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Kwikee Electric RV Step Complete Assembly - Single - 39 Series - 23-7/8" Wide

Kwikee Electric RV Step Complete Assembly - Single - 39 Series - 23-7/8" Wide

Item # LC3724742
Our Price: $677.80
You Save: $195.15
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Electric step assembly includes everything you need to automatically open and close the steps with your RV door. Motor and control unit extend and retract step. Switch kit overrides step retraction. Amber light illuminates when step extends. Great Prices for the best rv steps from Kwikee. Kwikee Electric RV Step Complete Assembly - Single - 39 Series - 23-7/8" Wide part number LC3724742 can be ordered online at or call 1-800-940-8924 for expert service.
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Kwikee RV Steps - LC3724742

  • Electric Step
  • Motorhome
  • 1 Step
  • 24 Inch Wide Step
  • Kwikee
  • 7 Inch Drop/Rise
  • Steel
  • 24-3/4 Inch Wide
  • No Ground Contact

Electric step assembly includes everything you need to automatically open and close the steps with your RV door. Motor and control unit extend and retract step. Switch kit overrides step retraction. Amber light illuminates when step extends.


  • Electric RV step automatically extends when you open the door and retracts when you close the door
    • Includes everything you need - motor, control unit, switch kit, and light
  • Motor works with gearbox to extend and retract the step
  • Control unit wires step and step light to the opening and closing of the RV door
  • Switch kit allows you to override automatic retraction and lock step in extended position
    • Keeps the step out when parked, whether the door is open or closed
  • Amber incandescent light illuminates step to make it easy to see at night
  • Integrated safety features help prevent damage to the steps
    • Motor retracts the steps if they strike an obstacle during extension
    • Ignition override retracts the steps when the vehicle's engine is started
  • Non-slip tread and easy-to-see reflective strips on step surface
  • Sturdy, powder coated steel construction with weatherproof wiring withstands the elements
    • Solid steel drive rods and stainless steel bushings provide additional durability
    • Air pressed rivets at pivot points ensure long-term strength
  • Simple installation with existing mounting holes and wiring harness
    • Hardware sold separately
  • Made in the USA


  • Extended height: 10-3/4"
    • Folded height: 5-1/8"
  • Overall width: 25"
  • Mounting plate dimensions: 24-1/4" wide x 12-1/4" deep
  • Bolt pattern: 20-1/2" wide x 7-1/2" deep
  • Step dimensions: 23-7/8" wide x 10-1/4" deep
  • Drop/Rise: 7"
  • Voltage:
    • Motor: 12V
    • Switch kit: 250V
  • Control unit amperage: 10A
  • Light bulb type: C193, incandescent
  • Control unit wire gauge:
    • Green: 12 AWG
    • Purple: 16 AWG
  • Weight capacity: 300 lbs
  • 1-Year warranty

Note: This step assembly includes everything you need to install and use the steps on your RV.

The included 4-way plug fits into the existing wiring harness on your RV. Most vehicles should having this wiring already set up. In the event that your RV is missing the wiring, a 4-way pigtail is included to help you hardwire the unit to your RV.

Safety Features

The Kwikee steps include several safety features in an effort to prevent injury to you or your passengers and damage to the RV steps. If an obstruction is detected while extending, the steps will halt and retract back into the stowed position. The steps will also retract when you turn on the vehicles ignition, even if the automatic retraction override has been activated, in case you forget to stow them before driving away.

Will Kwikee Electric Steps Work for You?

Electric steps are typically installed on RVs and some travel trailers. The electric steps from Kwikee install and fold up underneath the camper for simple storage. To ensure you choose the correct size for your application, there are a few measurements you will need to take.

Kwikee In and Out

The Kwikee electric steps attach to the underside of the camper chassis, directly beneath the doorway. To decide which size you'll need, locate the space available underneath your camper that lines up with the doorframe, and measure the width and depth. You will need a mounting space that is at least 25" wide and 12-1/4" deep.

If it turns out you have more or less space beneath your doorway, there are other step assemblies available with bracket sizes ranging from 24-3/4" wide to 37-1/4" wide. A full list of the available steps is below.

Outriggers for RV Steps

Outriggers - metal brackets that act as an extension (LC301704 - sold separately) - may be needed for installation depending on the model of your original stairs. These provide extra length if the old steps are longer or wider than the new.

Once you know where the mounting bracket will go and what size mounting bracket you need, that spot will be used as the "mounting point" to determine how many steps you will need.

How Many Steps Do You Need?

Kwikee Entry Height

To decide on how many steps you'll need, measure from the mounting point to the ground. This is called the entry height. The entry height should roughly match the height of the steps when they're fully extended, plus 6" to 8" to account for the drop from the bottom step to the ground. This measurement will also tell you how many steps you need.

The chart below displays mounting bracket widths in the first column and entry height measurements in the second column. The third column shows the corresponding part numbers. Use the mounting bracket width and entry height measurements you took to determine which part number will fit your RV. Choose the bracket size that is closest to your measurements without going over.

This page's step assembly is in bold text.

Mounting Bracket WidthEntry HeightPart Number (Complete Assembly)Part Number (Replacement Assembly)
24-3/4"15-5/8" - 17-5/8"LC3747453LC3747452*, LC3747451**
25"16-3/4" - 18-3/4"LC3724742n/a
25-1/2"27-7/8" - 29-7/8"LC3658373LC369552*, LC365837*
25-1/2"20-1/8" - 22-1/8"LC372261LC3722615*, LC3722617**, LC3722616***
25-1/2"20-1/2" - 22-1/2"n/aLC3725791*
25-1/2"12-1/8" - 14-1/8"LC3723383LC372338**
25-1/4"13" - 15"LC3711363LC371136*, LC3711361**
25-3/4"22-7/8" - 24-7/8"n/aLC372558*
25-5/8"11-7/8" - 13-7/8"LC3691461LC369146*, LC3691462**
25-5/8"13" - 15"n/aLC3726041*
25-7/8"23-1/4" - 25-1/4"LC3726892LC3726891**
26-5/16"27-1/4" - 29-1/4"LC3694042n/a
29-3/8"18" - 20"LC3722661LC372266*, LC3722662**
30-1/4"15-1/4" - 17-1/4"n/aLC372779*
30-3/8"17-1/4" - 19-1/4"n/aLC427247*
30-5/8"20-1/2" - 22-1/2"n/aLC375632*
31-1/2"28-5/8" - 30-5/8"n/aLC375821*
31-1/2"12-3/8" - 14-3/8"LC3756271LC3756272**
32-3/8"20-1/4" - 22-1/4"LC3722862LC3722863**
37-1/4"18" - 20"n/aLC3694112*, LC369411***

*Motor and control unit

**Motor and switch kit

***Motor only

How Do You Install the Steps?

To install the steps:

  1. Hook up the steps to power to verify that all components are in working order
  2. Make sure the camper is level on flat ground
  3. Lift the steps into the mounting space and prop into place
  4. If needed, mark the mounting holes on the camper and drill

    -Set aside steps before drilling

  5. If needed, install the outriggers
  6. Align step mounting holes and secure in place with carriage bots and flange lock nuts

    -Make sure bracket is backed up fully against the I-beam on the chassis

    -Hardware not included

  7. Tighten hardware until snug
  8. Make sure assembly is sitting square and level
  9. Torque the hardware tight
  10. Connect the appropriate writing to your vehicle's source

3724742 Lippert Components (LCI) Quickie 39 Series Motorized Motorhome Entry Step - 1 Stair - 7" Drop/Rise - 23-3/4" Wide - 300 lbs

Kwikee Part Number 903909025

Customer Satisfaction Score:

Customer Reviews

Kwikee Electric RV Step Complete Assembly - Single - 39 Series - 23-7/8" Wide - LC3724742

Average Customer Rating:  4.8 out of 5 stars   (24 Customer Reviews)

Electric step assembly includes everything you need to automatically open and close the steps with your RV door. Motor and control unit extend and retract step. Switch kit overrides step retraction. Amber light illuminates when step extends.


Exact replacement for Kwikee series 39 Electric step.
I had ordered one from a competitor before ordering from it arrived it was wrong step (not even close) Fast shipping!
I ordered on a Monday and received on Thursday. It took longer to remove old step than to install the new one .
Make sure you have replacement mounting bolts incase the old ones break. 3 out of 4 of mine broke.



Working great It was a exact replacement


After ordering the incorrect model etrailer helped me get the correct step and works perfect.


Kwikee Steps installed easy and work well.
ETrailer provided excellent customer service and support.


Excellent product, bolted right in with no issues. Works as it should



Still working fine in every way after a year of light use


This step was the perfect fit for my step that needed to be replaced. My neighbor was able to connect it and it works great. I’ve had it a year and never worry about the step not going out when I need it to


My ordered part arrived quickly and bolted on very easily. I will certainly be back when another part is needed for my Class C motorhome.


Fast shipper and quality step have not installed it yet but will install next week .Great material n well made Thank you. Great instructions as well .


Very happy. Works well and it is a nice feature that you can allow it to just stay down. It can handle weight as well.


Good sturdy product easy to install. Had all the info here from etrailer. Good service and fast response I will definetely do business here again


We have it on our bus. Very hard for Senior Citizens to get in with out it.


Looks great fast shipping



Great work just like the day i installed them


I was impressed!!! Never before got an item so fast
Thank You!


We have not installed step as of yet but all looks good and the delivery time etc was absolutely excellent. It was sent from eastern USA to Vancouver Island on west coast Canada in very short order.
Thank you for your diligence in having the part we needed and your ability to ship in such a distance so quickly.


Don S.


After a year they are still working great. A little work to install but they are made to fit most any RV


These folks had the best price I could find, they had it in stock and they got it delivered a day earlier than promised. Doesn't get much better than that.


Good quality, excellent shipping time!


Arrived on time it appears to be exact match


Crazy fast shipping and a good price.








See what our Experts say about this Kwikee RV Steps

  • Replacement Kwikee 39 Series Step Needed for a 1998 Catalina Coachmen 220RK
    If you are wanting to replace your Series 39 electric step directly then what you will need is the Lippert Kwikee 39 Series Electric Step # LC3724742 which comes with the motor, gears, control module, and switch kit with the wiring adapter. Attached is a wiring diagram (which some of the connections are already completed) and an installation video for you to reference if you are going to be doing the installation yourself.
    view full answer...
    Image 1 for
  • Recommended Kwikee Series 39 Step Replacement Comparison for Motorhome
    The Lippert Kwikee 39 Series Electric Step LC3724741 and # LC3724742 have the same motor and switch, but the # LC3724742 comes with the control unit included and the other does not. Other than the control unit, these parts are identical.
    view full answer...
  • Will 39 Series Kwikee Step Replace 29 Series Step
    The Kwikee 39 Series Electric Step # LC3724742 will replace your 29 Series but you will need to get a new complete assembly. The Kwikee 39 Series Electric Step # LC3724742 comes with the motor, control unit, and switch kit which you would need to use. It will also require Mounting Hardware for Lippert Electric and Manual RV Steps # LC118155-72
    view full answer...
  • Comparing Kwikee 28 Series and 39 Series Steps from Lippert
    The Lippert Kwikee 39 Series # LC3724742 and 28 Series # LC3747453 single steps are pretty similar with just a few dimensional differences. Here are the dimensions: Kwikee 39 Series Entry height: 11" Step dimensions: 23-3/4" wide x 10-3/8" deep Mounting bracket dimensions: 24-3/4" wide x 4-1/4" tall x 12-1/8" deep Drop/Rise: 7" Kwikee 28 Series Entry height: 9-3/8" Step dimensions: 23-3/4" wide x 10-3/8" deep Mounting bracket dimensions: 24-1/4" wide x 5-7/8" tall x 8-9/16" deep Drop/Rise:...
    view full answer...
  • Recommended 2 Step Powered Step Unit to Replace Kwikee 28 Series Step on Travel Trailer
    According to Lippert, the closest they can get to the 22 inch by 6-1/2 inch bolt pattern of your existing step would be the # LC372261 Kwikee 32 series, which has a 22 by 8 inch bolt pattern. Although you'd need to drill a couple of holes, the Series 32 would be your best bet as they don't have a 2 step option that would match up exactly to your existing bolt holes..
    view full answer...
  • What Replaced Kwikee RV Step 29 Series Steps
    So I checked with Lippert and for the 29 series there are no replacement parts available. They stated that this step is obsolete now and replaced by the 39 series # LC3724742.
    view full answer...
  • Replacement Kwikee Electric RV Step With Bolt Pattern of 20-1/2" x 7 -1/2"
    I think what you are looking for is the Kwikee Electric RV Step, # LC3724742. This is the 39 Series step that is 23-7/8" wide step with a bolt hole mounting pattern that is hole dimensions of 20-1/2" x 7 -1/2". Please note the linked product review and installation videos below. The product review video shows the bolt hole pattern at just before the 6 min. mark.
    view full answer...
  • Is Cover Needed for Motor and Wiring of Kwikee 39 Series Electric Step # LC3724742
    The motor and wiring of the Kwikee 39 Series Electric Step # LC3724742 that you referenced is totally sealed and waterproof so additional covers are not needed. This is why none are made for it.
    view full answer...
  • Recommended Replacement For Kwikee 903906000 RV Electric Steps
    According to the code you provided you would have a 39 series step so the Kwikee Electric RV Step Complete Assembly # LC3724742 would be the correct replacement. The exact replacement for this specific model was discontinued so you'll notice that the dimensions are slightly off (about 1/4") but this is going to be the closest option. In my experience it's best to replace the door sensor when you swap out the steps since the it always seems be the cause of any malfunctions after steps...
    view full answer...
  • Does Control Unit Come with the Lippert Kwikee 39 Series Electric Step # LC3724742
    The motor and control unit are included with Lippert Kwikee 39 Series Electric Step # LC3724742. A power switch and sensor are also included. I have linked a video review of this step for you.
    view full answer...
  • Can Kwikee Series 39 RV Powered Entry Step Replace a Series 26
    According to the Kwikee Step folks at Lippert, the # LC3724742 Series 39 step will indeed work with your current wiring and will bolt up just like your current set of steps. The folded height would be definitely place the bottom of the step assembly closer to the underside of your RV, so if you're looking to maximize ground clearance, the series 39 like # LC3724742 would be a good choice. I've linked you to a demonstration video showing a typical installation.
    view full answer...
  • Which Electric Steps Will Fit My 1995 Winnebago RV?
    You will want to start by measuring your current steps, or at least measure the mounting location to find out what size steps will fit in that area. You can then match up a set of steps on the link I attached for you. These kits come with everything necessary for installation. For example, if you have a single powered step that slides out then you will likely be able to use something like Kwikee Electric RV Step Complete Assembly - Single - 39 Series - 23-7/8" Wide # LC3724742. This uses...
    view full answer...
  • Replacement Entry Step For a 2008 Coachmen Freedom Express 21QB
    Unfortunately Thayne, I have no way to look up what parts were installed on your 2008 Coachmen Freedom Express 21QB motorhome. So you are going to need to measure for the width of your step and the amount the step needs to drop. Here is a list of the different single steps we offer with the widths. Kwikee Electric RV Step Complete Assembly - Single - 26 Series - 23-1/2" Wide # LC3711363 Kwikee Electric RV Step Complete Assembly - Single - 28 Series - 23-5/8" Wide # LC3747453 Kwikee Electric...
    view full answer...
  • Replacement For Kwikee 39 Series Single Step
    I checked with the manufacturer, and found out the frame by itself was not an available replacement part for the Kwikee 39 Series. So you would need to replace the entire assembly: - Kwikee Electric RV Step Complete Assembly - Single - 39 Series # LC3724742 So while I know this is not the news you were looking for, it is the only option for a replacement for your bent frame.
    view full answer...
    Image 1 for
  • How to Determine Steps For Motorhome With 18 Inch Entry Height
    While I couldn't reference that model number, we do have an option for motorhome steps that have an 18 inch entry height, but you'll need the mounting bracket width as well. The only option for steps of that height are the Kwikee Electric RV Step Complete Assembly - Single - 39 Series # LC3724742. The # LC3724742 are 23-7/8" wide x 10-1/4" deep and require a mounting space that is at least 25" wide and 12-1/4" deep.
    view full answer...
  • Mounting Bracket Dimensions of Lippert Kwikee 39 Series Electric Step # LC3724742
    I attached a picture that shows the dimensions of the Lippert Kwikee 39 Series Electric Step # LC3724742 relevant for mounting the step. This could still mount on your Beaver Patriot but it's likely you'd have to move the mounting brackets out of the way and then attach this directly to the RV.
    view full answer...
    Image 1 for

Do you have a question about this RV Step?

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Updated by:
Kathleen M
Employee Brian T
Updated by:
Brian T
Employee Halie H
Updated by:
Halie H
Employee Cody B
Updated by:
Cody B
Employee Dustin K
Video Edited:
Dustin K
Employee Chelsea B
Written by:
Chelsea B
Employee Michael B
Installed by:
Michael B

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