10 Best Trailers Locks Reviewed as of September 2023

Reviews Scanned

Sale1

Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT

Coupler Lock,Universal

Master Lock 379ATPY Universal Trailer Hitch Lock , Black

Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers
Trailer lock is best used for vehicles, trailers, and RVs
Trailer coupler lock features advanced locking mechanism to resist picking and prying
Trailer hitch lock is constructed from zinc to resist rust and corrosion
Includes one trailer coupler lock, two keys

Sale3

REESE Towpower 72783 Coupler Lock, Adjustable Storage Security, Heavy-Duty Steel, Yellow and Chrome

DIMENSIONS: 9” x 9” x 3”.Material:Steel
BUILT TO LAST: The REESE Towpower Universal Coupler lock is a premium lock constructed with an aluminum body and heavy-duty steel lock bar. Distance between lock shackle holes center to center is 4-1/2 inch
UNIVERSAL FIT: Ratchet design is adjustable with 11 locking positions and fits 1-⅞”, 2”, and 2-5/16” couplers.
DETERS THEFT: Bright, deterrent yellow color is durable, highly visible, and an essential accessory to all types of trailers.
SECURE PROTECTION: Easy-to-install lock resists picking, prying and drill outs. Guards against truck or trailer towaway theft in storage.

Rhino USA Trailer Hitch Coupler Lock Kit (Includes 2" & 1/4" Couplers) Heavy Duty Anti-Theft Tongue Locks for Boat, RV, Travel Trailers & More - Reinforced Solid Steel for Ultimate Peace of Mind!

AMERICAN OWNED, FAMILY OPERATED - Join the Rhino Family & Support a USA based Father/Son Business!
PROTECTED FROM THE ELEMENTS - Powder Coated Protection Layer to Prevent Rust, Corrosion & Weathering
FITS MOST 2 INCH COUPLERS - Maximum Coupler Lip Width 3-3/4" Maximum Coupler Lip Height is 3/8"
CONFIDENCE & PEACE OF MIND - Knowing your Boats, Toy Hauler or Trailer is Protected From Theft.
GUARANTEED 5-STAR EXPERIENCE - If you aren't 100% Satisfied for any Reason well Refund your Money

Sale5

Funmit Trailer Lock Universal Coupler Ball Lock Fits 1-7/8", 2", and 2-5/16" Couplers, Boat Camper Accessories for Travel Trailers Adjustable Heavy-Duty Steel Hitch Lock Yellow

✅FIT: Funmit trailer coupler lock is designed to fit snugly in 1-7/8”, 2”, 2-5/16” couplers and ratchet is adjustable with 11 locking positions. Each ratchet is tightly engaged with the lock body, it will never be pulled open by brute force like other coupler locks!
✅HIGH QUALITY: U-shape trailer lock is made of heavy-duty solid /rigid A36 Steel and aluminum alloy,it's durable, rustproof and weatherproof. Passed QC product quality certification
✅SAFETY: Funmit trailer hitch lock is made of high-quality materials and combines with the last anti-theft technology to ensuresafety,and the U-shape lock can resist picking, prying and drilling
✅CONVENIENT: It is easy and quick for you to install and remove, and bright yellow color can provide high visibility
✅WARRANTY 100%: The replacement trailer locks come with a 365 days manufacturer limited warranty back by Funmit, you can feel a 100% confident buy and enjoy a 24 hours pro tech online help any time

Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA

Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers
Trailer lock is best used for vehicles, trailers, and RVs
Trailer coupler lock features advanced locking mechanism to resist picking and prying
Trailer hitch lock is constructed from zinc to resist rust and corrosion
One trailer coupler lock, two keys

Sale7

Reese Towpower 7088300 Heavy Duty Coupler Lock , Grey

Universal, fits all couplers.Fit Type: Universal Fit
Secures trailer when not being towed
Ratchet design with eleven locking positions. Bright theft deterrent silver
Fits 1-7/8, 2 and 2-5/16 inch trailers
Two theft proof square keys are included

Master Lock 605DAT Shackle 15/16" Length x 7/16" Inner Width, 2" Body Width, Solid Brass Coupler Lock, Gold

Solid brass coupler latch lock with 3/4in (19mm) shackle.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
Precision pin tumbler mechanism for superior pick resistance
Resists rust and corrosion
Lock design protects shackle from cutting and sawing
Case hardened steel shackle

MaxxHaul 50186 Trailer Tongue Coupler Lock Adjustable Trailer Tongue Pin 1/4" Diameter, Fits 1" to 3" Latch-Type Coupler for Trailer, RV, Truck, Towing

Constructed from high-strength steel with chrome finish to resist rust and corrosion and handle all types of weather conditions
Includes diameter 1/4" locking pin, 360º rotating lock head all-weather rubber cap, and 2 flat keys for maximum security to help tighten in place
Adjustable with 4 different active lengths: 1", 1-11/16", 2-3/8", and 3-1/16"
Easy to operate with a user-friendly push-to-lock design without using the key
Suitable use for 1" to 3-1/16" latch-type couplers for towing, boat, truck, and RV

Sale10

Master Lock - (3) Keyed Alike Trailer & Multi Purpose Padlocks, 37KA-3

This listing is for THREE (3) padlocks keyed alike (same key unlocks all) and six keys. The lock is also available with Bump Stop Technology. Search 37NKA in our storefront.
APPLICATION: These padlocks are ideal for all outdoor applications when needing multiple locks that utilize ONLY one key. The #37 latch lock works well on 1-7/8 and 2 inch couplers and on virtually all standard hasp applications. These locks have a removable shackle sleeve. Sleeve off - Secures coupler latches. Sleeve on - Works best with hasps. KEY RETAINING - ensures that padlock is not left unlocked.
PADLOCK FEATURES: 1-9/16"(21mm) wide x 3"(76mm) high. Armored Shackle Guard blocks bolt cutters. Revolving, case-hardened steel shackle sleeve resists cutting and sawing. Removable shackle sleeve. Sleeve off - Secures coupler latches to accommodate openings 9/32" (7mm) in diameter. Sleeve on - Works best with hasps, fits openings 1/2" (13mm) in diameter or larger. Precision pin tumbler mechanism resists picking.
IMPORTANT NOTE: If using this style lock on a trailers coupler latch please be aware it is NOT recommended for all 2-5/16 couplers. It will fit some 2-5/16 couplers, the exception being 2-5/16 couplers that have the latch partially recessed from the top surface of the coupler, or latches that are wider than 7/8.
ATTENTION: If you order two 3-packs they will NOT necessarily be keyed the same. To ensure you get two 3-packs keyed alike, you must order the 6-pack.

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