If you are servicing a fifth wheel locking lever, the two adjustment tools below are the most relevant options for checking lock engagement and free play. They are not replacement levers. For parked-trailer theft deterrence, the three kingpin locks offer a different kind of protection. Choose an adjustment tool for coupling maintenance and a kingpin lock for securing an uncoupled trailer.
| Product | Best For | Type |
|---|---|---|
| Fifth Wheel Lock Adjustment Tool | Checking lock engagement and free play | Service tool |
| Holland TF-TLN-5001 | Holland fifth wheels with 2-inch kingpins | Service tool |
| METOWARE King Pin Lock | Visible deterrence and quick installation | Security lock |
| Equipment Lock Heavy Duty | Covering a 2-inch kingpin | Security lock |
| Jayour Heavy-Duty King Pin Lock | Steel construction and a carrying handle | Security lock |
Fifth Wheel Lock Adjustment Tool
Best for: Technicians who need to inspect fifth wheel lock engagement and check free play between the lock jaws and kingpin. This tool is selected because its stated purpose directly relates to servicing the locking mechanism rather than securing a parked trailer.
The listed procedure is to clean and inspect the fifth wheel, release the handle, place the tool on the fifth wheel, and cycle the lock to check and adjust it. The product description says to consult the fifth wheel manufacturer’s manual for detailed instructions. Use the manufacturer’s specifications to determine acceptable free play.
Limitation: The listing does not identify specific fifth wheel makes or models it fits. Confirm suitability and follow the relevant service manual before using it.
Holland TF-TLN-5001 Adjustment Tool
Best for: Users servicing a Holland fifth wheel that uses a 2-inch kingpin. Its stated fit is more specific than the general adjustment tool above, making it a clearer choice when that application matches the equipment.
The product is identified as a fifth wheel lock adjustment tool. Its package dimensions are listed as 39.5 by 12.5 by 12.2 inches, and its package weight is listed as 22.4 pounds. These details may help buyers plan storage and handling.
Limitation: The stated application is limited to Holland fifth wheels featuring 2-inch kingpins. Verify the fifth wheel and kingpin requirements before purchase; the listing does not describe it as a replacement locking lever.
METOWARE Fifth Wheel King Pin Lock
Best for: RV and trailer owners seeking a visible reminder and a portable kingpin security device. This is not an adjustment tool: it is designed to lock onto a kingpin when the trailer is parked and uncoupled.
The listed features include high-strength iron, a double electrophoretic paint coating intended to resist corrosion and rust, a 12-inch chain, and a bright red warning tag. The tag is meant to remind the user to remove the lock before hitching. Two keys are included, and the product description says installation and removal take seconds.
Limitation: A kingpin lock does not inspect or adjust the fifth wheel locking mechanism. Remove it before attempting to couple the trailer.
Equipment Lock Heavy-Duty Kingpin Lock
Best for: Owners who want a kingpin lock with a high-security barrel lock system and stated coverage for a 2-inch kingpin. The listing describes powder-coated steel and a design that slides onto the kingpin, then secures with a key.
Choose this if you want a lock that requires no mounting and is described as fully covering the trailer’s 2-inch kingpin. Its role is to prevent hitching to the parked trailer, not to adjust the fifth wheel lever or jaws.
Limitation: The stated fit is for a 2-inch kingpin. Confirm your trailer’s kingpin dimensions before ordering.
Jayour Heavy-Duty King Pin Lock
Best for: Buyers who value a carrying handle and a bright caution tag on a steel kingpin lock. The listing describes durable steel construction, a handle for carrying, and a yellow hang tag intended to deter theft and remind users about the lock.
This product is a security accessory for a parked trailer, RV, or camper. The attached handle may make carrying the lock easier, while the caution tag provides a visible reminder to remove it before hitching.
Limitation: The provided features do not specify kingpin dimensions or adjustment-tool functions. Check fit for your trailer and do not treat this as a fifth wheel locking lever service tool.
Buying Guide: How To Choose A Fifth Wheel Locking Lever Tool
Do you need to adjust the locking mechanism or secure a parked trailer?
For checking lock engagement or free play, choose an adjustment tool and follow the fifth wheel manufacturer’s maintenance instructions. A kingpin lock serves a separate purpose: it helps prevent a parked, uncoupled trailer from being hitched. These product types are not interchangeable.
Does the tool match your fifth wheel and kingpin?
Check the fifth wheel brand, model, and kingpin size before buying. The Holland tool specifically lists Holland fifth wheels with 2-inch kingpins. The general adjustment tool does not provide a specific fit range in its listed features, so verify compatibility with the manufacturer or seller.
What should you compare on a kingpin lock?
Compare the stated fit, locking method, material, and reminders included. The METOWARE and Jayour options list warning tags; METOWARE also lists a chain and two keys. The Equipment Lock listing specifies coverage for a 2-inch kingpin and a barrel lock system. A reminder tag can help reduce the chance of attempting to hitch with the lock in place, but users still need to check before coupling.
When should a locking lever be inspected?
Follow the service schedule and inspection procedure in the fifth wheel manufacturer’s manual. If you are unsure whether the jaws engage correctly or whether free play is within specification, consult a qualified technician rather than guessing at an adjustment.
Frequently Asked Questions
Is a fifth wheel adjustment tool the same as a locking lever?
No. An adjustment tool is used to inspect or adjust the locking mechanism. The listed products do not claim to be replacement locking levers.
Can a kingpin lock adjust the fifth wheel jaws?
No. A kingpin lock secures a parked trailer’s kingpin; it does not adjust the fifth wheel coupling.
Which product is specified for a 2-inch kingpin?
The Holland TF-TLN-5001 is specified for Holland fifth wheels featuring 2-inch kingpins. The Equipment Lock listing also describes coverage of a 2-inch kingpin.
Should I remove a kingpin lock before hitching?
Yes. Remove any kingpin lock before coupling the trailer, and check that the fifth wheel and kingpin are ready to connect.
Where can I find the correct adjustment procedure?
Consult the fifth wheel manufacturer’s manual for the inspection steps and specified free-play tolerance. If needed, ask a qualified truck or trailer technician.