"OT-57 T.E.A. Treated" Group Head Jet M8×1.25 – Hole Ø 1.5mm

This group head jet suits Nuova Simonelli espresso machines. Replacing a worn or blocked jet restores proper water flow through the group head, preventing uneven extraction and weak shots. The M8×1.25 thread and 1.5mm hole diameter are designed for Appia, Aurelia, and Aurelia II models.

The jet features T.E.A. (Thermal Energy Accumulator) treatment, a surface finishing process that optimises thermal performance and water dispersion. The M8×1.25 thread ensures secure fitment, while the 1.5mm hole diameter controls flow rate for consistent extraction.

Specifications

• Thread: M8×1.25
• Hole diameter: 1.5mm
• Treatment: T.E.A. (Thermal Energy Accumulator)
• Reference code: OT-57

Compatible Part Numbers