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La Marzocco B.1.004 Steam Valve Complete, GS3 (B.1.004.01-.03) | Fits GS3

Name: La Marzocco B.1.004 Steam Valve Complete, GS3 (B.1.004.01-.03) | Fits GS3
Brand: La Marzocco
SKU: LM:B.1.004
Price: 166.61 USD
Availability: InStock

$166.61

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 the high-volume steaming performance of your La Marzocco GS3 espresso machine with the genuine Steam Valve Complete, GS3 (B.1.004.01-.03) (Part # B.1.004). This critical OEM assembly includes the entire valve mechanism required for flawless steam and hot water operation, encompassing the valve body, internal seals, and mechanism. Engineered specifically for the GS3-AV and GS3-MP models, this complete unit ensures a perfect, leak-free fit and maintains the machine's factory-specified flow rate and pressure tolerance. Using this precise, high-quality component is essential for accurate control and safety in a commercial or high-end home environment.

Installing a new La Marzocco GS3 Complete Steam Valve is the most reliable way to maintain consistent drink quality and efficient workflow. If you are experiencing problems like a **leaking La Marzocco steam wand** or **La Marzocco GS3 hot water tap not working**, replacing the entire valve assembly guarantees restoration of pressure integrity and smooth, responsive control. This unit is built to withstand intense thermal stress and repetitive use, significantly extending the time between service intervals and ensuring your barista can achieve perfect milk texture without interruption.

Don't let a faulty valve compromise your espresso service; solve the problem of **inconsistent GS3 steaming pressure** or a **broken La Marzocco steam valve handle** by investing in this genuine OEM replacement. This complete assembly eliminates the guesswork involved in complex rebuilds, providing a definitive fix. For peak performance, the B.1.004 Steam Valve Complete is the mandated, quality-assured solution to minimize downtime and prevent the potential safety risk associated with worn-out seals and mechanisms.

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 valve complete, gs3 (b.1.004.01-.03) compatible with my La Marzocco machine?

This Part #B.1.004 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.1.004 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.1.004 in stock?

Parts from La Marzocco including this steam valve complete, gs3 (b.1.004.01-.03) 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.1.004 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.