280077 - Miller Digital Infinity Replacement Auto-Darkening Lens Assembly

Genuine Miller Replacement Lens for Digital Infinity Helmets

The Miller 280077 Lens Assembly is the definitive OEM replacement component designed specifically for the Miller Digital Infinity™ Series of welding helmets. As a critical safety component, the auto-darkening filter (ADF) is the heart of your welding hood, providing the necessary eye protection and visibility required for precision work. Over time, electronic components can degrade, or accidents can damage the lens unit. This assembly allows you to restore your helmet to factory specifications without the expense of replacing the entire hood.

This unit is a direct replacement that supersedes the previous part number 271321. Miller Electric has engineered this assembly to meet the rigorous standards of professional welders, ensuring that switching speeds, sensitivity, and shade accuracy are maintained. The Digital Infinity series is renowned for its massive viewing area, and this replacement assembly preserves that expansive field of view, allowing operators to see more of the weld pool and surrounding work area.

Installation is straightforward, designed to fit perfectly into the retention system of the Digital Infinity shell. By using genuine Miller parts, you ensure that the optical clarity rating and safety certifications of your personal protective equipment remain intact. Whether you are replacing a damaged unit or upgrading from the older 271321 model, the 280077 assembly provides the reliability and performance expected from Miller Electric products.

Key Features:

• Direct Fit: Engineered exclusively for the Digital Infinity shell for a seamless seal and fit.


• Updated Technology: Replaces and supersedes part number 271321.


• OEM Quality: Guarantees consistent auto-darkening performance and optical clarity.


• Cost-Effective Repair: Extends the service life of your premium welding helmet.