Breville 58mm Portafilter Assembly (SP0001817)

verified · 26 August 2026

Part type: Portafilter
Size standard: 58mm
Brand: Breville

Fits these machines

Breville Dual Boiler (58mm portafilter)
Breville Oracle (58mm portafilter)
Breville Oracle Dual Boiler (58mm portafilter)
Breville Oracle Jet (58mm portafilter)
Breville Oracle Touch (58mm portafilter)

Breville’s own 58mm portafilter assembly — the replacement handle-and-basket holder for its 58mm machines, as distinct from the 54mm assembly that fits the Barista and Bambino line.

Which Brevilles this is for

Breville sells two portafilter formats and they do not interchange. This is the 58mm one: the Oracle line and the Dual Boiler. If you have a Barista Express, Bambino, Pro or Touch, you need the 54mm assembly instead — see Breville 54mm vs 58mm, which is the single most common fitment mistake on this brand.

Breville names only the Oracle Jet (BES985) on the part page itself, in its “Works With” block. The other four machines listed below are cross-referenced on the strength of their own Breville product pages, each of which states a 58mm portafilter. That is the same basis used for Breville’s other 58mm parts here.

A portafilter is not just a diameter

Worth saying plainly, because it is the one place this database cannot give you a complete answer. A basket is decided by diameter; a portafilter also has to twist and lock into the group, which depends on the ear or lug spacing — and essentially no manufacturer publishes that figure, Breville included.

Within one maker’s own line that is not usually a problem: Breville’s 58mm machines share a group, and Breville sells one 58mm assembly for them. Across makers it very much is, which is why you should not assume this fits a non-Breville 58mm machine just because the number matches. See why “58mm” isn’t one standard.

Also fits the same machines

Other items confirmed to fit machines this one fits — useful if you're kitting out a single setup. The count is how many of those machines overlap; nothing here is a new fitment claim.

Breville 58mm Filter 1 Cup Dual Wall (SP0001765) (58mm basket) — shares 5 machines
Breville 58mm Filter 2 Cup Single Wall (SP0001880) (58mm basket) — shares 5 machines
Breville 58mm Sandblasted Filter Basket 2 Cup (SP0110500) (58mm basket) — shares 5 machines
Breville 58mm Single Wall Filter Basket 1 Cup (SP0016051) (58mm basket) — shares 5 machines
Breville Distribution Duo 58mm (Distribution tool) — shares 5 machines
Breville Filter 1 Cup Single Wall 58mm (SP0001763) (58mm basket) — shares 5 machines

FAQ

What size is the Breville 58mm Portafilter Assembly (SP0001817)?: It is a 58mm portafilter, for 58mm portafilter machines.
Does the Breville 58mm Portafilter Assembly (SP0001817) fit 54mm Breville machines?: No. It is 58mm, so it fits 58mm-standard machines, not Breville's 54mm Barista/Bambino line.
Which machines does the Breville 58mm Portafilter Assembly (SP0001817) fit?: Breville Dual Boiler; Breville Oracle; Breville Oracle Dual Boiler; Breville Oracle Jet; Breville Oracle Touch — each confirmed against manufacturer sources (listed below).

Sources

https://www.breville.com/us/en/parts-accessories/parts/sp0001817.html (archived) — Official Breville (US) replacement-part page, read firsthand 2026-08-26. Product name verbatim: 'Portafilter Assembly 58mm', described as 'Portafilter Assembly 58mm for selected Breville Espresso Machines.' The page's own 'Works With' block names one model explicitly — 'the Oracle® Jet - BES985'. Breville does not enumerate the rest on the part page, so the remaining cross-references below come from each machine's own official product page, all of which state a 58mm portafilter.
https://www.breville.com/en-us/product/bes920 (archived) — Official Dual Boiler BES920 page, read firsthand 2026-07-13: states a '58mm' portafilter, which is the basis for cross-referencing this assembly to the Dual Boiler alongside the Oracle line.

Spot an error? The fastest fix is the source itself —send us the manufacturer page that contradicts this entry and we'll correct it and cite it. See how we verify.