Description


Universal Heavy-Duty RV Trailer Coupler Lock
Premium die-cast aluminum lock body. Available in Red, Black, and Yellow. Universal fit for RV & cargo trailers.
Die-Cast Aluminum Body
Universal Fit
Superior Corrosion Resistance
Multi-Color Options
QUICK FACTS
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Product: Universal Heavy-Duty RV Trailer Coupler Lock
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Structure: Premium Die-Cast Aluminum Body + Zinc Alloy Components
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Compatibility: Universal Fit for 1-7/8″, 2″, and 2-5/16″ Couplers
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Application: Ideal for RV, Utility, Cargo, and Marine Trailers
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Lock Type: High-Security Keyed Cylinder Lock
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Surface Finish: Weather-Resistant Industrial Powder Coating
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Color Options: Available in Red, Black, and Yellow
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B2B Logistics: Supports Retail Carton / Pallet / Custom Packaging
ABOUT THIS RV Trailer Coupler Lock
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Premium Material: Heavy-duty die-cast aluminum shield with a solid zinc alloy coupler ball for ultimate anti-theft protection.
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Universal Fit: One lock fits all standard 1-7/8″, 2″, and 2-5/16″ trailer hitch couplers.
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Slide-to-Lock: Features a heavy-duty sliding mechanism that caps the coupler latch securely, eliminating any play.
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4-Step Operation: Insert the ball, slide the aluminum shield, align the core, and turn the key to lock instantly.
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Direct Factory Supply: Stable lead times and full OEM/ODM branding support for global hardware distributors.
SPECIFICATIONS
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Model: Heavy-Duty RV Trailer Coupler Lock
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Body Material: High-Grade Die-Cast Aluminum Alloy
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Ball & Component: Premium Zinc Alloy (Zamak Grade)
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Net Weight: 560g (Heavy-Duty Industrial Build)
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Coupler Sizes: 1-7/8″ (48mm), 2″ (50mm), 2-5/16″ (59mm)
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Lock Mechanism: Slide & Lock Core System
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Keys Included: 2 Ergonomic High-Security Keys
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Weather Resistance: Salt-Spray Tested Coating for Extreme Outdoor Use
PRODUCT DETAILS

Durable Aluminum Housing
Premium die-cast aluminum lock body for maximum strength and rust resistance.

Universal Secure Fit
Highly adjustable profile ensures a universal secure fit for 1-7/8″, 2″, and 2-5/16″ hitch couplers.

Fast Installation & Removal
Simplekeyed-cylinder design. Secure the lock in seconds with smooth keyed operation.
APPLICATIONS

RV Trailers
Suitable for travel trailers and camper trailers.

Boat Trailers
Can be used on compatible boat trailer couplers.

Utility Trailers
Ideal for utility and equipment trailers.

Cargo Trailers
Helps secure enclosed cargo trailers.
TRAILER COUPLER LOCK vs HITCH LOCK
| Feature | Coupler Lock | Hitch Lock |
|---|---|---|
| Prevents Coupling | ✔ Yes | ❌ No |
| Prevents Trailer Towing | ✔ Yes | ❌ No |
| Best For | Parked Trailers | Towing Vehicles |
| Installation Location | Inside Coupler Socket | Trailer Hitch Receiver |
HOW TO CHOOSE THE RIGHT TRAILER LOCK
Identify Your Trailer
Determine your specific trailer type (RV, boat, utility, or heavy cargo fleet)
Measure Coupler Size
Check your coupler socket size carefully (standard 1-7/8″, 2″, or heavy-duty 2-5/16″)
Choose Security Level
Select a high-security defense level with extreme weather and corrosion resistance.
Verify Compatibility
Ensure the lock shape fits perfectly over the coupler latch to eliminate play and prevent theft.
Frequently Asked Questions
Will this lock fit all standard trailer couplers?
Yes, the highly adjustable sliding shield profile provides a universal secure fit for all standard 1-7/8″, 2″, and 2-5/16″ trailer couplers. Please check our external dimension chart to ensure it fits your specific coupler shape before ordering.
Is RV Trailer Coupler Lock weather resistant?
Yes, the premium die-cast aluminum shield and powder-coated finish offer heavy-duty resistance against rust, corrosion, and extreme outdoor weather conditions.
Are replacement keys available?
Each lock comes with 2 heavy-duty keys. Since each lock cylinder is uniquely keyed for maximum security, we highly recommend keeping the spare key in a safe place.
Do you provide OEM customization?
Absolutely. As a professional hardware manufacturer, we offer full OEM/ODM services, including custom logo engraving, custom packaging, and specific color coatings to fit your brand.
What is the MOQ?
or our standard stock items, the MOQ is flexible. For custom OEM orders, logo engraving, or custom packaging, the MOQ typically starts from 500 to 1,000 pieces depending on your specific requirements. Please contact our sales team for a detailed quote.
Yes, the highly adjustable sliding shield profile provides a universal secure fit for all standard 1-7/8″, 2″, and 2-5/16″ trailer couplers. Please check our external dimension chart to ensure it fits your specific coupler shape before ordering.
OEM & ODM SERVICES
✅ Custom Logo (Laser / Silk-screen)
✅ Custom Logo (Laser / Silk-screen)
✅ Custom Colors Available
✅ Mold Development Support
✅ Private Label for Distributors
MANUFACTURING PROCESS

WHY CHOOSE RUIYU
✅ ISO9001 Certified Factory
✅ 20+ Years Die Casting Experience
✅ OEM & ODM Support
✅ Fast Production Lead Time
✅ Competitive Factory Pricing
Need a Quote for Trailer Coupler Locks?
✅ OEM & ODM Available
✅ Factory Direct Pricing
✅ Fast Delivery
✅ Global Shipping



