Boat Trailer Locks

There are a many different types of trailer locks to secure your boat trailer overnight whether attached to your tow vehicle of left unattended.  Have you ever wanted take your tow vehicle, separate your boat trailer, and go out to dinner, run to the fishing store or go pick up auto supply store for a part and wish you could secure your boat and trailer while you are away.   Review this page to decide if you need one or more of these types of locks:

  • Trailer Coupler Locks
  • Trailer Coupler Lever Locks
  • Receiver Locks
  • Trailer Wheel Locks
  • Trailer Spare Tire Locks

Trailer Coupler Locks

When choosing the additional security of boat trailer locks there are five specific situations to consider.  The first situation is when your have to leave your boat and trailer unattended - for example for maintenance work, or just to drive your tow vehicle with out your boat and trailer attached.  The best lock for this is a trailer coupler lock which places a locking ball into the coupler.  No lock is completely tamper proof but these will slow down any one wanting to do mischief with your boat and trailer.  As you can see this lock has a ball that fits into the coupler and heavy duty steel U shaped bolt that holds this in place over the coupler.  Many boat service businesses will use this type of coupler lock for added security while on their property.  This TRIMAX UMAX100 lock is one of the best, and you can read more about this great lock on this Amazon link.    This is the coupler lock each of us here at PFT trust and use.

Trimax UMAX100 Premium Universal 'Solid Hardened Steel' Trailer Lock (fits all couplers)

As an Amazon Associate, we earn from qualifying purchases.   Items we reference and recommend have been personally owned, used and tested or we have fished with anglers who were using them.

Trailer Coupler Lever Locks

This trailer coupler lock is useful whether your boat is unattended or connected to your tow vehicle.  Every coupler has a lever that closes over the ball of the trailer hitch designed to prevent your hitch ball from coming out of the coupler.  When you close the lever you insert the pin to manually prevent this from opening, the pin shown in above picture.  The coupler lock replaces this pin going in one side and passing out the other. You then insert the locking end on opposite side, tightening and removing the key.  Some manufacturers will package this coupler lock  with a receiver lock, and making these locks to work off the same key - which is really convenient.

Reese Towpower 7075130 Class I-IV Dual Bent Pin Receiver Lock and Coupler Lock Combo

Receiver Locks

Trailer Hitch Receivers are usually held in place on the tow vehicle with a hitch pin and spring hairpin.  You might consider replacing the standard hitch pin trailer hitch receiver lock preventing the hitch receiver from being removed from your tow vehicle with without a key.  This can be useful when the boat trailer is connected to your tow vehicle or simply to prevent someone from taking your trailer hitch receiver.  Again, buying a trailer hitch lock that is keyed to work with a trailer coupler lever lock is very convenient because you only have to carry one key to work both locks.

Master Lock 2866DAT Fits 1/2 in. and 5/8 in. Receivers Trailer Hitch Lock

Other Boat Trailer Locks

Boat Trailer Wheel Locks

Deciding if you need to buy one or more of these trailer wheel locks depends on how secure you feel you need to be with your two vehicle, boat and trailer.  Do you keep your boat and trailer in storage unit or your garage?  Do you store your boat in your driveway with open access to the street of is it behind a locked fence?  Adding trailer wheel locks is one more step in securing your rig.  There are several styles of these trailer locks that you can choose from. 

Trimax TCL65 Wheel Chock Lock

Spare Tire Locks

When you are thinking about boat trailer locks don't overlook your spare tire by adding a spare tire lock so that you can receive additional peace of mind.  There are at least two types of spare tire locks, one using a steel cable that locks around the trailer frame and another type that replaces a lug nut with a lockable lug nut.  Many new cars use a locking wheel lug nut to prevent wheels from being stolen. 

Trimax ST30 Trimaflex Spare Tire Cable Lock (Round Key) 36" x 12mm
Master Lock Tire Lock, Lug Nut Style Spare Tire Lock, 262DAT

Other Boat Trailer Parts