Threlaco 5th Wheel Lube Plates 12" White — 2-Pack Polyethylene 3/16" Thick, 2-7/8" ID for Kingpin Protection

Threlaco 5th wheel lube plates are durable 12-inch polyethylene discs that press onto the kingpin to reduce friction and protect your hitch without grease.

These two white lube plates are made to sit between your fifth wheel kingpin and hitch plate, offering a clean, low-maintenance barrier that prevents metal-on-metal wear. Each plate measures 12 inches across with a 2-7/8" inner opening and 3/16" thickness, so it slides over the kingpin for immediate use. Built from robust polyethylene, the discs resist abrasion and weathering while eliminating the need for messy lubricants during towing.

How do these lube plates protect my fifth wheel during towing?

The Threlaco plates create a sacrificial, low-friction surface that reduces direct contact between the kingpin and hitch plate. By separating metal components, they lower wear and heat buildup and keep your hitch assembly cleaner.

• 12" diameter gives broad coverage across the hitch plate contact area
• 3/16" thickness balances flexibility with durability
• Polyethylene material resists scuffing and water exposure
• Eliminates greasy buildup on your hitch and RV undercarriage

Will installation require tools or modifications to my RV?

No tools or drilling are needed — the plates are designed to slip directly onto the kingpin. A zigzag inner profile helps the disc seat and stay put while towing, so installation and removal are fast and straightforward.

• 2-7/8" internal diameter fits standard kingpin sizes
• Press-on design for easy manual fitting and removal
• Zigzag interior helps secure the plate without adhesives
• Reusable and portable — keep a spare for long trips

How long will these polyethylene plates last compared to greasing?

Polyethylene is chosen for its wear resistance and weather tolerance, making these plates a long-lasting alternative to frequent greasing. While lifespan depends on towing habits and road conditions, they significantly reduce surface abrasion and maintenance intervals.

• Material resists abrasion better than thin plastic options
• Prevents direct metal wear that shortens hitch life
• Offers a cleaner towing setup with no lubricant residue
• Two-pack provides immediate backup or rotation for extended use

Can these lube plates fit all fifth wheel setups?

They are compatible with most standard fifth wheel kingpins thanks to the 2-7/8" inner diameter, but unique or oversized kingpins may require verification. The 12" outer diameter covers typical hitch plate contact areas, making the plates suitable for the majority of campers and trailers.

• Standard 2-7/8" opening accommodates most kingpins
• 12" diameter provides universal contact coverage for common hitches
• 3/16" thickness fits without altering gap or jaw operation
• Keep measurements handy if your setup deviates from standard sizes

Who is this for: The Threlaco 2-pack 12" lube plates are aimed at fifth-wheel owners who want a low-maintenance, non-grease solution to reduce hitch wear. Ideal for frequent travelers, RV technicians, and anyone preferring a cleaner, easier-to-manage towing setup, these discs provide a quick-install protective layer and a spare for longer journeys.