CheeMuii 23-Piece Brass DOT Air Fittings Kit — 1/4, 3/8, 1/2 in Quick Connect
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Description
xOverview
Meet CheeMuii's 23-Piece Brass DOT Air Fittings Kit, a compact, versatile collection designed to support quick, reliable connections for air lines across semi trucks, trailers, and workspaces. Instead of juggling loose fittings, this kit bundles 8x 1/4", 8x 3/8", and 6x 1/2" straight unions along with a tube cutter, giving you the right size for a range of tasks in one purchase.
What’s inside: 23 precision-made DOT fittings plus a sturdy tube cutter, organized so you can grab the right piece fast and get back to the job.
- 8 x 1/4" straight union DOT fittings
- 8 x 3/8" straight union DOT fittings
- 6 x 1/2" straight union DOT fittings
- 1 x tube cutter
Premium brass, proven performance
Crafted from CA360 brass, these fittings resist corrosion and maintain ductility under heat, enabling steady connections when conditions get tough. They meet key industry standards (DOT FMVSS 571.106 and SAE J1131) for air brake components, helping you work with confidence.
- Corrosion resistance supports longevity in harsh environments
- High-temperature ductility reduces risk of stress at vibration points
- Low permeability helps maintain consistent pressure in lines
Effortless, push-to-connect operation
The fittings are designed for tool-free use: simply push the tube into the opening until it seats, then pull lightly to remove. This design speeds maintenance and minimizes downtime on the road or in the shop.
Wide operating range and broad compatibility
These brass DOT fittings are rated for vacuum up to 300 psi and temperatures from -40°F to +200°F (-40°C to +93°C). Always check your tubing manufacturer's limits, but these fittings work well with air brake lines, copper tubing, and general air line work in trucks, RVs, and industrial settings.
- Operates across a wide temperature range
- Suitable for air suspension systems and copper tubing
- Useful for truck, RV, workshop, garden, and towing equipment maintenance
Real-world applications
Keep a ready-to-use kit in your service truck or garage to handle routine repairs, leaks, or upgrades. The compact set helps technicians and DIY enthusiasts improve reliability and speed during everyday air line tasks.
FAQ
Q: Is this kit DOT approved?
A: Yes. It uses CA360 brass and meets DOT FMVSS 571.106 and SAE J1131 for air brake systems.
Q: What’s included in the 23-piece set?
A: Includes eight 1/4 in, eight 3/8 in, six 1/2 in straight union DOT fittings, plus one tube cutter.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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