Direct answer
The NC501 uses Ninja's 24 oz XL Deluxe tub system. The current official two-pack is XSKPNTLD2, and the official page lists NC501 explicitly. The 16 oz XSKPLID2CD Original pint and XSK7PNTLD2 Scoop & Swirl pint are different systems.
Compatibility ledger
OFFICIAL RECORDS| Item or model | Compatible system | Verdict | Research note |
|---|---|---|---|
| XSKPNTLD2 / 24 oz XL Deluxe tubs | NC501 and listed NC500 / NC600-series variants | Fits | NC501 appears in SharkNinja's current compatible-model list. |
| 814KKU500 single Deluxe tub | NC501 accessory family | Fits | SharkNinja lists this single tub with current NC501 bundles and parts. |
| XSKPLID2CD / 16 oz Original pints | NC299 / NC300 / NC350-series machines | Does not fit | The Original pint page explicitly excludes the NC500 series. |
| XSK7PNTLD2 / Scoop & Swirl pints | NC700-series machines | Does not fit | This is a dedicated soft-serve pint family. |
Why 24 oz matters
The NC501 is part of the XL Deluxe family. Capacity is a quick warning sign: a 16 oz Original pint is not a smaller substitute for the 24 oz Deluxe tub.
Read the full NC501 suffix
The official XSKPNTLD2 page lists NC501, NC501C, NC501H, NC501HBL, NC501HGN and NC501HRD. If your label has another suffix, confirm that exact SKU before ordering instead of assuming the series covers it.
Do not transfer lid claims
A tub and its storage lid belong to the same accessory family. A listing that mixes Original, Deluxe and Swirl terminology should be treated as unverified until it names NC501 and the correct part number.
PRIMARY SOURCES