Threlaco 5th Wheel Hitch Lube Plates — 2 Pack 12" Black, Slip‑On Grease‑Free Pads

If you tow an RV or fifth‑wheel trailer, the constant pivoting and weight transfer between the kingpin and hitch plate can cause abrasion and the need for frequent greasing. These Threlaco lube plates are designed as a quick, tool‑free solution: two 12‑inch, 3/16" thick polyethylene pads with a 2‑7/8" center opening slip over the kingpin to reduce friction, contain mess, and extend the usable life of your hitch assembly.

How do these lube plates reduce maintenance and mess?

The low‑friction polyethylene surface provides a clean bearing layer between metal components, eliminating the need for repeated grease applications. Because they slip on easily and stay in place, they prevent greasy buildup on the hitch plate and surrounding areas.

• Polished polyethylene surface minimizes metal‑on‑metal contact.
• Two plates in the pack offer an immediate spare for quick swaps.
• Mess‑free alternative avoids excess lubricant on trailers and trucks.
• Durable material resists cutting, scuffing, and deformation over time.

Will these plates fit my kingpin and hitch plate?

Each Threlaco plate has a 2‑7/8" internal diameter to fit standard fifth‑wheel kingpins and a 12" outer diameter to cover a wide contact patch. The 3/16" thickness balances flexibility with strength, creating a snug, secure fit without altering ride height or clearance.

• Standard 2‑7/8" center hole fits common kingpin sizes.
• 12" diameter provides broad coverage across the hitch plate.
• 3/16" thickness prevents excessive compression under load.
• Zigzag inner profile helps the plate stay seated on the kingpin.

How do you install and swap a Threlaco lube plate?

Installation is straightforward and tool‑free: press the plate down over the kingpin until the zigzag edge seats. Swapping to the spare is fast at roadside; no drilling, fasteners, or adhesives are needed, so you can replace a worn pad in minutes.

• Slip‑on design requires no tools or hardware.
• Zigzag inner edge ensures secure engagement with the kingpin.
• Quick change capability lets you keep towing with minimal downtime.
• Keep one plate installed and one spare for convenience on long trips.

How durable are these plates for long‑term towing use?

The plates are molded from high‑density polyethylene chosen for abrasion resistance and low friction. They are engineered to withstand the shear and compressive forces typical in fifth‑wheel towing and maintain shape under regular use.

• Polyethylene resists wear, impact, and environmental exposure.
• Large surface area spreads load to reduce concentrated wear.
• Intended for repeated use across many towing cycles.
• Included spare extends service life without immediate replacements.

Who is this for: These Threlaco 12" lube plates are aimed at RV owners, commercial haulers, and anyone who regularly tows a fifth‑wheel trailer and wants a cleaner, lower‑maintenance hitch interface. They are particularly handy for drivers who prefer a grease‑free solution, need a quick field‑serviceable spare, or want to prolong the life of their hitch plate with minimal effort.