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 A.5.138

La Marzocco A.5.138 FITTING G3/8M H30 WR27 S/S, water sensor

Regular price $39.69

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

Ensure flawless water level control and prevent costly machine failures with the genuine **FITTING G3/8M H30 WR27 S/S, water sensor (Part \# A.5.138)** from Kaldi.com. This critical component is engineered to provide precise and reliable boiler water level readings, a necessity for maintaining optimal steam and brewing temperature stability in your commercial espresso machine. **Is your espresso machine not filling the boiler?** The water level sensor is often the culprit, and this OEM replacement offers a reliable solution. Key features include durable Stainless Steel (S/S) construction for maximum corrosion resistance and longevity, a male G3/8 thread for secure, leak-free installation, and a compact H30 profile. This part is essential for machines that rely on electronic monitoring to protect the heating elements from burning out due to low water.

The A.5.138 water sensor fitting boasts a specialized design that integrates both the G3/8M fitting and the contact point for the water probe (sold separately), guaranteeing perfect electrical conductivity and mechanical fit. **Solve the problem of inconsistent water levels** and enjoy peace of mind knowing your machine is protected against dry-firing. This component is compatible with many commercial espresso machine brands and models utilizing this standard sensor size. Proper usage involves applying appropriate thread sealant and ensuring the sensor probe is correctly tightened to guarantee accurate water detection within the boiler. When you experience **"low water level" errors on your display**, replacing this fitting and its associated probe is the definitive preventative and corrective maintenance measure.

Investing in this genuine Stainless Steel water sensor fitting translates directly into reduced downtime and extended equipment life. Specifications confirm its G3/8 male threading, 30mm height (H30), and corrosion-resistant materials, making it ideal for the high-pressure, high-temperature environment of an espresso machine boiler. Don't let a faulty sensor lead to expensive heating element damage; choose the FITTING G3/8M H30 WR27 S/S, water sensor (A.5.138) for guaranteed performance. This fitting is an indispensable repair for any technician looking to maintain the integrity of the machine's primary water control system.

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 #A.5.138 fits La Marzocco machines. 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.

Compatibility for this specific La Marzocco part is currently being indexed. Because many parts from this manufacturer are cross-compatible, we rely on technical feedback. If you know this is a match for a specific machine, please contact us to help us verify and add it to our list.

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 La Marzocco including this fitting g3/8m h30 wr27 s/s, water sensor ship directly from their warehouse. Please email or chat to confirm availability prior to ordering.
Yes. Part #A.5.138 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.
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.
All La Marzocco parts come with a 365-day manufacturer's warranty. Contact us for specific warranty details.
All La Marzocco parts come with a 30 day return policy. Please see our refund policy or chat for more details.

Commercial Coffee Machine Part Manufacturers