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

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

Item # BX8859
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Hitch Locks BX8859 - Keyed Unique - Blue Ox
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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. Call 800-298-8924 to order Blue Ox hitch locks part number BX8859 or order online at etrailer.com. Free expert support on all Blue Ox products. Guaranteed Lowest Price and Fastest Shipping for Blue Ox Base-Plate-to-Tow-Bar Lock. Hitch Locks reviews from real customers.
  • All Info
  • Reviews (7)
  • Q & A (8)
  • Videos (1)
  • Photos
  • Why etrailer?

Blue Ox Hitch Locks - BX8859

  • Base Plate Lock
  • 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 Product Line Review

Today we're going to be taking a look at the Blue Ox Receiver Lock. We've got three different sizes. For the Class 4 and 5 we've got the 5/8" extra long pin here. That part number is BX88212. Here in the middle we've got the Class 3 or Class 4, that's going to fit up to the 2" shank. This part number is BX8858.

We also have part number BX8859, this is for or Class 1 or Class 2. This one offers the 1/2" shank design. As you can see these are going to be perfect for securing your Blue Ox tow bar, ball mount, bike rack, cargo carrier, whatever it is you need to secure onto your vehicle and don't have to worry about unintentional disconnect or somebody taking it. Completely made in the United States. They put a nice chrome finish on it. It's going to give us a good, long lasting, good looking product.

There's a dust cap here on the end. That protects our cylinder style lock from any damage, dirt or debris getting inside of there. There's a couple different spots here you can see they've got a really nice nurled 00:01:18 or textured finish to it. It's going to help us get a good grip on it as we're trying to operate it in maybe some more extreme or inclement weather. As you can see here a cylinder key, just slide in 1/4 turn, we're going to have this release. This isn't like some of the other receiver hitch locks where you have to continually turn your key and thread that down on there. It's going to operate just like a standard hitch pin.

We'll slide it through, whether it's our tow bar, our ball mount or bike rack, whatever else it is, put the cap on, quarter turn the other way. As you can see it's nice and secure and we're ready to attach our vehicle to the back of our RV, we're ready to attach our trailer to our ball mount, or load up our cargo carrier and head down the road. Now that we've taken a good look at them and we've seen how they're going to work and how they're made, that will complete today's look at the Blue Ox Series of Receiver Locks. .

Customer Reviews

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

Average Customer Rating:  5.0 out of 5 stars   (7 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.

- BX8859

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) 345080

- BX8859

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! 679988

- BX8859

Work great. 417932

- BX8859

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. 377448

- BX8859

great product works as described 94833

- BX8859

Great product and the service at etrailer were exceptional as usual. 64470

- BX8859

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. 20169


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Info for this part was:

Written by:
Lindsey S
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Sarah W

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