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Detail Images

  • MSR - Attached To Hose
  • MSR - Guardian Prefilter Replacement -
  • MSR - Attached To Hose -

Current Color

  • MSR - Guardian Prefilter Replacement -

MSR Guardian Prefilter Replacement

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

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Leaves and dirt aren't good to drink.

The MSR Guardian Filter is the most advanced filter on the market, but it won't work if it's clogged full of sticks, leaves, and dirt. The Guardian Prefilter Replacement Unit keeps larger debris from getting sucked up the intake hose and jammed into the filter, so you can keep the Guardian working efficiently for its full 10,000-liter life without needing to replace the hollow fiber filter.

  • Compatible with the MSR Guardian
  • Removes sediment and debris
  • Item #CAS006C

Tech Specs

Purifying Element
Field Cleanable
Recommended Use
backpacking, camping
Manufacturer Warranty
1 year

Tech Specs

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Unanswered Question

Can this be paired with my MSR Miniworks, idea is to prevent the filter from clogging when filtering muddy water(same goes to sediment and debris), to avoid frequent scrubbing.