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Blue Ox Base-Plate-to-Tow-Bar Lock

Blue Ox Base-Plate-to-Tow-Bar Lock

Item # BX8859
Our Price: $27.56
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Accessories and Parts
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Shipping Weight: 0.89 lbs
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BX8859 - Keyed Unique Blue Ox Base Plates
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Secure your Blue Ox tow bar to one of the base plates on your towed vehicle with this 1/2" diameter, deadbolt-style lock. 1-800-940-8924 to order Blue Ox accessories and parts part number BX8859 or order online at Free expert support on all Blue Ox products. Great prices and Fastest Shipping for Blue Ox Base-Plate-to-Tow-Bar Lock. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (15)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Blue Ox Accessories and Parts - BX8859

  • Base Plates
  • Locks
  • Blue Ox
  • Keyed Unique

Secure your Blue Ox tow bar to one of the base plates on your towed vehicle with this 1/2" diameter, deadbolt-style lock.


  • Lock replaces one of the pins that holds tow bar to base plates for secure, tamper-resistant connection
    • Designed for use with Blue Ox tow bars and base plates
    • Helps to prevent accidental unhitching
  • Constructed of forged and machined hardened steel
  • Chrome finish resists rust and corrosion
  • Snap-on cover keeps keyway free of dirt and debris
  • 1 Lock and 2 keys included
  • Made in the USA


  • Diameter: 1/2"
    • Total length: 5-13/16"
    • Inner length: 2-11/16"
  • 1-Year warranty

BX8859 Blue Ox Base Plate Lock - 1/2"

Video of Blue Ox Base-Plate-to-Tow-Bar Lock

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Blue Ox Trailer Hitch Receiver Lock Review

Customer Satisfaction Score:

Customer Reviews

Blue Ox Base-Plate-to-Tow-Bar Lock - BX8859

Average Customer Rating:  4.9 out of 5 stars   (15 Customer Reviews)

Secure your Blue Ox tow bar to one of the base plates on your towed vehicle with this 1/2" diameter, deadbolt-style lock.


I have yet to use them.

Avery - 02/21/2023


The pins are replacements for attaching our car to the Motorhome. The pins were more than I had anticipated. I got a better product at a very good price. You can’t beat that!

Very good, no complaints
Harold - 08/03/2020


My experience with etrailer was seamless. I called in a small order, they confirmed it in their inventory and seemed genuinely happy to answer my need. It shipped promptly and I appreciate it. Mike E. (California)


Product was shipped quickly, arrived in good condition, performs as advertised. etrailer personnel were extremely helpful answering questions when reached by phone. A good online commerce experience.


looks strong i have not used them at the time but have no worry about using them.

This is what I should have done to start with instead of a tow dolly. Hooking this thing up is great and so much easier. everything is set up level and I love it.
Hugh T - 07/28/2021


Very good service and the product was delivered on time. Have not used yet. Was bought as a spare.


Great product and the service at etrailer were exceptional as usual.


etrailer has always followed thru!


Great! Actually arrived four days early.


I needed a base plate to tow bar lock quickly. After checking several websites including the oem site, I found the best value with Etrailer. Great site, everything you might need for towing. Would use them again.




great product works as described


Work great.



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Info for this part was:

Employee Lindsey S
Written by:
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Employee Robert G
Expert Research:
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Employee Michael H
Expert Research:
Michael H
Employee Jameson C
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Employee Jacob T
Video Edited:
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Employee Wilson B
Updated by:
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