Your Reliable Whiting Door Parts Supplier
KOP DOOR provides full supporting solutions with a complete line of professional trailer truck door hardware. Our product series covers hinges, cables, fixtures, rollers, handles, straps, and bearing plates, they are designed for both dry van and refrigerated trailer applications. All parts are manufactured from high-strength raw materials with precise tolerances, this ensures smooth operation, minimizes downtime, and extends the service life of whiting doors.
These whiting door parts can be supplied in mixed bulk orders with customized packaging to help you as trailer door distributors and wholesalers enhance project efficiency and boost customer satisfaction. We support long-term cooperation with global distributors and wholesalers seeking stable quality and competitive supply.
Whiting Door Parts

- Model:KM23
- Heavy-duty steel construction for high load-bearing capacity
- Powder coated surfacefor corrosion resistance
- Precision-aligned mounting holes for quick installation

- Model:KM43
- Reinforced center hinge designed for balanced door support
- High-strength steel for superior durability under repeated opening cycles
- Powder coated surface for corrosion resistance

- Model:KM25
- High-tensile galvanized steel cable
- Available in multiple diameters(1/8”, 1/4”, 7/16” eye) and lengths(110” & 115″) to match different trailer door systems
- Superior resistance to abrasion, stretching and corrosion.

- Model:KM42
- Robust top mounting fixture for secure cable and spring attachment
- Manufactured via precision machining to ensure precise alignment and evenly distributed loads
- Powder coated surfacefor corrosion resistance

- Model:KM54
- Strong bottom fixture for stable door guidance and sealing
- Durable construction to withstand impact and vibration
- Powder coated surfacefor corrosion resistance

- Model:KM26
- 1” steel roller , galvanizedsurface
- 2-3/4” stem and 7/16 diameter
- Low-friction design reduces effort and extends track life
Complete Hardware Solution for Faster Installation & Simple Maintenance
The full range of whiting door parts including side hinges, center hinges, cables, top and bottom fixtures, rollers, handles, straps, and bearing plates works together to support fast, standardized installation and reliable long-term performance. As a trailer door distributor or wholesaler, you can therefore reduce parts shortages & ensure seamless project execution.


Built for Heavy-Duty Performance and Harsh Environments
All whiting door parts are manufactured from high-strength materials with anti-corrosion treatments, guarantees reliable operation under vibration, impact, temperature changes, and outdoor exposure for your door system.
Practical Products That Support Long-Term Door System Reliability
From load-bearing hinges and cables to smooth rollers and reinforced bearing plates, this complete whiting door parts set helps reduce maintenance frequency, cut downtime and deliver a longer service life of truck door systems — an ideal choice for distributors and wholesalers focused on quality and efficiency.


Flexible Supply & Customization for Trailer Door Distributors and Wholesalers
As an experienced supplier, KOP DOOR supports mixed bulk orders, customized packaging, and logo marking to meet the specific needs distributors and project-based wholesalers, helping build long-term stable cooperation.
Whiting door parts are specifically engineered for commercial vehicle applications in outdoor environments, unlike garage door hardware are used for residential and industrial garage doors.
Yes. The product range is designed for general trailer door systems and fit most dry van and refrigerated trailer applications.
Yes. Both the side/center hinges and rollers are made from high-strength materials with durable surface treatments, guarantees dependable performance over thousands of daily open-close operating cycles.
Yes. We support mixed bulk orders of different trailer door parts, along with customized packaging options, which help distributors achieve optimized inventory control and meet varied customer demands.
Partial hardware (hinges, pull straps, seals) has universal compatibility, but core functional parts (cable drums, special rollers, spring brackets) are model-specific. Todco adopts exclusive T-style drum structure, which is different from Whiting W-style drums. It is recommended to check the door model and part number before replacement them.


