Kidde Mariner KD57W-5BC PWC Fire Extinguisher
- 5-B:C rating for flammable liquids and electrical fires
- 2.5 pound dry chemical, single use
- 8 to 12 second discharge, 6 to 8 foot range
- Aluminum and stainless steel parts, strap bracket
- UL listed, 12 year limited warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A small single-use unit sized for personal watercraft, with Coast Guard approval. Larger vessels may need extra units, and it is not for kitchen or wood fires.
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ASIN: B07YYXP3G9Model: KD57W-5BCCategory: Fire Extinguishers
Overview
Pulling the pin and squeezing the lever releases a dry chemical to knock down a small fire on the water. A strap bracket mounts it where you can reach it quickly. A pressure indicator shows when it is charged.
Compact size and a simple pull, aim, squeeze and sweep routine make it quick to use in an emergency. The metal valve and lever are built for marine wear. Its coverage is narrow and it is single use, so it must be replaced after discharge.
Who it's for
A personal watercraft or small boat with a bracket mount is the intended place for it. Owners of larger vessels should add more units, and household use calls for a unit rated for ordinary combustibles.
Pros and cons
- Coast Guard approval for personal watercraft
- Pressure indicator shows charge
- Strap bracket for mounting
- Corrosion resistant metal parts
- Single use only
- Class B and C fires only
- Must be replaced after twelve years
Performance notes
The dry chemical interrupts the fire and the discharge lasts only a few seconds, so aim at the base of the flames. The pressure indicator reads green when charged. Range is limited, so you must stay close.
Specifications
| Brand | Kidde |
|---|---|
| Model | KD57W-5BC |
| Capacity & performance | |
| Agent capacity | 2.5 lb. Dry Chemical |
| Discharge range | 6-8 feet |
| Construction & materials | |
| Construction | Aluminum and stainless steel, metal valve assembly |
| Warranty & support | |
| Warranty Description | 12-year limited manufacturer's warranty |
| Other details | |
| Discharge time | 8-12 seconds |
| Rating | 5-B:C |
| Fire types | Flammable liquids and gases (Class B), electrical equipment (Class C) |
| Item Type Name | Fire Extinguisher for personal watercraft |
| Certification | UL Listed |
| Pressure indicator | Arrow in green means charged |
Frequently asked questions
Is one extinguisher enough for my boat?
The description says recreational boats over 26 feet may require more than one.
Can I recharge it?
No. The description says single use only.
How do I use it?
The description gives the PASS method: Pull, Aim, Squeeze, Sweep.