Managing several trailers does not have to mean carrying a separate key for every coupler or receiver lock. Keyed-alike trailer hitch locks let one key work across compatible locks, simplifying storage, towing, and everyday access.
We selected 10 options spanning receiver pins, coupler locks, multi-piece kits, and extended-span designs. The right choice depends on your receiver size, lock type, required clearance, and how many trailers or components you need to secure.
Best 10 Keyed Alike Trailer Hitch Locks Picks for 2026
Best Multi-Trailer Value
Master Lock 379KA-3 Three-Pack
- Three locks use one key
- Fits three common coupler sizes
- Six keys and limited lifetime warranty
Best For: Securing multiple trailer couplers with one key
Best Receiver-Lock Set
- Four locks are keyed alike
- Fits 2-inch and 2-1/2-inch receivers
- Includes anti-rattle O-rings and keyhole caps
Best For: Managing multiple Class III or IV receiver locks
Best Four-Lock Coupler Set
- Four universal coupler locks
- Eight matching keys included
- Fits common 1-7/8-, 2-, and 2-5/16-inch couplers
Best For: Securing four trailers or coupler points with one key
Best Extra-Long Pin
- Two locks share four matching keys
- 3-1/4-inch active span
- O-rings and dust caps help limit rattles and debris
Best For: Compatible Class III and IV receivers needing extra pin length
Visible Universal Protection
RETRUE 4-Piece Key-Alike Coupler Locks
- Four locks share the included keys
- 11-position fit for three coupler sizes
- Bright yellow, weather-resistant construction
Best For: Multiple trailers needing visible, adjustable coupler security
Multi-Lock Receiver Coverage
TowWorks 3-Pack Keyed-Alike Hitch Locks
- Three locks share six matching keys
- Extra-long pins fit 2-inch and 2.5-inch receivers
- O-rings and dust caps help control rattles and debris
Best For: Multiple compatible Class III or IV receiver hitches
Bright Adjustable Security
- Two locks use the same key
- 11-position adjustment fits three coupler sizes
- Yellow finish and protective rubber caps
Best For: Two compatible trailer couplers needing visible security
Best All-in-One Set
RETRUE Keyed Alike Trailer Hitch Lock Set
- Covers coupler, receiver, and tongue locking points
- Three locks share the same keys
- Fits many common coupler sizes
Best For: Trailer owners needing one multi-lock kit
Best for 2-Inch Receivers
METOWARE Keyed Alike Hitch Lock
- 5/8-inch pin fits compatible 2-inch receivers
- Four locks use the same keys
- Includes weather protection and anti-rattle O-rings
Best For: Compatible Class III and IV hitch owners
Best Compact Multi-Pack
Sutekus Keyed Alike Coupler Locks
- Four compact locks share the same keys
- Fits compatible latch-type couplers
- 1/4-inch pin with up to 3/4-inch span
Best For: Multiple compatible couplers and easy storage
Best Multi-Trailer Value – Master Lock 379KA-3 Three-Pack
Master Lock - (3) Keyed Alike Universal Trailer Coupler Locks w/6 Keys, 379KA-3
Check Price On AmazonFor buyers comparing keyed alike trailer hitch locks, this Master Lock three-pack is designed for securing multiple trailer couplers with one key. Each lock fits several common coupler sizes and includes two keys, providing six total keys for the set.
Best For: Owners securing up to three trailers or multiple coupler points who want one-key convenience.
Pros:
- Three locks share the same key, with six keys included.
- Fits 1-7/8-inch, 2-inch, and most 2-5/16-inch couplers.
- Rotating, top-resting design helps resist hammer strikes, while the zinc die-cast body resists rust and corrosion.
- Includes a limited lifetime warranty.
Cons:
- Separate three-packs are not necessarily keyed alike; a six-pack is required for that arrangement.
- At about 2.4 pounds per lock, the set is relatively substantial to carry.
This is a practical choice when several coupler locks are needed at once. Verify your coupler size and order configuration carefully if you need more than three locks on one key.
Best Receiver-Lock Set – METOWARE 5/8-Inch Four-Pack
This METOWARE set is a receiver-style option for shoppers seeking keyed alike trailer hitch locks for Class III and IV hitches. It includes four 5/8-inch locks with 3-1/2-inch pins, anti-rattle O-rings, and tubular keys.
Best For: Truck, trailer, RV, boat, ATV, and UTV owners who need four keyed alike receiver locks.
Pros:
- Four locks are supplied as a keyed alike set.
- Designed for 2-inch and 2-1/2-inch Class III and IV receivers.
- All-metal construction with solid steel and black electrophoretic paint.
- Rubber O-rings reduce rattling, while the rubber cap helps shield the keyhole from dirt, dust, and water.
Cons:
- Different sets are not keyed alike unless arranged with the seller before purchase.
- Compatibility depends on confirming the 5/8-inch diameter and 3-1/2-inch pin length.
With four locks in one matching-key package, this set suits buyers managing several receiver-mounted accessories. Measure your hitch and consider contacting the seller if you need multiple sets on one key.
Best Four-Lock Coupler Set – Master Lock 379KA-4 Four-Pack
Master Lock - (4) Keyed Alike Universal Trailer Coupler/Tongue Locks w/8 Keys, 379KA-4
Check Price On AmazonThe Master Lock 379KA-4 gives trailer owners four keyed alike coupler locks in one package. It is aimed at protecting unattended trailers while simplifying key management across common coupler sizes.
Best For: Fleets, families, and equipment owners who need four universal coupler locks operated by one key.
Pros:
- Four locks share the same key, with eight keys included.
- Fits 1-7/8-inch, 2-inch, and most 2-5/16-inch couplers.
- Top-resting and rotating design helps make blunt-force attacks more difficult.
- Reinforced zinc construction is designed to resist rust and corrosion.
Cons:
- Two separate four-packs are not necessarily keyed alike; the eight-pack is specified for that need.
- The set weighs approximately 2.87 kg overall.
This package is a strong fit when four compatible trailer couplers need matching locks immediately. Check the coupler dimensions and choose the larger pack if you plan to expand while keeping one key.
Best Extra-Long Pin – TowWorks 79632 Two-Pack
For keyed alike trailer hitch locks on larger receiver openings, the TowWorks 79632 uses an extra-long 5/8-inch locking pin with a 3-1/4-inch active span. The two-pack is supplied with four matching tubular keys and is intended for Class III and IV 2-inch or 2-1/2-inch receivers.
Best For: Owners who need two matching receiver locks and extra reach across compatible 2-inch or 2-1/2-inch hitch tubes.
Pros:
- Two locks are keyed alike, with four tubular keys included.
- Extra-long 3-1/4-inch active length accommodates specified 2-inch and 2-1/2-inch receivers.
- Rubber O-rings help reduce rattling and a dust cap helps protect the locking mechanism.
- Push-lock operation and a separate spring clip provide convenient installation and added retention.
Cons:
- It does not fit several listed adjustable hitch systems, including certain CURT, Andersen, and FASTWAY products.
- Fit may require adjusting or removing O-rings, and dimensions should be verified before purchase.
This is a useful two-lock solution when standard pins may not provide enough reach. Confirm your receiver and adjustable-hitch model before ordering, and use the spring clip as instructed.
Visible Universal Protection – RETRUE 4-Piece Key-Alike Coupler Locks
For shoppers comparing keyed alike trailer hitch locks, this RETRUE set combines a highly visible yellow finish with adjustable coverage for common trailer coupler sizes. Its 11 locking positions accommodate 1-7/8-inch, 2-inch, and 2-5/16-inch couplers, while the included keys work across the set.
Best For: Trailer owners who want multiple adjustable coupler locks with a bright, conspicuous finish.
Pros:
- Four-piece set with keyed-alike operation and two included keys.
- Fits three common coupler sizes with 11 adjustment positions.
- Aluminum body and A36 steel construction are described as rustproof and weatherproof.
- Bright yellow finish helps make the lock easy to spot.
Cons:
- The supplied notes do not specify whether additional replacement keys are available.
- The broad universal design still requires confirming compatibility with your coupler.
The RETRUE is a practical choice when visibility, adjustable fit, and multiple keyed-alike locks matter most. Its 120-day warranty for quality issues adds some purchase support.
Multi-Lock Receiver Coverage – TowWorks 3-Pack Keyed-Alike Hitch Locks
Among keyed alike trailer hitch locks, the TowWorks 79633 stands out as a three-lock receiver-pin set designed for Class III and IV hitches. Its extra-long 5/8-inch pins fit 2-inch and 2.5-inch receivers, but dimensions should be checked carefully before ordering.
Best For: Owners who need three matching receiver locks for compatible 2-inch or 2.5-inch hitch setups.
Pros:
- Three locks are keyed alike and include six matching keys.
- Extra-long 3-1/4-inch active length supports 2-inch and 2.5-inch receivers.
- Rubber O-rings help reduce rattling, and a dust cap helps protect the mechanism.
- Spring clip provides an additional safety measure when inserted in the pin hole.
Cons:
- Not compatible with several listed adjustable ball mounts, Andersen Rapid Hitch kits, and related fittings.
- Fit may require adjusting or removing O-rings for different receiver tube sizes.
- The spring clip must be inserted when using the lock.
This TowWorks set offers useful quantity and matching-key convenience, especially for buyers securing several compatible hitch points. Its exclusions make measuring and compatibility verification particularly important.
Bright Adjustable Security – METOWARE 2-Pack Coupler Locks
The METOWARE two-pack is a straightforward option for shoppers seeking keyed alike trailer hitch locks for common trailer couplers. Its ratcheting design offers 11 locking positions across 1-7/8-inch, 2-inch, and 2-5/16-inch couplers, with a yellow finish for added visibility.
Best For: Trailer owners wanting two matching, adjustable coupler locks with weather-protective features.
Pros:
- Two locks use a keyed-alike design for simpler operation.
- Universal fit covers three common coupler sizes with 11 positions.
- All-metal construction and zinc plating are intended for durability and corrosion resistance.
- Rubber caps help shield the locking mechanisms from rain, snow, dirt, and debris.
Cons:
- The supplied notes do not state how many keys are included.
- Compatibility is described for couplers, not as a universal fit for every trailer hitch component.
METOWARE makes a sensible pick when you need two matching coupler locks rather than receiver pins. The adjustable ratchet and protective caps add everyday convenience, while the yellow finish improves visibility.
Best All-in-One Set – RETRUE Keyed Alike Trailer Hitch Lock Set
For shoppers comparing keyed alike trailer hitch locks, the RETRUE set stands out as a versatile kit covering the coupler, receiver, and trailer tongue. Its adjustable coupler lock and two receiver pins support several common trailer setups.
Best For: Trailer owners who want one keyed-alike kit for multiple locking points.
Pros:
- Includes an adjustable coupler lock, two hitch receiver locks, and a tongue lock.
- Three locks use the same keys, with four keyed-alike keys included.
- Fits many 1-7/8-inch, 2-inch, and 2-5/16-inch couplers and uses weather-resistant materials.
Cons:
- Compatibility still depends on matching the supplied pin diameters, spans, and receiver dimensions.
- The set may be more hardware than needed if you only require one receiver lock.
The RETRUE is a practical choice when convenience matters more than a single-purpose design. Verify your coupler and receiver measurements before ordering.
Best for 2-Inch Receivers – METOWARE Keyed Alike Hitch Lock
The METOWARE is a focused option for shoppers seeking keyed alike trailer hitch locks for a 2-inch receiver. Its 5/8-inch pin is designed for Class III and IV hitches, while the included covers and O-rings address common outdoor-use concerns.
Best For: Owners of compatible 2-inch receiver hitches who want a keyed-alike four-piece lock setup.
Pros:
- Uses a 5/8-inch pin with 2-3/4 inches of effective length for 2-inch receiver tubes.
- Four locks share keys, and two copper keys are included.
- Weather cover helps shield the keyhole, while four rubber O-rings help reduce rattling.
Cons:
- Not compatible with double-walled receiver tubes according to the supplied specifications.
- Designed for 2-inch receivers rather than a broad range of receiver sizes.
Choose the METOWARE when your receiver matches its dimensions and you value quieter towing. Confirm that your hitch is not double-walled before purchase.
Best Compact Multi-Pack – Sutekus Keyed Alike Coupler Locks
The Sutekus four-pack is a compact choice among keyed alike trailer hitch locks, especially for latch-type couplers. Each lock uses a 1/4-inch pin with up to a 3/4-inch effective span, so checking the coupler measurement is essential.
Best For: Owners who need several compact locks for compatible latch-type trailer couplers.
Pros:
- Four locks can be opened with the same four included keys.
- 1/4-inch pins fit various latch-type couplers with a maximum 3/4-inch span.
- Compact design is easy to store and carry, with a painted exterior for corrosion resistance.
Cons:
- It is intended for latch-type couplers and does not provide receiver-lock hardware.
- The maximum 3/4-inch span may not fit every coupler.
Sutekus makes sense for managing multiple compatible couplers without carrying separate keys. Measure the latch opening and pin length before ordering.
How We Picked the Best Keyed Alike Trailer Hitch Locks
We compared the selected locks by design, stated dimensions, intended trailer or receiver applications, included key counts, and kit size. The lineup includes universal coupler locks, 5/8-inch receiver pins, 2-inch and 2.5-inch receiver-compatible models, and combination kits for buyers securing more than one connection point.
Because fit varies by vehicle and trailer, product descriptions should be treated as starting points rather than a substitute for measuring your equipment. Confirm the receiver class, pin diameter, usable span, coupler shape, and clearance before ordering.
Quick Comparison
- Best for multiple matching locks: Master Lock 379KA-3 and 379KA-4 kits provide three or four keyed-alike coupler locks with six or eight keys.
- Best for extended receiver clearance: TowWorks 79632 and 79633 feature a stated 3-1/4-inch span for applications needing extra reach.
- Best for multi-piece security kits: RETRUE and METOWARE sets combine keyed-alike components for broader trailer coverage.
- Best for a basic coupler lock: Sutekus offers a compact heavy-duty steel tongue-lock format with a 1/4-inch diameter and 3/4-inch span.
Key Buying Factors for Keyed Alike Trailer Hitch Locks
Lock Type and Application
A receiver locking pin secures a ball mount or accessory inside the hitch receiver, while a coupler or tongue lock helps prevent unauthorized trailer connection. If you need both functions, a multi-piece kit may be more convenient than mixing unrelated locks.
Diameter, Span, and Clearance
Check the lock pin diameter against the hole in your receiver or coupler. A 5/8-inch pin is common for larger receiver applications, but not every hitch uses the same size. Usable span matters too: a longer shackle or pin can help clear thick receiver walls, safety-chain loops, or coupler hardware, while excess length may add unnecessary exposure.
Key Matching and Quantity
“Keyed alike” means the included locks are designed to operate with the same key; it does not necessarily mean they match other locks you already own. Count the locks and keys in the package, and consider buying extra copies if several drivers need access.
Construction and Exposure
Trailer locks face road spray, dirt, salt, and weather. Look for sturdy steel construction, a protective locking mechanism, and a design that is easy to lubricate and operate. No hitch lock replaces good parking practices, wheel chocks, or a properly secured trailer.
Who Should Buy Which Keyed Alike Trailer Hitch Locks?
Choose a Master Lock multi-pack if you manage several trailers or want identical coupler locks available as replacements. Pick a TowWorks extended-span set when receiver clearance is your main concern. RETRUE or METOWARE kits make sense when you want multiple matching components in one purchase. For a straightforward single-trailer tongue-lock application, the Sutekus model may be the simpler fit.