Will Master Lock Trailer Coupler Lock Fit Demco eZ-Latch Coupler
Updated 12/01/2025 | Published 11/04/2025 >
Products Featured in This Question
Question:
Does this lock work with a Demco 2 5/16 hitch
asked by: Robert B
Expert Reply:
Hi Robert; the pin lock that comes with the # ML44VR will work but I've seen some issues with fitment for the surround lock on your coupler style because of the shape and design. Some people have had success with it on that Demco eZ-latch but I'm not overly confident.
Are you wanting to upgrade from your current lock? You could still get the Master Lock Hitch Receiver and Coupler Latch Lock Set # 2848DAT which excludes the surround lock so those are keyed alike and then get a different surround style. For serious protection I recommend the BulletProof Hitches Extreme Duty Coupler Lock # BPH96VR. This lock is pretty tough to defeat and we have tested it on that same coupler so we know it fits for sure.
Product Page this Question was Asked From
Master Lock Set - Coupler Ball Lock, Locking Hitch Pin, and Coupler Latch Lock
- Trailer Tongue Lock
- Latch Lock
- Surround Lock
- Universal Application Lock
- Keyed Alike
- Steel
- Fits 1-7/8 Inch Ball
- Fits 2 Inch Ball
- Fits 2-5/16 Inch Ball
- Master Lock
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: rv tire covers
- Search Results: trailer hitch lock
- Search Results: trailer tongue tool box
- Search Results: spare tire covers
- Search Results: accessories and parts
- Shop: InfiniteRule Trailer Coupler Lock Kit - 2" Demco eZ-Latch Couplers w/ Hitch Lock & Coupler Lock
- Shop: Master Lock Set - Coupler Ball Lock, Locking Hitch Pin, and Coupler Latch Lock
- Search Results: demco trailer hitch lock
- Q&A: Recommended Cover for 27-Inch Trailer Tire in Size ST205/75-15
- Video: Review of Master Lock Trailer Tongue Lock - Lock Set - ML44VR
- Shop: Adco Spare Tire Cover for 21-1/2" Diameter Tires - Diamond Plate - Qty 1
- Shop: Master Lock Hitch Receiver and Coupler Latch Lock Set - Padlock - 1-1/4" and 2" Hitches
- Shop: Classic Accessories RV Tire Cover for 27" Tires - Double Axle - Gray - Qty 1
- Shop: BulletProof Hitches Extreme Duty Coupler Lock - 1-7/8", 2", and 2-5/16" Couplers
- Shop: EcoHitch Hidden Front Mount Trailer Hitch Receiver - Custom Fit - 2"
- Video: What to Know About the Curt Wall Mount for 2" Hitch Accessories
- Video: Review of SnapPad RV Jack Pads - Stabilizer Jack Pads - SN44VR
- Q&A: Availability of Lock Set for Trailer Coupler and 2-1/2 inch Hitch
- Article: The 5 Best Trailer Drop Hitches You Can Buy
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Article: Electric Trailer Brakes: How They Work & What to Buy
- Article: The Best Trailer Tongue Locks for Preventing Trailer Theft
- Q&A: Can you Back Up With the Weigh Safe Weight Distribution Hitch Before Making the Adjustments?
- Q&A: Transition Plates For Trailer Ramp Door That Is 80-1/2" Wide
- Q&A: Recommended Keyed Alike Coupler and Hitch Lock
- Q&A: Do You Have a Locking Hitch Pin for a Lock N Roll Articulating Hitch?
- Q&A: How Does Redarc Tow-Pro Link SwayStop Work?
- Article: How to Measure for Trailer Hitch Drop
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)





Robin H.
12/1/2025
Hey Robert, how did things turn out with the coupler lock for your Demco hitch? Did the BulletProof lock end up being the better fit? Your update could make it easier for the next person with that same coupler style.