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A fifth-wheel lube plate is a round polymer disc that slips over an RV trailer’s kingpin and sits between the trailer skid plate and hitch head. It is not a universal substitute for the towing or hitch maker’s lubrication and inspection requirements. Diameter and thickness matter: the plate should cover the skid plate without conflicting with the coupling geometry, and some commercial fifth-wheel manufacturers explicitly prohibit aftermarket lube plates. Confirm the trailer pin box, hitch-head maker, required lubrication method, kingpin clearance, and locking operation before purchasing. The main products here are 10- or 12-inch plates; the final two are deliberately labelled grease alternatives, not plates.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | CURT 16721 10-Inch Fifth-Wheel Lube Plate | $16-$25 | Amazon · eBay |
| 2 | CURT C16722 12-Inch Fifth-Wheel Lube Plate | $13-$26 | Amazon · eBay |
| 3 | Camco 44664 10-Inch Fifth-Wheel Lube Plate | $9-$25 | Amazon · eBay |
| 4 | Camco 44675 12-Inch Fifth-Wheel Lube Plate | $25-$30 | Amazon |
| 5 | Eaz-Lift 44674 12-Inch Fifth-Wheel Lube Plate | $20-$30 | Amazon · eBay |
| 6 | Eaz-Lift 44678 Premium Red PTFE Lube Plate | $25-$32 | Amazon · eBay |
| 7 | Reese 83002 10-Inch Lube Plate | $15-$22 | Amazon · eBay |
| 8 | Reese 83001 12-Inch Lube Plate | $12-$20 | Amazon · eBay |
| 9 | Blue Ox BXR9004 10-Inch Fifth-Wheel Lube Plate | $14-$20 | Amazon |
| 10 | WD-40 Specialist White Lithium Grease | $7-$15 | Amazon · eBay |
The picks, in detail
CURT 16721 10-Inch Fifth-Wheel Lube Plate
CURT part 16721 is a 10-inch round plate, 3/16 inch thick, that slips over the trailer kingpin. It is the common smaller-diameter option where the hitch maker calls for a 10-inch plate.
- 10-inch diameter
- 3/16-inch thickness
- part number 16721
- Published dimensions and part number
- Current retailer stock
- Only suitable if the hitch maker permits this thickness and diameter
CURT C16722 12-Inch Fifth-Wheel Lube Plate
CURT C16722 is the 12-inch, 3/16-inch-thick alternative for a hitch or pin box that needs the larger coverage. It is a plate for an RV fifth-wheel kingpin, not a truck-tractor fifth-wheel specification.
- 12-inch diameter
- 3/16-inch thickness
- part number C16722
- Published 12-inch size
- Direct alternative to CURT’s 10-inch plate
- A larger disc is not automatically compatible with every hitch head
Camco 44664 10-Inch Fifth-Wheel Lube Plate
Camco model 44664 is a 10-inch RV fifth-wheel plate made from high-density wear-resistant plastic. The retailer listing says it installs without drilling or tools.
- 10-inch diameter
- high-density plastic
- model 44664
- Clear RV fifth-wheel product identity
- No-drill installation listing
- Check thickness and locking clearance against the hitch manual
Camco 44675 12-Inch Fifth-Wheel Lube Plate
Camco 44675 is a 12-inch, 3/16-inch-thick plate specified for a fifth-wheel kingpin. The current listing describes high-density wear-resistant plastic construction.
- 12-inch diameter
- 3/16-inch thickness
- high-density plastic
- Dimensions published in the listing
- Direct 12-inch companion to Camco’s smaller option
- Do not rely on a generic vehicle-fit label instead of the hitch maker’s instruction
Eaz-Lift 44674 12-Inch Fifth-Wheel Lube Plate
Eaz-Lift 44674 is a conventional 12-inch fifth-wheel lube plate sold for RV towing applications. It is a separate product from the brand’s red PTFE premium plate, so it is useful for a plain-polymer comparison.
- 12-inch plate
- Eaz-Lift model 44674
- RV fifth-wheel application
- Current stocked model
- Plain-plate alternative within the same brand
- Confirm the actual plate thickness before coupling
Eaz-Lift 44678 Premium Red PTFE Lube Plate
Eaz-Lift 44678 is the brand’s 12-inch premium red plate with PTFE listed by RV parts retailers. It is a distinct material-oriented option rather than a duplicate pack size of the standard white plate.
- 12-inch diameter
- PTFE listed
- model 44678
- Material difference is clearly identified
- Current retailer listings
- PTFE labeling does not override hitch manufacturer restrictions
Reese 83002 10-Inch Lube Plate
Reese 83002 is a 10-inch lube plate, also sold under Cequent towing references. Retail listings identify the 10-inch diameter and separate 12-inch sibling 83001, making the size choice easy to verify.
- 10-inch diameter
- part number 83002
- Reese/Cequent reference
- Exact part number
- Available in a larger sibling size
- Check that a 10-inch disc covers your actual skid plate
Reese 83001 12-Inch Lube Plate
Reese 83001 is a 12-inch plate with 3/16-inch thickness listed by industrial and auto-parts retailers. It is identified as compatible with Reese and other fifth-wheel products only where the coupling maker permits an add-on plate.
- 12-inch diameter
- 3/16-inch thickness
- part number 83001
- Published dimensional data
- Common replacement reference
- Some commercial fifth-wheel makers prohibit aftermarket plates
Blue Ox BXR9004 10-Inch Fifth-Wheel Lube Plate
Blue Ox BXR9004 is a 10-inch fifth-wheel lube plate listed by RV-towing retailers. It is a genuine plate option for buyers whose owner documentation calls for this diameter, rather than a liquid or grease product.
- 10-inch plate
- part number BXR9004
- RV towing accessory
- Separate brand and part number
- Current retailer listing
- Published retailer listing does not establish fit for every hitch
WD-40 Specialist White Lithium Grease
Near-miss grease alternative, not a lube plate: a white-lithium aerosol grease for metal-to-metal moving parts. Consider it only if the hitch manufacturer specifies grease rather than an add-on kingpin plate; do not apply it where the manual forbids it.
- aerosol grease
- not a kingpin plate
- metal-to-metal lubricant
- Clearly different maintenance route
- Widely available package sizes
- Does not supply the plate thickness or kingpin geometry of a lube disc
Buying tips
- Read the hitch and trailer manuals first. Plate diameter and thickness must preserve the maker’s specified kingpin clearance and lock operation.
- Before travel, perform the manufacturer’s complete coupling inspection and a pull test; do not assume a plate or grease product proves a hitch is locked.
- Do not fit an aftermarket plate to a commercial fifth wheel whose manufacturer prohibits it. Fontaine, for example, publishes a no-aftermarket-lube-plate position for its fifth wheels.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.