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

La Marzocco B.1.005 Steam Knob, GS3 | Fits GS3

Name: La Marzocco B.1.005 Steam Knob, GS3 | Fits GS3
Brand: La Marzocco
SKU: LM:B.1.005
Price: 12.79 USD
Availability: InStock

$12.79

This part ships directly from La Marzocco 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 precise steam control and tactile feedback to your La Marzocco GS3 espresso machine with the genuine Steam Knob, GS3 (Part # B.1.005). This critical OEM replacement component is engineered to fit seamlessly onto your machine's steam valve, ensuring effortless and accurate manipulation of steam flow. A key feature is its ergonomic design, offering a comfortable grip and positive rotation, which is essential for consistent milk texturing in a high-volume setting. Investing in a factory-specified knob maintains the premium feel and original functionality of your GS3.

If you are experiencing a frustrating "broken or loose steam knob on La Marzocco GS3," replacing it with the B.1.005 Steam Knob provides the immediate solution. A worn or cracked steam knob can compromise your ability to precisely control the steam power, leading to inconsistent milk foam and wasted time. This genuine part restores the tight, reliable interface required for professional-grade steaming. Its durable construction is designed to withstand the heat and continuous rotational stress of commercial use, guaranteeing longevity and maximizing your steaming efficiency.

Installation is straightforward, allowing qualified technicians to quickly resolve the issue of a "hard to turn La Marzocco GS3 steam valve" by ensuring a perfectly calibrated fit. This steam knob features the precise internal threading and stop mechanism required for your GS3 model's valve stem. Replace your faulty or missing knob today to ensure safe, repeatable, and superior milk-steaming performance, a vital factor in maintaining espresso quality and minimizing barista workflow interruptions.

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

Is this steam knob, gs3 compatible with my La Marzocco machine?

This Part #B.1.005 fits La Marzocco machines, including the GS3 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.

Does this part fit any La Marzocco model not listed above?

Our current database shows fitment for the GS3 series. However, many La Marzocco components are interchangeable across different platforms. If you have successfully installed Part #B.1.005 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.

Is this La Marzocco part B.1.005 in stock?

Parts from La Marzocco including this steam knob, gs3 ship directly from their warehouse. Please email or chat to confirm availability prior to ordering.

Is this a genuine La Marzocco factory part?

Yes. Part #B.1.005 is a 100% genuine OEM component sourced directly from the La Marzocco factory. Using original parts ensures your equipment maintains its factory-spec pressure ratings and safety certifications.

What is the lead time for La Marzocco parts?

Lead times for La Marzocco parts typically range from 7 to 9 business days depending on availability. Next Day Air parts usually ship within 1 to 2 business days.

What is the warranty on La Marzocco parts?

All La Marzocco parts come with a 365-day manufacturer's warranty. Contact us for specific warranty details.

What is the return policy on La Marzocco parts?

All La Marzocco parts come with a 30 day return policy. Please see our refund policy or chat for more details.