4404 Replacement Cartridge Silver, 24 Gram with Bayonet

I have been using inflatable life vests mostly for sailing, until I figured out they were ideal for kayaking too, because they are lightweight and less bulky than a typical life vest. And I have never inflated one. That is, until my wife rolled her kayak in two feet of water while launching from a steep river bank. Then I discovered how much it cost to replace the cartridge! We kayak weekly, so I bought two, so I'd have a spare. That was a smart choice, because two weeks later, she rolled it again, trying to land the kayak on a steep bank. So buy extras. I also bought extra bobbins, but despite having some vests for 10 years, the bobbins were still in good shape, and it wasn't necessary to replace them. Nonetheless, you should always have an extra set. I don't know if there are other brands, and I'm not comparing them anyway. This seems to be the standard brand for which most vests are made, so just buy it.

Ordered two replacements, one okay and installed okay. For the other, the Sensor Ring was not attached to the Bayonet, defective, basically making this product useless. And on top of that, Amazon says it can not be returned! It has only been 5 days since delivery. I guess I will have to contest the charge with my credit card company.

I used this rearming kit for a West Marine Inshore Vest. I have used it for years and never had to deploy it until my canoe tipped. The vest inflated as I hit the water like it was supposed to. I had no experience replacing the cartridge and the bobbin but the instructions were right on.BTW, I learned the bobbin is supposed to be replaced every two years. I did not know this.

Rearming kit was shipped fast, and yellow bobbin was only 8 months old, so still fresh. 24 gram CO2 cartridge has correct bayonet mount.

Product exactly as described.

good online price. These are way more expensive at the boat shop. And you should get a new one each year. Test last years by wading into the water with your PFD on. Read the direction on replacement. Tissue paper bobbin needs yearly replacement.

Easy install, fits perfectly and meets mfg. requirements.

worked good in my cabelas automatic life jacket