Water Filter for the LG LMX25986ST (LT700P)

LMX25986ST specifics — where the filter actually lives

Finding the bay is the easy part — this chassis puts it in the fresh-food compartment, placement dependent on the dispenser package — usually a kneeling-height or shoulder-height swap, not a teardown. The seat combines push-fit and twist-lock: seat first, rotate second — reversing the order is the only way to fight this bay, and it will not let you.

Two quirks worth knowing before you order: run the first gallon or two through a fresh cartridge before drinking — carbon fines are normal — and reset the indicator so the countdown matches reality. Decode the plate and the parts question answers itself: LM marks the 4-door Max line in LG’s catalog, so cross-referencing cartridges by chassis rather than by door style keeps you out of the wrong-parts queue. Trailing letters like ST denote trim and finish: stainless, panel-ready, handle variants. The water path is identical across them.

LM vs LF — what the prefix tells you

Know your LM from your LF and the cartridge question halves: The door count differs — 4-door Max against French-door — but the bay and the cartridge order do not. read the code as 25 cubic feet of capacity, which tells you the cartridge’s real workload between changes.

Swap it in 5 minutes

• Press the release (if fitted), twist the old cartridge free, and pull it from the header.
• Wet the new cartridge’s o-ring with cold tap water so it seats without dragging.
• Push the cartridge square onto the header, then give it the locking quarter turn.
• Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.

What this filter takes out of your water

Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.

LMX25986ST filter questions