Don't Leave Your Air Coupler Wide Open.
Your onboard air system lives where dirt, mud, dust, sand and water are part of the territory. An exposed quick-connect coupler gives all of it somewhere to go.
The CMM Offroad Coupler Cork – Automotive provides a simple, purpose-built way to protect an unused female air coupler until you're ready to connect your hose.
Precision CNC-machined in the USA, it pushes directly into a compatible 1/4" Tru-Flate (Automotive / T-Style) female quick-connect fitting just like the mating air plug would. Once installed, it helps prevent contaminants from reaching the internal components of the coupler.
Check Your Fitment
This version fits 1/4" Tru-Flate couplers, also known as Automotive or T-Style.
It is not interchangeable with our Industrial Coupler Cork, which fits 1/4" Industrial couplers (ISO 6150 Series B, Fed Spec A-A-59439, also known as B-Style). The two plugs have different nose profiles, so choose the one that matches your coupler. Not sure which you have? Compare the nose of the plug that connects to your coupler with the photos above, or reach out and we'll help.
Choose Your Material
6061-T6 Aluminum
Our standard Coupler Cork provides an excellent combination of durability, corrosion resistance and lightweight performance.
7075-T6 Aluminum
For customers who want the premium option, our 7075 version provides substantially higher material strength while maintaining the same compact design.
Cerakote® Finished
Every CMM Coupler Cork receives a Cerakote finish for additional surface protection and the finished appearance you'd expect from CMM Offroad.
Available in:
- Bare Aluminum
- Black Cerakote
- USMC Red Cerakote
Designed for Onboard Air
Ideal for compatible Tru-Flate (T-Style) female couplers mounted on:
- Bumpers
- Underhood air systems
- Compressor installations
- Air tanks
- Air manifolds
- Exterior air connection points
- Shop and service equipment
Retain It. Don't Lose It.
Each Coupler Cork includes a stainless steel split-ring retainer, providing a durable attachment point for tethering the plug near the coupler so it's there when you need it.
Product Details
- Fits 1/4" Tru-Flate (Automotive / T-Style) female couplers
- CNC machined aluminum construction
- Choice of 6061-T6 or 7075-T6 aluminum
- Cerakote® protective finish
- Black and USMC Red color options
- Stainless steel split-ring retainer included
- Helps block dirt, mud, sand, dust and moisture
- Quick push-in installation and removal
- Reusable
- Compact, lightweight design
- Designed and machined in the USA
- Small Part. Important Job.
You've invested in your compressor, air lines, air tools, fittings and onboard-air system. Don't leave the connection point exposed.
Plug it. Protect it. Hit the trail.