MSR Guardian Pump Replacement Cartridge

Marsoni

M251S

$119.97

Get it in 3 business days with 1 day shipping. Friday, May 29

MSR Guardian Pump Replacement CartridgeThis replacement filter cartridge restores your Guardian Purifiers flow rate, and lasts up to 10,000+ liters. Removes viruses, bacteria, protozoa, and particulates, like dirt and sediment.

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Your MSR Guardian Pump Replacement Cartridge orders ship within 1-2 business days.

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I added a center channel speaker, and it was partially blocking the remote sensor. This solution works like a charm and has an easy setup. One end points towards the existing IR, and the other end goes where you are going to point the remote to. The only suggestion is to include a USB connector with the product, so I don't need to find one.

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Reviewed in the United States on May 6, 2026

Verified Purchase

Stacy Moots

Bozeman, US

★★★★★ 5

Very good signal repeater

Style: 1 to 1 IR Repeater

Fantastic product! I have a center channel for my surround sound that blocks the infrared sensor on my Sony Bravia TV that never works. I always have to get up to turn the TV on or off as well as other functions. So I purchased this product and it worked like a charm. Very simple to install, took less than 5 minutes . I didn’t have no compatibility issues. It was plugged play . Simply stick on the transmitting sensor by the receiving sensor on the TV and then the extended sensor for receiving from your remote control put where you would like it, lastly plug in the USB plug into any 5V power block and you’re done. Now I have no issues with range with controlling my TV, which is great.!👏🏼. Definitely a good product. I would highly recommend…

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Reviewed in the United States on November 10, 2025

Verified Purchase

Peter M. Klein

Lexington, US

★★★★★ 5

Easy to Set up

Style: 1 to 1 IR Repeater

Works great. Have Sonos playbar mounted behind TV and it does not support eARC, only IR, for use with AppleTV remote. This solved problem.

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Reviewed in the United States on May 17, 2026