TOTO TCU446CRE / ST446EMA Toilet Tank Lid – Aquia IV
TOTO TCU446CRE / ST446EMA Toilet Tank Lid – Aquia IV
Original used TOTO replacement toilet tank lid for the ST446 family.
Fit note: This lid is marked ST446EMA and cross-references the TCU446CRE / ST446EMA family. TOTO tank suffixes matter, so confirm the exact tank marking, measurements, and shape before ordering.
Technical Specifications
- Manufacturer: TOTO
- Lid reference: TCU446CRE / ST446EMA family
- Related tank reference: ST446EMA
- Lid dimensions: Approximately 15 1/2 inches wide × 6 1/4 inches deep
- Toilet family: Aquia IV
- Flush system: Dual flush
- Flush rates: 1.28 / 0.8 GPF for the ST446EMA configuration
- Material: Vitreous china / ceramic
- Item included: Toilet tank lid only
- Condition: Used original replacement part
Confirm Your Fit
Match the number stamped inside your tank or on the underside of your old lid, then compare the measurements and shape in the photos before ordering. Dimensions are approximate and may vary slightly by measurement point.
Normal cosmetic wear may include light scratches, marks, mineral staining, color variation, or other signs of age.
Need Help Identifying Your Lid?
Not 100% sure this is the right lid? Text me photos before ordering and I’ll help narrow down the correct replacement.
Best photos: numbers inside the tank, underside of the old lid, tank opening, and the full toilet. Include measurements and color if known.