Thermador Refrigerator Water Filters — BSH Built-In Family & Fit Pages

Thermador is the ultra-premium line of BSH (Bosch and Siemens Home Appliances), and its built-in refrigerators use the same proprietary BSH filter family as Bosch and Gaggenau — most built-in units resolve to the 11030857 / 00640565 cartridge line.

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Not sure which cartridge your Thermador takes?Every Thermador fit page lists the exact cartridges that fit, the filter location, and the change interval. Open the fridge filter finder →
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Thermador part-number direct lookup

Cross-references listed only where the slot family is in stock — no guessed compatibility.
Brand part numberWhat it isClearFit cross-reference
643898Thermador cartridge pageIn development — check by model
KAD62 series slotsBuilt-in familyIn development — check by model
OPFW-RF300Special slotIn development — check by model
T181D seriesBuilt-in familyIn development — check by model
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Find your Thermador model

Every Thermador model we hold has a dedicated fit page — exact cartridges that fit, filter location, and change interval. Browse all Thermador models by number →

643898 family — 3 models

KAD62 series — 8 models

OPFW-RF300 family — 3 models

T181D series — 22 models

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Thermador refrigerator filter questions, answered

Often — Thermador and Bosch are both BSH brands and the built-in lines share BSH cartridge families (11030857 / 00640565 line). The fit page confirms the exact part for your unit.

Typically inside the refrigerator compartment on the left wall, or behind the lower drawer. Use the full series number (KAD62…, T181D…) — the family suffix matters for the slot.

Yes — if the cartridge in your Thermador still has its part number printed on it (or the old one is in the cupboard), search that number directly. Fit pages list the OEM part number, its aliases, and the ClearFit cross-reference side by side.