Add a 5 lb bag of custom roasted coffee to your parts order and get an extra 25% off our wholesale coffee prices!

Mazzer M28099

Mazzer M28099 Major/Robur Manual / Automatic Doser (old style)

Regular price $729.90

This part ships directly from Mazzer and stock is not guaranteed. Lead time averaging 7 to 9 business days for ground shipments, 1 to 2 business days for Overnight.

If unavailable, the item will be backordered. If you have any questions check parts sheets below description. Please email or chat to confirm availability prior to ordering.

Description Details

Restore the core functionality and precision of your older Mazzer Major or Mazzer Robur grinder with the genuine Manual/Automatic Doser (Old Style), Part \# M28099. This crucial dosing chamber assembly is designed specifically for legacy models, ensuring a perfect fit and seamless operation, which is essential for maintaining consistent shot quality. Features include the complete housing, dosing star, and lever mechanism, allowing baristas to reliably dispense pre-ground coffee into the portafilter either manually or automatically (depending on the grinder version). If you are experiencing **inconsistent dosing with your old Mazzer grinder**, replacing the worn doser is the definitive solution to prevent weight variation and improve espresso extraction reliability.

The key benefit of replacing your doser with the OEM Mazzer M28099 is the immediate restoration of consistency and hygiene in your workflow. Over years of use, the internal doser components wear down, leading to inaccurate measures and residual grinds—a common **problem with aging Mazzer dosers**. This new, old-style doser assembly eliminates the stale coffee that builds up in damaged units, guaranteeing every dose is fresh and precisely measured. Installing this replacement part ensures that high-volume cafés can maintain efficiency and quality control, transforming unreliable dosing into flawless consistency.

The Mazzer Major/Robur Manual / Automatic Doser (Old Style) (M28099) is robustly constructed to meet Mazzer’s commercial standards. It is easy to install for experienced technicians and is vital for grinders where precise volumetric dosing is required. Stop struggling with **old Mazzer Robur doser not working** or worn-out mechanisms; invest in the M28099 doser assembly today to prolong the life of your premium grinder and secure the precise dose needed for consistently perfect espresso shots.

Descriptions are for reference only. We do our best to fill in the blanks when manufacturers don’t provide descriptions, but details can vary. We strongly recommend checking with the manufacturer for the exact part number you need. Ordering based on the part number—rather than the description—is the best way to ensure compatibility.

Frequently Asked Questions

This Part #M28099 fits Mazzer machines, including the Doser, Major - Super, Robur series. Compatibility may be specific to the machine's production year and model. Please consult the technical PDFs and compatibility data on this page to confirm a match for your specific unit before finalizing your purchase.

Our current database shows fitment for the Doser, Major - Super, Robur series. However, many Mazzer components are interchangeable across different platforms. If you have successfully installed Part #M28099 on a model we haven't listed, please let us know so we can update our records for the community.

If you are unsure of the fit, do not guess. To prevent downtime, please view our Compatible Parts Diagrams to check the exploded view PDF for your specific unit, or message our parts team for assistance.

Parts from Mazzer including this major/robur manual / automatic doser (old style) ship directly from their warehouse. Please email or chat to confirm availability prior to ordering.
Yes. Part #M28099 is a 100% genuine OEM component sourced directly from the Mazzer factory. Using original parts ensures your equipment maintains its factory-spec pressure ratings and safety certifications.
Lead times for Mazzer parts typically range from 7 to 9 business days depending on availability. Next Day Air parts usually ship within 1 to 2 business days.
All Mazzer parts come with a 365-day manufacturer's warranty. Contact us for specific warranty details.
All Mazzer parts come with a All sales final return policy. Please see our refund policy or chat for more details.

Commercial Coffee Machine Part Manufacturers