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Blue Ox Base Plate Kit - Fixed Arms
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Blue Ox

Blue Ox Base Plate Kit - Fixed Arms

$588.13
Retail:$609.00
You Save: $20.87
Tow Bar Base Plate

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etrailer Installation
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Custom designed to fit your vehicle so it can be safely towed behind your RV, this base plate has low-profile reinforcements, providing your vehicle with a streamlined look when you're not flat towing. Base plate bolts directly to your chassis. Great Prices for the best tow bar base plate from Blue Ox. Blue Ox Base Plate Kit - Fixed Arms part number BX3505 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (414)
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Blue Ox Tow Bar Base Plate

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • Ready for Flat Towing: Provides solid connection points so you can safely tow your vehicle behind your RV.
  • Blends In When Not Towing: Low-profile reinforcements keep the front end looking streamlined.
  • Spreads Force Evenly: Crossbar support beam distributes towing stress across the chassis for stability.
  • Built to Last: Durable, powder-coated steel resists rust and corrosion through miles of travel.
  • Works with Multiple Tow Bars: Pairs with Blue Ox models and adapts for Roadmaster or Demco systems.
Made in USA

Features to know about

Built for Reliable Flat Towing: Fixed-Arm Base Plate That Bolts to the Chassis

When you want a strong, no-fuss towing setup, this base plate kit gets it done. It bolts directly to the chassis—no welding required—for a solid connection you can trust on long trips. The sturdy design spreads towing forces evenly to help reduce stress on the vehicle’s suspension, and the fixed draw bars form a dependable link with your Blue Ox tow bar for consistent, secure towing.

Keeps a Clean Look Up Front: Low-Profile Reinforcements and Visible Crossbar Support

Flat towing setups don’t have to ruin your front-end appearance. The low-profile reinforcements and crossbar support beam blend smoothly with the bumper for a streamlined look when you’re not hooked up. It’s visible but tidy, giving your vehicle a functional yet finished appearance without bulky hardware sticking out.

Made to Last Through the Miles: Durable Steel Build with Rust-Resistant Finish

This base plate is built from steel and powder coated to resist rust and corrosion. Whether it’s on daily drives or long hauls, the tough construction holds up through miles of weather and road grime so you can tow with confidence year after year.

Straightforward Setup for DIY Towing: Bolt-On Installation with Included Hardware

If you like doing your own installs, this kit is designed with you in mind. It bolts securely to the chassis using the included mounting hardware—no welding required—for a strong, accurate fit. The setup makes it easy to get your tow rig ready for the road without complicated steps or extra fabrication.

Fits Your Existing Gear: Adapter Options for Different Tow Bars

Already running a tow bar setup? This base plate connects directly with Blue Ox tow bars for a perfect match. It’s also adaptable for use with Roadmaster tow bars using adapter RM-031 or RM-031-5, or with Demco tow bars using adapter DM9523041 (all sold separately). Distance between brackets is 24" and bracket height is 14", so you can plan your system alignment easily.

Specs

Dimensions

  • Distance between brackets: 24"
  • Bracket height: 14"

Warranty

  • Warranty: 3-Year warranty

Diagram showing the five essential components of a flat towing setup — tow bar, base plates, safety cables, tow bar wiring, and supplemental braking system — labeled to explain how a vehicle connects to an RV for safe towing.

  • Tow bar: links your towed car to your motorhome. It attaches to the custom-fit base plates that install on the frame of your towed car.
  • Base plates: install on the frame of your towed car and provide mounting points for the tow bar.
  • Safety cables: ensure that your towed car does not separate from your motorhome in the event that your tow bar becomes detached.
  • Tow bar wiring: allows your towed vehicle’s signal lights to sync up with your motorhome’s tail lights, which is required by law in most states.
  • Supplemental braking system: brakes your towed car when the brakes in your motorhome are activated, preventing wear on the motorhome and decreasing braking distance for your entire setup.

BX3505 Blue Ox Baseplate - Standard Tabs

Item # BX3505

Installation Details BX3505 Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.8

414 reviews
Review sort icon
Custom designed to fit your vehicle so it can be safely towed behind your RV, this base plate has low-profile reinforcements, providing your vehicle with a streamlined look when you're not flat towing. Base plate bolts directly to your chassis.

by:

Etrailer.com shipped the item quickly. The baseplate arrived on time. Installation was easy and all the parts fit perfectly. We towed our Cherokee the very next day to Arizona from California. Everything worked perfect.



by:

I thought price was a little high, but they worked very well. Fit perfectly and looked good. Came with clear installation instructions. The nuts on steel wires made it possible to slide them deep inside the frame where the support plates bolted on without any trouble.



by:

My blue ox base plate kit came right on schedule. I met my mechanic at the shop and with a hydraulic lift and air tools we had it installed and secured in about 30 minutes. I could have done it alone at home in about 1.5 hrs. It fits perfect and looks like it was part of original car frame.
Thx



by:

Installing it today. I was impressed with the quality of components and construction. I test fitted and it slid right in. Now to drill the holes. Another thing was the quick delivery and packing. I definitely order from etrailer again.



by:

The predrilled holes didn't quite match up which required drilling out a little. Other than that it went quite well. It took this eighty year old man about two hours to get the whole thing mounted.



by:

The Blue Ox BasePlate has worked out very well. We've traveled over 3,000 miles on 4 separate trips....with multiple hookups and detachments. Great system. The only constructive comment is the electric hookup for lights/turn signals was a little wonky but my mechanic worked it out with the manufacturer.



by:

Installed this on a 2014 Chevy Express 3500 15 passenger van. Install was time consuming, as holes needed to be drilled (went through 2 drill bits) and the nuts must be fished through the frame, then "caught" by the bolt. I think there were 12 of them! Instructions were clear, though, and I've safely towed without incident over 7,000 miles in the past year. Definitely rock solid! Paired up with a Blue Ox Aventa 7,500 lb tow bar.



by:

Easy enough install on my 86 samurai. Had to do some persuading but nothing major. I did need to notch the bottom of the bumper in two spots to clear the mounting brackets. Seems awfully expensive when you see what you get.



by:

Quality built product! And outstanding customer service by Ashley!!



by:

I had a simple ball hitch setup for my 1999 Jeep Wrangler for towing behind our RV. Our first trip out with it, the bolts that attached the bar connectors to the front of the Jeep came loose. I was fortunate that they didn't come out completely and cause a major accident. I was able to tighten them again, and we had no additional issues on our trip. Of course, this made me extremely nervous with my 'budget' route to tow the Jeep so I began looking for a better, more reliable solution.

Blue Ox was the name that kept coming up so I purchased the BX1120. The build quality is outstanding, it's extremely solid and very durable. Installation time was about an hour and a half once I had the right tools, couldn't find my 1/2 inch socket set! I'm using the Blue Ox Alpha tow bar with this setup.
I will say that having a second set of hands to install is valuable, my son had to come help me get the drivers side bolts in while I held the steering housing in place.

All in all, I'm very pleased with the product. It went in easy and should save my nerves on our next road trip!

1999 Jeep Wrangler Sport
After market front bumper (Plenty of clearance with this specific mount)



by:

A well-built, stout and heavy-gauge base plate with beautiful welds. It brings peace of mind for towing my Cherokee Sport cross-country behind my Class C without worry of mechanical failures on the open road. Because so much money and liability rides in tow, Blue Ox is the first choice.



by:

First of all, the staff at etrailer has always been there with answers with anything. Fitment, installation, usage etc. Second. The install was easy with the enclosed instructions. I did it by myself with only getting help to raise and lower the bumper. After several thousand miles of towing, still tight and still looks great



by:

1 year later, it’s been used for over 1500 miles and held up great. I did the install and had a weld shop tax the bolts do they wouldn’t back out.



by:

I'm not giving the products the stars as much as the woman who helped me select them and turned me onto the "road-master" product line. Road-master had a "towed-car" hitch for my 2002 Mazda Protege. It was a blessing to have met her acquaintance.



by:

Base plate is well built and fit well. As I would expect from Blue Ox products. My only complaint and the reason for 4 stars would be the horrible instruction. Pictures are absolutely horrible. Not a big deal for the mechanically inclined, but not everyone fits that category.



by:

Very simple to install, just need to drill a few holes in the frame. Comes with everything you need except a couple basic washers (mine came with 3 lock washers and 2 standard flats for 4 bolts)…

Would be nice to have the torque specs also in the instructions but the busted bolt is on me!



by:

Perfect fit, well built of high quality materials. In my mind you just can't get much better than Blue Ox. The only issue is that the BX1120 doesn't have removable twist lock tabs. The fixed draw bar mounting tabs are at just the right height and position to play havoc with your shins when the draw bar is not installed. I solved that problem with a shin guard I made of 2 inch schedule 40 PVC. (see photo) Fits perfectly, guards the breakaway switch and lighting connector when not in use, and solves the shin interference problem.



by:

Outstanding communication. Outstanding customer service. Outstanding towbars and baseplates. Will be back.



by:

Once again just great service from etra iler



by:

Easily installed but proper alignment needs to be maintained before drilling the additional hole required for through bolts.



by:

Not a bad install the nuts on the end of the wires was a little strange and odd to use and bend….. worked out great haven’t towed it yet ….bolted in and ready. There’s not really any place on thes 06 Wrangler to put those safety cables to the frame. Alex T in sales was great.



by:

The kit is well built and comes with all the necessary hardware to install. Installation was a breeze and asthetically blends in well with the front of the truck. Great job on the design and the production!



by:

We really like our blue ox towbar mounts from etrailer. We're excited to be able to flat tow our 2001 F-250 with our ATV in the bed. Real game changer,, Thank You etrailer
A few pictures of how I attach it



by:

4 it's in solid, but the [finish] that was used killed it from being a five.

The installation took about four hours. I had a tight interference fit between the frame rails. I wish I had an 18-24" linear ram, but I didn't. So two hydraulic floor jacks, with 4 - 24" welding clamps, and two 12" C-clamps, a short 2# sledge did the trick. Nothing a little spray paint can't fix. Four bolt holes lined up nicely. Two 1/2" drilled holes from the bottom were easy leverage to set up. Two 1/2" drilled holes inside to outside, were quite the challenge to get behind the drill. All fasteners now torqued to specification with red locktite. Added the 1/2" safety cables, made an adjustment in the lower airdam. And presto, here you have it. Now time to set up diode kit, and brake away switch installation.



by:

Fit well, excellent & durable construction. has served me well, and will be utilized again this coming summer in our travels towing my little Suzuki behind my motor home.


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See what our Experts say about this Blue Ox Tow Bar Base Plate

  • Blue Ox Base Plate Kit Recommendations for a 1994 Suzuki Sidekick
    There are two options for Blue Ox base plates for your 1994 Suzuki Sidekick. If you have a 4-door 4 wheel drive model you would want the Blue Ox base plate kit part # BX3505. If you have a 2-door model you would want the # BX3503. For a tow bar you could go with the Blue Ox Alpha part # BX7380. This comes with safety chains. For lighting you can use the bulb and socket kit, # RM-155, and not have to worry about cutting and splicing into the vehicle wiring. And finally, most states...
    view full answer...
  • Blue Ox Tow Bar Recommendation to Connect to Blue Ox Base Plate to Replace Roadmaster Stowmaster
    The Stowmaster tow bar part # RM-501 can't be adapted to fit a Blue Ox base plate kit. There are no adapters that will work with the Stowmaster. Best option we have would be a similar Blue Ox tow bar like the Blue Ox Acclaim part # BX4330 which will work great and has a coupler style RV attachment like the Stowmaster. This will work great with your Blue Ox Base Plate kit part # BX3505.
    view full answer...
  • Correct Tow Bar For Base Plate BX3505 On 1993 Suzuki Sidekick
    I believe that you are referring to the Blue Ox Base Plate Kit - Fixed Arms for 1993 Suzuki Sidekick # BX3505 on the 1993 Suzuki Sidekick and you may have just mixed up two of the digits which is easy to do, so no worries. If you are in fact referring to the Blue Ox Base plate BX3505 the Blue Ox Acclaim Tow Bar part # BX4330 is exactly the tow bar that you need. Here is a list of other Blue Ox tow bars that we currently carry that are compatible with the BX3505 base plate: Blue Ox Adventurer...
    view full answer...
  • Is a Base Plate Adapter Needed to Tow a 1997 Geo Tracker with a Roadmaster Sterling Tow Bar
    Does you 1997 Geo Tracker have a Blue Ox Base Plate kit # BX3508 for a 2-door or part # BX3505 for a 4-door installed on it? If so, then to use a Roadmaster Sterling Tow Bar # RM-576 you will need to also use the # RM-031-5 that you referenced. Since the serial number of your tow bar is above 14,501 this adapter will fit.
    view full answer...
  • What Adapter Is Needed to Use the Blue Ox Base Plate Kit with the Tow Ready Adjustable Tow Bar
    In order to use the Blue Ox Base Plate Kit part # BX3505 on your 1994 Suzuki Sidekick with the Tow Ready Adjustable Tow Bar part # 63180, you will also need to use the Blue Ox Base Plate Adapter part # BX8833. If you also need safety cables to go between the toad and tow vehicle I recommend using part # RM-645. Please keep in mind that in order to complete your flat-towing setup you will also need flat-tow wiring, a supplemental braking system, and possible high-low adapter. If you would...
    view full answer...
  • Can Tow Ready Tow Bar part # 63180 Connect to Blue Ox Base Plate Kit
    If you had the Tow Ready tow bar part # 63180 you'd be able to use the Blue Ox adapter part # BX8833 to connect to your Blue Ox Base Plate kit part # BX3505. There's no way to use the Curt tow bar you mentioned with the Blue Ox tow bar as there are no adapters available.
    view full answer...


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Carrie F
Updated by:
Carrie F

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