I know this is for cars, but what about it sitting in the hot sun or freezing cold inside the car? Does it need special protection?

Fire extinguishers are designed to fight fires, which are hot. What good would it do for an extinguisher to blow up when the temperature reaches nonlethal levels? You can bet that it gets a lot hotter inside a burning house than it does inside your car or truck on a sunny day. Look for one that displays the Underwriters Laboratory label (UL rated). The laboratory requires that extinguishers can be safely stored at minus-40 to plus-120 degrees, a standard that is sometimes posted on the extinguisher. But the laboratory also requires that extinguishers survive 175 degrees for seven days, which is not normally disclosed in product information. A quality, UL-listed extinguisher has a steel cylinder that is designed to withstand six times its normal pressure without bursting.

How does the mounting system work? What do you mount it to in your car? Do you have to drill holes or modify the car in some way?

To mount securely you would have to drill holes. This one is actually fairly small so you might be able to secure with those double sided tape pieces with the tabs on that can be removed damage free.

Does it have a pressure gauge?

Model AUTO5 does not have a pressure gauge. It has a pressure indicating stem (green in color) on the top of the head. If the stem is down (hidden) that indicates the pressure is low, possibly inoperable. If you look at pics 1 and 3, they show both sides of the head...ring-pin on one side, nothing on the other. More from First Alert: https://www.firstalert.com/product/auto-fire-extinguisher-ul-rated-5-bc-red/

how many pounds of chemicals inside?

The label states “2.43 lbs. + 2 oz.” of a bicarbonate. I don’t know why They express it in that fashion. Overall unit when filled is is 4 lbs.

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First Alert Fire Extinguisher | Personal Watercraft Fire Extinguisher, FE5R-PWCNA

First Alert Fire Extinguisher | Personal Watercraft Fire Extinguisher, FE5R-PWCNA

Product ID: 397861786

Details

Alarm
Audible
Brand
First Alert
Colour
White
Global Trade Identification Number
Item Weight
1 Pounds
Manufacturer
BRK Brands

⚓USCG Size I Certified

🔥UL 5-B:C Multi-Fire Class Rated

🧪Sodium Bicarbonate Dry Chemical Agent

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MOP$1676

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Description

🔥 Stay Ready, Stay Protected — Fire Safety That Fits Your Lifestyle ⚓

TRUSTED PEACE OF MIND - Highly rated by thousands, this extinguisher is your reliable partner for emergency preparedness on water and land.
INSTANT READINESS CHECK - One-button pressure test ensures your extinguisher is always primed and ready—no guesswork needed.
COMPACT LIGHTWEIGHT DESIGN - At just 1.4 lbs and slim dimensions, it fits seamlessly in personal watercraft compartments or your home.
CERTIFIED FIRE FIGHTING POWER - ANSI/UL711 and CAN/ULC-S508 tested with UL 5-B:C rating to tackle flammable liquids & electrical fires.
MARINE GRADE SAFETY ASSURANCE - Meets stringent U.S. Coast Guard Size I standards for ultimate watercraft protection.

The First Alert FE5R-PWCNA is a compact, lightweight fire extinguisher designed specifically for marine use, meeting U.S. Coast Guard Size I requirements. Certified to ANSI/UL711 and CAN/ULC-S508 standards with a UL 5-B:C rating, it effectively combats flammable liquid and electrical fires using a sodium bicarbonate dry chemical agent. Featuring an easy one-button pressure test and a sleek design, it offers professional-grade fire safety for personal watercraft and beyond.

Specifications

ASIN	B07KK6NJNN
Alarm	Audible
Brand	First Alert
Built-In Media	Fire Extinguisher
Colour	White
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 4,102 Reviews
Global Trade Identification Number	00029054003744
Item Type Name	Fire Extinguisher
Item Weight	635 g
Manufacturer	BRK Brands
Mfr Part Number	FE5R
Model Number	FE5R-PWCNA
Number of Items	1
Power Source	Battery Powered
Product Style	Personal Watercraft Extinguisher
Style	Personal Watercraft Extinguisher
UPC	029054003744
Unit Count	1.0 Count

Reviews

J**R

Perfect for at home and boat/jetski

This fire extinguisher gives me peace of mind at home. It’s compact and lightweight, making it easy to store in the kitchen or even in the car. The instructions are clear and easy to follow in an emergency. I appreciate that it’s UL rated 5-B:C, which means it’s effective for multiple fire types (gasoline, grease, electrical, etc.). The build feels solid, and the pressure gauge is easy to read. Hopefully, I’ll never need to use it, but it’s reassuring to have one ready. A great investment in safety that every home and vehicle should have. Also safe to to say I have one that a bought for my jetski and it fit perfect!

2.09.2025

T**C

It is a fire extinguisher

it puts out FIRES !!!!!

8.02.2021

T**A

Perfect fit replacement

Perfect fit replacement for a very much expires extinguisher in my coleman trailer.

30.01.2026

6**B

Nice factory replacement

Just what I was looking for. Perfect fit 1997 GTX sea do.

7.02.2021

D**.

Came quickly, with mounting hardware, as advertised.

1.04.2026

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