. the Current Kidde MAR5

The 466179MTL M5G and Kidde's current MAR5 are both 2 lb, 5-B:C, single-use marine fire extinguishers, but they should not be treated as the same ordering number or product generation.

The M5G is the older Mariner 5 configuration with a 6-year limited warranty and approximately 4–6 ft. discharge range. Kidde's current MAR5 incorporates its newer Mariner construction and 12-year service-free design. Always order by the exact Kidde part number when a specific configuration is required.

Frequently Asked Questions

What is the Kidde part number for this M5G Mariner 5?

This configuration is Kidde part number 466179MTL.

What types of fires can the M5G fight?

The M5G carries a 5-B:C UL rating for Class B flammable-liquid and Class C energized-electrical fire hazards.

How much extinguishing agent does it contain?

The extinguisher contains approximately 2 lb of sodium bicarbonate BC dry chemical agent.

What is the discharge range?

Kidde specifies an approximately 4–6 ft. discharge range with an approximately 8–12 second discharge time.

Does the extinguisher include a mounting bracket?

Yes. A plastic retention strap mounting bracket is included.

Is the 466179MTL U.S. Coast Guard approved?

Yes. Kidde identifies the M5G as U.S. Coast Guard approved when fitted with the supplied mounting bracket.

Is the M5G rechargeable?

No. Kidde identifies the 466179MTL M5G as a disposable / single-use fire extinguisher. Replace it after discharge.

Is this the same as the current Kidde MAR5?

No. Although both are 2 lb, 5-B:C marine extinguishers, 466179MTL M5G is an older Mariner 5 configuration and MAR5 is Kidde's current-generation Mariner 5 model. Order by the exact part number when a specific configuration is required.