AKG 2040M02120 - Outer headband F. K171 MKII, K 172 HD

AKG 2040M02120 - External headband for K171 MKII and K172 HD (original replacement)

The AKG 2040M02120 reference is the original outer headband used in the AKG K171 MKII and AKG K172 HD headphones. This part forms the upper rigid frame of the self-adjusting support system and is key to maintaining the fit, stability and durability of the assembly. As an OEM replacement , it respects the tolerances and factory fit, allowing a direct replacement if the headband has cracked, deformed or is loose.

Main features

• Genuine AKG part to ensure compatibility and fit identical to the original.
• Verified compatibility : K171 MKII and K172 HD.
• Exploded view location : position 1 (Outer headband) on both models.
• Complete integration with the self-adjusting system: works together with the inner band ( headband strap ), the sliders and the suspension rubbers.
• Direct replacement : no modifications required; installs using original hardware and covers.

Product benefits

• Restores factory comfort and fit , preventing cups from falling off or unevenly tightening.
• Extend the life of your headset by replacing only the damaged structural part.
• Professional maintenance : clean and reliable solution for studios, broadcasting, rental or intensive use.

Compatibilities and related references

• Associated headband strap : K171 MKII P/N 2908Z35010 ; K172 HD P/N 2908Z35020 .
• Elements of the headband system used in this platform: Wedge P/N 2040Z36020 , Rubber loop P/N 2040M03030 , Slider P/N 2040Z17260 , Ejot 22×8 screws P/N 0099N22040 , Cover caps P/N 2040Z18020 and End Cover P/N 2040Z52010 .
• Not compatible with other AKG variants that use different outer headbands: for example, K240/K240 MKII use P/N 2040M02100 and K271 MKII uses P/N 2040M02130 .

Frequently Asked Questions

How many units do I need?
One per earpiece. The outer headband is a single piece (position 1) in the set.

Does it include the inner band and the rest of the parts?
No. Reference 2040M02120 corresponds only to the outer headband. The inner band, sliders, rubbers, hardware, and caps are supplied with their specific part numbers.

Can I assemble it without technical experience?
Assembly is simple if you follow the service manual : remove the side covers and hardware, replace the headband, and reassemble. If in doubt, we recommend consulting qualified personnel.

Description for projects

Original AKG outer headband for K171 MKII and K172 HD headphones; part number 2040M02120 ; exploded view position 1 ; mechanical replacement of the upper frame compatible with inner band 2908Z35010 (K171 MKII) and 2908Z35020 (K172 HD); associated system elements: 2040Z36020 (wedge), 2040M03030 (rubber loop), 2040Z17260 (slider), 0099N22040 (screw 22×8), 2040Z18020 and 2040Z52010 (caps).