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David Clark Hybrid Boom Assembly w/ PTT M-2 Microphone (18740G-40)
Restore clear, reliable communications and convenient push-to-talk control with the genuine David Clark Hybrid Boom Assembly with PTT. This OEM replacement boom is designed for compatible David Clark headset setups using an M-2 microphone configuration.
Genuine David Clark OEM hybrid microphone boom assembly
Integrated Push-To-Talk (PTT) control for quick transmission
Designed for M-2 / M-2H microphone boom configurations
Helps restore stable mic positioning and smooth boom operation
Ideal for headset maintenance, repair shops, and refurbishment
The David Clark 18740G-40 Hybrid Boom Assembly with PTT is an OEM replacement microphone boom designed for compatible David Clark aviation headsets that use an M-2 / M-2H microphone setup. Featuring an integrated push-to-talk switch, this boom assembly supports fast, reliable transmissions while maintaining the stable microphone positioning pilots need for clear cockpit communication. Worn boom joints, damaged wiring, or unreliable PTT performance can lead to intermittent audio and frustrating transmissions—especially in high-use training and operational environments. Replacing the boom assembly with the correct David Clark OEM part helps restore dependable communication performance and long-term headset reliability.
Technical Specifications
Manufacturer: David Clark Company
Part Number: 18740G-40
Product Type: Hybrid Microphone Boom Assembly
Microphone Compatibility: M-2 / M-2H configurations (per parts listings)
PTT Function: Yes (integrated Push-To-Talk)
Pack Quantity: 1 each
Country of Origin: United States
Export Classification: EAR99
Condition: New
Compatibility: Used in select David Clark headset microphone boom assemblies (model-specific)
Best priced around great and speedy service!
Also is the better of the 2 options since it is rated at 5,000 psi, not that I go to that high of pressure but I like the safety and security knowing that my chances of it blowing up in my face are a whole lot better and I can also purchase replacement seals for them at the same shop!!!
I bought the DC PTT because I know and trust the DC quality/durability to hold up to using every day. And so far it’s the best PTT I’ve used. I have a couple other no-name PTTs and the cable sheathing is crumbling and falling off. The DC PTT has worked even in sub zero cabin temp conditions when I didn’t have a functioning heater. I bought two to have a spare but the first one has been working great for 300hrs so far.
