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Replacement Round Cap for Pro Series and Fulton Trailer Jacks

Replacement Round Cap for Pro Series and Fulton Trailer Jacks

Item # PS500322
Our Price: $9.49
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Shipping Weight: 0.04 lbs
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Replaces the round plastic cap on your Pro Series or Fulton trailer jack with a 2" outer diameter round tube. 1-800-940-8924 to order Pro Series accessories and parts part number PS500322 or order online at Free expert support on all Pro Series products. Great prices and Fastest Shipping for Replacement Round Cap for Pro Series and Fulton Trailer Jacks. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (54)
  • Q & A (0)
  • Videos (1)
  • Photos

Pro Series Accessories and Parts - PS500322

  • Camper Jacks
  • Trailer Jack
  • Caps
  • Pro Series

Replaces the round plastic cap on your Pro Series or Fulton trailer jack with a 2" outer diameter round tube.


  • Round plastic dome cap
  • Polypropylene cap resists wear and corrosion
  • Fits 2" outer diameter round tube on Pro Series 1000 and Fulton 1000 trailer jacks (PSEJ1000101, PSEJ10000301, FTJ12000101, and FTJ12000301)
  • Quantity: 1 cap

Inner diameter fit

500322 Replacement Round Cap for Pro Series and Fulton Trailer Jacks

California residents: click here

Video of Replacement Round Cap for Pro Series and Fulton Trailer Jacks

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

Video Transcript for Pro Series and Fulton Trailer Jacks Replacement Round Cap Review

Jake: Hey guys, it's Jake here with etrailer. Today we're going to be taking a look at, and I'm going to show you how to install the Replacement Cap for Fulton and Pro Series Trailer Jacks. This is going to be able to replace your factory cap that came on top of your jack to protect the inside hardware from getting any water in it.The cap is going to have these two ribs on it to be able to grip the inside, to keep it from coming out and to protect it from getting any water. To get your cap in place, you want to set your cap on top. Now it is a little bit difficult to push it in with your hand, so we're going to take a rag, set it over top and tap it in with a mallet. There we go.The cap is going to be made of plastic, so you want to be very careful when tapping it into place.

With that being said, that's going to do it for our look and installation of the Fulton and Pro-Series Replacement Cap.

Customer Satisfaction Score:

Customer Reviews

Replacement Round Cap for Pro Series and Fulton Trailer Jacks - PS500322

Average Customer Rating:  5.0 out of 5 stars   (54 Customer Reviews)

Replaces the round plastic cap on your Pro Series or Fulton trailer jack with a 2" outer diameter round tube.


Perfect fit ! Would shop here again.



Its been a year and it still fits snugly and is wearing well.


My trailer, like most trailers, sits most of the time. When it's sitting, that jack stand sits vertical, meaning rain, leafs, dust, ect gets into that tube without the cover on. I'm a little anal, but having the cover on that jack makes me feel better, and will make my equipment last longer.


worked out great!


Excellent replacement for my Pro Series 1000. Add a small amount of silicone around the lip as it's installed to secure. Very quick service.


Im not sure what brand my trailer jack was but I ordered this because the diameter was close. I had to modify it a little to make it fit but in the end it covers the top of my jack. Shipping was fast as usual from


I bought a used 2017 Triton LT-WCII jet ski trailer, but the cap on the jack was missing. I called since I was not sure which cap would be correct for my trailer. The representative looked up my trailer and indicated that part number PS500322 is the proper cap for my jack. Sure enough, when it arrived, it fit perfectly. I am pleased with my experience at


Perfect fit after cutting out a notch for the grease fitting.


Thank you. The part was delivered.


Perfect replacement.


The on-line chat person was knowledgeable and provided the right part quickly. I received the item 2 days later!


This cap fit my camper jack perfectly. Plus, the price was significantly less than other sources and it arrived quickly. All in all, a good purchase!


Great Service, Tires and wheels arrived quick and in perfect condition.


Item as described. Fair price. Prompt shipping. Good communication.


The jack cap fit perfectly and the license plate bracket was excellent.


First off my needs were simple...
could have been written off as non
Essential....after contacting etrailer
To tell them my 10$ item was never delivered.... the company acted very professional and re shipped my item
Asap at no further cost....this is my first experience with etrailer and won't be my last....needless to say I'm very happy with both products and services


Fast delivery, nice interaction with the staff. Anything trailer - I will always go with


Fit my boat jack real snug like hopefully it lasts awhile pro series jack


It is just what I needed to cap off the crank jack. The process was seamless! Will use again if I need anything in the future.


Part fit perfectly fast shipping aswell


We got them to replace some that came out of new units on boats. Worked great!


Got the cap on time when they said I would. The cap fit perfectly. It was awesome dealing with etrailer.
Thank you etrailer


Reasonable price and quick deliver. Part fits my trailer jack great.




Timely service/shipping and quality item from excellent company. Thanks,

Mike B.


Still as good as new. Great doing business with this company.


Part fit fine. A little snug but I expected that. It’s holding up and it’s been over a year already.

Show More Reviews

See what our Experts say about this Pro Series Accessories and Parts

  • Replacement Top Cap for Pro Series Jack on Triton Trailer
    We have no way to look up the jack installed on your Triton trailer since trailer makers may change out the specified jack for any given trailer several times over the course of its production lifetime. I linked a photo of the Pro Series/Fulton part # PS500322 to show you its 1-3/4-inch diameter where it fits into a jack tube. If this dimension is close to that on your jack you should be just fine using this part. If not, please send a photo of your jack along with any part numbers you...
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  • Replacement Cap Option for a Reese TowPower Side Wind Trailer Jack
    Although we do not carry the Reese TowPower Side Wind Trailer Jack, I may have a solution for you. The Replacement Round Cap for Pro Series and Fulton Trailer Jacks # PS500322 is a round plastic dome cap that is compatible with jacks that have a 2" outer diameter round tube. If the inner diameter of your round tube is about 1-3/4" then this will work great for you! Fulton, Pro Series, and Reese are all owned by the same parent company so it is likely they have very similar caps. I have...
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  • Replacement Plastic Cap for Shelby Swivel Jack
    If you are looking for a replacement cap that fits a 2 inch outer diameter tube you would want # LC115863 or # PS500322. These fit an inner diameter of 1-3/4 inches and should fit your Shelby jack. You will want to measure to confirm fit, but this is the standard size.
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  • Replacement Cap for Pro Series 1000 Trailer Jack
    It sounds like you want the cap for the Pro Series Snap-Ring Swivel Marine Jack - Bolt On - Sidewind - 10" Lift - 1,000 lbs # PSEJ10000101. For that you will want the Replacement Round Cap for Pro Series and Fulton Trailer Jacks # PS500322. This fits the 2" outer diameter round tube on Pro Series 1000 and Fulton 1000 trailer jacks.
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  • Replacement Dust Cap For Fulton 800 Lb Jack
    I spoke with the Fulton rep to get more clarification. He told me that your Fulton 800 lb jack will have two different ways the dust cap will attach. One of the dust caps will be attached by a clip and the other will just fit on the end of the jack. Per the representative I spoke with yesterday, if you need the dust cap that is compatible with a clip, the Replacement Cap for 2" Diameter Fulton Jacks, part # F091754000 will fit your Fulton jack. It comes with a hole in the cap for the clip....
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  • Replacement Cap for Swivel Jack with 1.725 Inch Inner Diameter
    If the inner tube on your swivel jack measures 1.725", the Replacement Cap part # PS500322 would be your best option for replacement without knowing the exact model of jack you have. The replacement caps we offer are all specific to certain jacks so please be aware that finding an exact fit may be difficult. However, the sleeve of this cap measures 1-3/4" and since there is a bit of room for error I do believe it will work but I cannot confirm 100% as we have no way of testing prior. You...
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  • Replacement Gears and Cap for Fulton 3,000 Pound Trailer Jack
    I believe the gears you need are # BD500106. There is a picture on the product page below the description that shows the measurement of each piece so you can compare them with what you have. For caps there are a few different options. Cap # F091754000 fits 2 inch diameter jack tubes and is held on with hardware. Cap # PS500322 also fits 2 inch jack tubes but is a friction fit. And cap # F500358 is for 1-7/8 inch jack tubes.
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  • Replacement Fulton Round Trailer Jack Cap Options
    We have a variety of Fulton replacement caps for trailer jacks but I wasn't able to locate what your 0951503-00 looks like even on Fulton's site. With that being said, here are the options that we have: Replacement Round Cap for Standard 2" OD Jacks - # PS500322 Replacement Cap for Fulton XP15 Jacks - # F500324 Replacement Cap for Fulton XP10 Jacks - # F500323 Replacement Cap for Fulton Marine 2" OD Jacks - # F091754000 Hopefully one of these is what you're needing!
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Do you have a question about this Accessories and Part?

Info for this part was:

Employee Jacob T
Video Edited:
Jacob T
Employee Adam R
Expert Research:
Adam R
Employee Laura H
Written by:
Laura H
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C
Employee Jacob H
Installed by:
Jacob H

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