# La Marzocco GS3 > Espresso compatibility data from EspressoFit. Confidence: **manufacturer (Tier 1 — manufacturer primary source read firsthand)**. > Sources last read firsthand: 2026-07-04. > Canonical page: https://espressofit.com/machines/la-marzocco-gs3/ ## Specifications - **Portafilter diameter:** 58 mm - **Basket type:** non-pressurized - **Grouphead standard:** 58mm commercial - **Brand:** La Marzocco ## Compatible baskets and parts - IMS B70 Competition 1 Cup (B701TH26.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup/ - IMS B70 Competition 1 Cup H18.5 (B701TH18.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h18-5/ - IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h19-5/ - IMS B70 Competition 1 Cup H24.5 (B701TH24.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h24-5/ - IMS B70 Competition Convex 2 Cup (B702TCH26E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup/ - IMS B70 Competition 2 Cup H22.5 M Pattern (B702TH22.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h22-5-m/ - IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h24-5/ - IMS B70 Competition 2 Cup H26.5 (B702TH26.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h26-5/ - IMS B70 Competition 2 Cup H28.5 M Pattern (B702TH28.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h28-5-m/ - IMS B70 Competition Convex 2 Cup H20 (B702TCH20E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h20/ - IMS B70 Competition Convex 2 Cup H22 (B702TCH22E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h22/ - IMS B70 Competition Convex 2 Cup H24 (B702TCH24E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h24/ - IMS B70 Competition Convex 2 Cup H28.5 (B702TCH28.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h28-5/ - IMS B70 Competition NanoQuartz 2 Cup H20 (B702TFH20NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h20/ - IMS B70 Competition NanoQuartz 2 Cup H22 (B702TFH22NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h22/ - IMS B70 Competition NanoQuartz 2 Cup H24 (B702TFH24NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h24/ - IMS B70 Competition NanoQuartz 2 Cup H26 (B702TFH26NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h26/ - IMS B70 Competition NanoQuartz 2 Cup H28 (B702TFH28NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h28/ - La Marzocco Advanced Precision Basket (F.3.026–F.3.028) (58mm basket) — https://espressofit.com/baskets/la-marzocco-advanced-precision/ - VST Precision 58mm Filter Basket (18g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision/ - VST Precision 58mm Filter Basket (15g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision-15g/ - VST Precision 58mm Filter Basket (20g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision-20g/ - VST Precision 58mm Filter Basket (22g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision-22g/ - VST Precision 58mm Filter Basket (25g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision-25g/ - VST Precision 58mm Filter Basket (7g) (58mm basket) — https://espressofit.com/baskets/vst-58mm-precision-7g/ - IMS MA200IM Integrated Membrane Shower Screen (La Marzocco) (shower-screen) — https://espressofit.com/parts/ims-ma200im-shower-screen-la-marzocco/ - IMS MA200NT Nanotech Membrane Shower Screen (La Marzocco) (shower-screen) — https://espressofit.com/parts/ims-ma200nt-shower-screen-la-marzocco/ - La Marzocco Convertible Portafilter (portafilter) — https://espressofit.com/parts/la-marzocco-convertible-portafilter/ - La Marzocco Standard European Convex Tamper (tamper) — https://espressofit.com/parts/la-marzocco-convex-tamper/ - Normcore Magnetic Dosing Funnel V2 (58mm) (dosing-funnel) — https://espressofit.com/parts/normcore-dosing-funnel-58mm/ - Normcore Espresso Puck Screen 58.5mm (316 stainless) (puck-screen) — https://espressofit.com/parts/normcore-puck-screen-58mm/ ## Notes Verified against La Marzocco's official product pages on 2026-07-04. The GS3 follows the same pattern as the Linea Mini: La Marzocco doesn't print "58mm" on the machine page itself, but its own Home-line portafilter statement confirms the 58mm standard, and the machine ships with standard 7/14/17g non-pressurized baskets and a convex tamper. ## Sources - https://home.lamarzoccousa.com/product/gs3/ - Official La Marzocco Home (USA) product page, read firsthand 2026-07-04. Lists included accessories: 'Single-spouted & double-spouted portafilters', 'Portafilter Baskets: 7 gram, 14 gram, 17 gram, & cleaning basket' (standard non-pressurized baskets) and a 'Standard European La Marzocco Convex Tamper'. Note: like the Linea Mini page, this page does not print a numeric portafilter diameter — see the second source. - https://home.lamarzoccousa.com/product/linea-micra/ - Official La Marzocco Home (USA) page, read firsthand 2026-07-04, stating verbatim that the Home-line convertible portafilter is 'Compatible with all La Marzocco Home machines along with standard 58mm tampers' — La Marzocco's own confirmation that its Home machines, the GS3 included, use the standard 58mm portafilter/tamper size. --- Compatibility reference, not a substitute for your machine's manual. Every claim above cites the source it came from; see https://espressofit.com/methodology/ for how entries are verified. Corrections: corrections@espressofit.com.