Fifth wheel king pin plates are simple upgrades that can dramatically reduce wear, eliminate grease mess, and extend hitch life. The right plate provides a durable barrier between the hitch head and the king pin while minimizing friction during long hauls. This guide highlights five top-rated options available on Amazon, explaining how each plate helps with maintenance, installation, and reliability on American roads.
Overview Of Selected Products
Below is a quick reference to the five reviewed fifth wheel plates, including key attributes and what to expect from each option.
- AOIT 5th Wheel Lube Plate, 10-Inch Diameter — White, 1 Pack
- Buyers Products KP20050 Forged Trailer King Pin, 2-Inch — Black
- REESE Towpower 83002 Fifth Wheel Lube Plate, 10 Inch — White
- CURT 16721 5th Wheel Hitch Lube Plate, 10-Inch Diameter
- AOIT 5th Wheel Lube Plate, 12-Inch Diameter — 2-4/5 Inch ID
Summary table of chosen products
| Product | Brand | Diameter | Approximate Coverage | Key Benefit |
|---|---|---|---|---|
| AOIT 5th Wheel Lube Plate (10″) | AOIT | 10 inches | Standard 5th wheel hitch footprint | Low-mess lubrication, easy installation |
| Buyers KP20050 Forged King Pin | Buyers Products | 2 inches (pin) | Heavy-duty bolster plate | Strength and reliability for demanding tandem trailers |
| REESE Towpower 83002 Lube Plate | Reese | 10 inches | Standard plate size with thick 3/16″ | Max protection with no grease mess |
| CURT 16721 Lube Plate | CURT | 10 inches | Universal fit | Wear protection with clean profile |
| AOIT 12-Inch Lube Plate | AOIT | 12 inches | Wider coverage | Enhanced longevity and friction reduction |
All five products aim to reduce maintenance mess and protect hitch components. The choice depends on hitch type, plate diameter preference, and desired coverage area. The following product-by-product sections provide more detail to help you decide which plate best fits your setup.
AOIT 5th Wheel Lube Plate 10-Inch
The AOIT 5th Wheel Lube Plate is a 10-inch diameter disc designed to fit a wide range of fifth wheel systems, including popular brands and kingpins over 27 feet. The plate helps reduce wear and squeaking by creating a lubricated interface between the king pin and hitch. It replaces messy grease with a clean, maintenance-friendly solution and requires no drilling or tools for installation. This product is well-suited for RVs, campers, and trucks that prioritize a low-mess lubrication approach without sacrificing protection.
Buyers Products KP20050 Forged King Pin
The KP20050 is a forged 2-inch king pin bolster plate designed for strength and durability. It is built to withstand the stresses of heavy-duty towing and is compatible with a range of 5th wheel assemblies. The plate helps maintain hitch integrity by spreading loads and providing a robust wear barrier. Its hardness is specified for long-lasting performance under demanding conditions, making it a solid choice for frequent travelers and commercial setups alike.
REESE Towpower 83002 Fifth Wheel Lube Plate
Reese offers a 10-inch round lube plate with a 3/16-inch thickness, delivering a durable barrier between the fifth wheel head and king pin. The plate’s nylon and white polyethylene finish provides a clean, low-friction surface that minimizes both wear and grease mess. Its larger surface area helps distribute weight more evenly, offering improved protection for the hitch head during long trips and heavy hauling.
CURT 16721 Lube Plate
CURT’s 16721 plate is a 10-inch diameter lubrication plate designed to be compatible with standard 5th wheel kingpins. It emphasizes wear resistance and a clean, low-mess lubrication approach, reducing the need for greasy applications. The product’s inside tabs offer a secure yet flexible fit, ensuring reliable performance across a range of hitch configurations and trailer sizes while maintaining a simple installation process.
AOIT 12-Inch Lube Plate
The AOIT 12-inch plate offers broader coverage for larger fifth wheel hitches. With a 0.2-inch thickness, this plate is designed to endure prolonged use and provide a cushion-like interface between the king pin and hitch head. It’s suitable for a wide range of 5th wheel trailers, and its larger diameter aids in distributing forces more evenly, which can reduce localized wear on the hitch components over time.
Buying Guide: Key Purchase Considerations
Choosing the right fifth wheel lube plate involves balancing diameter, thickness, and compatibility with your hitch system. Consider these factors to select the best option for your setup.
- Diameter and coverage: Larger plates (10–12 inches) provide more protection but may not fit smaller hitch heads. Match the plate to your hitch head diameter and king pin box.
- Material and finish: High-density nylon and polyethylene surfaces reduce friction and resist wear. A smooth, mess-free surface is easier to clean and maintain.
- Thickness: Thicker plates can offer more cushioning but may require precise fit. Check the compatibility with your king pin and hitch head.
- Installation and maintenance: Look for plates that install without tools and reduce grease mess. A plug-and-play design saves time on maintenance.
- Compatibility: Ensure the plate is designed for standard 5th wheel kingpins and your specific hitch model. Some plates are designed for particular brands or bolt patterns.
- Durability for travel conditions: If you tow in varied climates or frequently haul heavy loads, prioritize plates with higher abrasion resistance and robust mounting features.
- Maintenance profile: A lube plate that minimizes grease use reduces cleanup after trips and lowers the risk of residue buildup on trailers and hitches.
In summary, the best fifth wheel king pin plate depends on your hitch diameter, typical trailer size, and how you value cleanliness versus maximum coverage. For standard setups, a 10-inch plate with a durable finish offers a reliable balance. For larger or heavier-tow applications, a 12-inch plate can deliver extra protection at the cost of slightly more fitment consideration.