Lock for Demco Hydraulic Brake Actuator
Updated 08/07/2025 | Published 07/10/2025 >
Products Featured in This Question
Question:
Hi - Im looking for a trailer coupler latch lock. I have a Demco DA70 surge brake actuator for 2 ball installed. I saw you offer item IR66FR InfiniteRule lock. Is this the correct lock for my coupler? I saw in the notes for the lock that it is for cast, not stamped couplers. The DA70 is stamped. Otherwise, I liked the lock. I could not see another InfiniteRule lock that might work. What do you recommend? Previous customer here. Thank you!
asked by: Frank W
Expert Reply:
Hi Frank; I'm sorry to say the # IR66FR is not compatible with your Demco Hydraulic Brake Actuator # DM72VR since it is stamped and not cast. For whatever reason they don't have a different version for that Demco coupler style. You will have to stick with a standard pin lock like # e98888 or get a surround lock like the BulletProof Hitches Extreme Duty Coupler Lock # BPH96VR. I like the surround style since it takes more work for your average thief to defeat it.
What kind of trailer do you have? Thanks for being a loyal customer!
Product Page this Question was Asked From
InfiniteRule Lock for Cast Demco eZ-Latch Trailer Couplers - 2" and 2-5/16"
- Trailer Tongue Lock
- Latch Lock
- Universal Application Lock
- Keyed Unique
- Stainless Steel
- Fits 2 Inch Ball
- Fits 2-5/16 Inch Ball
- 2-15/16 Inch Span
- InfiniteRule
more information >
Continue Researching
- Shop: etrailer Surge Brake Coupler Lock - 3-3/8" Span - 1/4" Diameter - Chrome
- Search Results: trailer tongue lock
- Search Results: e98881
- Shop: Orion Traveler First Aid Kit - 108 Pieces
- Shop: etrailer Trailer Coupler Latch Lock - 2" Span - 1/4" Diameter - Chrome
- Shop: etrailer Trailer Coupler Latch Lock - 1/2" Span - 1/4" Diameter - Stainless Steel
- Shop: etrailer Trailer Hitch Receiver Lock for 2" Hitch - Flush - 2-5/8" Span - Stainless Steel
- Shop: Trimax Trailer Coupler Latch Lock - 1/4" Pin Diameter - 2-1/2" Span
- Shop: etrailer Trailer Coupler Latch Lock - 2-3/4" Span - 1/4" Diameter - Chrome
- Search Results: ramps
- Video: The Low-Down on the InfiniteRule Trailer Coupler Lock
- Video: Comprehensive Review: etrailer Surge Brake Coupler Lock
- Search Results: boat trailer parts
- Search Results: trailer brakes
- Search Results: gooseneck trailer locks
- Search Results: no lockout straight tongue trailer coupler
- Video: All About the Replacement Solenoid Cover for Demco Hydraulic Brake Actuator
- Q&A: Are 1/2-20 Lug Nuts Able To Be Used On M12-1.5" Wheel Studs?
- Q&A: Recommendation for a Fender to Fit a Tire Size of ST225/75-R15
- Q&A: Will ST205/75R15 Trailer Tires Fit 15x7 Inch Aluminum Wheels
- Q&A: Recommended Lock for MORryde GooseTech 5th Wheel to Gooseneck Pin Box
- Q&A: Does MORryde GooseTech Have Vertical Movement
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: Which Coupler Lock Fits New MORryde Gooseneck On Montana RV?
- Q&A: Which Pin on Demco EZ Latch Coupler is for Lock
- Article: Thank you!
- Article: The Best Trailer Tongue Locks for Preventing Trailer Theft
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)



Robin H.
8/7/2025
Hi Frank, did you decide to go with the standard pin lock or the surround lock for your Demco coupler? I'm curious to know how it worked out for you, as it could really help others in a similar situation. Let me know if you need more assistance!