Upgrade your trailer connection with the Demco 14040-81 adjustable coupler, built for heavy-duty towing and maximum reliability. Designed for use with 3" adjustable channel mounts, this coupler provides flexible height adjustment and secure attachment for large trailers.

Featuring Demco’s EZ-Latch system, this coupler automatically locks onto the hitch ball when lowered—no need to manually latch before hookup.

🔧 Key Features

• ✔ 21,000 lb capacity – Ideal for heavy-duty trailers
• ✔ Fits 2-5/16" hitch balls
• ✔ EZ-Latch system – Drop-on auto-lock design
• ✔ Adjustable height when used with channel bracket
• ✔ Heavy-duty cast steel construction
• ✔ Black powder coat finish for corrosion resistance
• ✔ Bolt-on design for easy installation

🚚 Applications

• Equipment trailers
• Heavy-duty utility trailers
• Dump trailers
• Car haulers
• Construction trailers

📊 Technical Specifications

⚙️ Installation Notes

• Fits standard 3" wide adjustable channel brackets
• Requires (4) 5/8" Grade 5 bolts for full capacity rating
• Mounting hardware sold separately
• Torque bolts to proper specifications

🔁 Common Interchange / Cross Reference

• Demco: 14040-52 (Silver), 14040-95 (Zinc), 14040-97 (Primed)
• Demco Series: 15791-81 (metal handle version)
• Dexter / Redline equivalent: 21K adjustable channel couplers
• Alternate numbers: 18-1404081, 66914040-81, F40-14040-81

⚠️ Note: Confirm channel width (3") and bolt pattern before ordering.

⭐ Why This Coupler Stands Out

• ✔ Industry-trusted Demco EZ-Latch technology
• ✔ No need to open latch before coupling
• ✔ High capacity for heavy hauling applications
• ✔ Adjustable height for multiple tow vehicles

⭐ Why Buy From AAA Trailer?

🚚 Fast Shipping from Michigan – No Drop Shipping
Ships directly from our Michigan warehouse.

📦 In-Stock Inventory
No supplier delays—ready to ship.

⭐ Trusted Trailer Experts

• Accurate fitment guidance
• Fast fulfillment
• Real trailer part specialists
• Quality parts that last

🔧 Frequently Bought Together

• 3" adjustable channel brackets
• 5/8" Grade 5 mounting bolts
• 2-5/16" hitch balls
• Coupler locks and safety pins

💡 Pro Tip

Adjustable couplers are ideal if you tow with multiple vehicles—set your trailer height once and swap tow rigs without issues.

What sets us apart is our dedicated team of knowledgeable professionals who are always ready to assist. Great customer service isn't just a promise—it's the foundation of our success. We invite you to visit our showroom or reach out for personalized advice. Whether you're purchasing online or stopping by, we're here to make your trailer journey seamless. Visit Us Today

• Address: 4675 East Grand River Ave, Howell, MI 48843
• Phone: (517) 225-1991 (Call or text)
• Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment

Thank you for considering AAA Trailer. We're excited to help you hit the road with confidence! If you have any questions, don't hesitate to contact us.

To deliver your favorite products, we have partnered with the UPS & FEDEX . We are ready to entrust them with your orders and are always on your side if something goes wrong.

 We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement.