CMM Offroad Coupler Cork - Industrial (ISO 6150 B / B-Style)
Warranty Information
Vendor warranty summary
CMM Offroad Warranty
At a glance: No written warranty published — we handle defects with the brand for you
This is CMM Offroad's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.
What to expect
CMM Offroad doesn't publish a written warranty that we could find. In practice, parts that arrive damaged or show a manufacturing defect are handled between us and CMM Offroad — you don't have to chase the brand on your own.
What CMM Offroad does publish
- Defective or damaged items can be exchanged (per the return policy)
- Site header claims parts are CNC machined and backed by a lifetime quality guarantee, but no details are given
- Contact CMM Offroad support before sending anything back
- Have your order number / proof of purchase ready
- Ship to CMM Offroad, 1472 Murphy Hollow Rd, Cumberland Furnace, TN 37051 using tracked shipping for items over $75
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to CMM Offroad, and help it along either way.
Shop CMM Offroad at NVMOS
See all CMM Offroad products, lead times and FAQs →
Disclaimer: The information on this page describes CMM Offroad's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: CMM Offroad official policy pages. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.
About the brand
CMM Offroad is a Tennessee machine shop with a motorsport background that builds CNC-machined Jeep parts. NVMOS carries its grab handles, doors-off mirrors, ball mounts, shifters and steering parts for Wrangler and Gladiator owners who spend more time with the doors off than on.
Based in: Cumberland Furnace, Tennessee · Made in: USA (Tennessee) · Lead time: From CMM: about 6 business days, custom up to 15; NVMOS stock 24–48 hours
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Warranty terms are set by CMM Offroad, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
This Coupler Cork is a machined aluminum plug that closes off an unused female air coupler until you are ready to connect a hose. Onboard air systems sit where dirt, mud, dust, sand and water are part of the job, and an open quick-connect lets all of it in. The plug snaps into a compatible coupler the way the mating air fitting would, which helps keep contaminants away from the internal components.
CMM Offroad CNC machines it in the USA from 6061-T6 aluminum as the standard choice, or 7075-T6 if you want substantially higher strength in the same compact design. Every plug is Cerakote finished, and a stainless steel split-ring retainer comes with it so the plug can be tethered near the coupler rather than dropped and forgotten.
Fitment
It fits 1/4 inch Industrial couplers, ISO 6150 Series B, Fed Spec A-A-59439, also known as B-Style. These are the 1/4 inch quick-connect female couplers commonly found on onboard air systems running 3/8 inch hose. Automotive 1/4 inch Tru-Flate (T-Style) couplers use a different plug profile and are not interchangeable, so those need the Automotive Coupler Cork instead.
Where it works
Couplers mounted on bumpers, underhood air systems, compressor installs, air tanks, manifolds, exterior air connection points and shop equipment.
Questions before you order?
Fitment questions are easier to settle before the box ships. Call or text Carl & Anton at (920) 249-7744 or use the chat — real humans in Sheboygan, Wisconsin, not a call center.
Specifications
CMM Offroad Coupler Cork FAQs
Which coupler style does this fit?
1/4 inch Industrial couplers: ISO 6150 Series B, Fed Spec A-A-59439, also known as B-Style.
Will it work on a Tru-Flate T-Style coupler?
No. Automotive Tru-Flate couplers use a different plug profile, so you want the Automotive Coupler Cork.
Should I pick 6061 or 7075?
6061-T6 is the standard option. 7075-T6 is the premium option with substantially higher material strength in the same compact design.
Does it come with a way to tether it?
Yes, a stainless steel split-ring retainer is included.
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