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Replaces the round plastic cap on your Pro Series or Fulton trailer jack with a 2" outer diameter round tube.
Features:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
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.
Works perfect but now I’m having a really hard time finding the caps that go on the trailer? If you have any advice I would sure appreciate it.thx
Product fits like a glove! I have the 1000 lb Reese jack. Company was awesome, great response, shipping, and customer service.
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.
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.
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 etrailer.com
cap fit perfectly. Well made.
Timely service/shipping and quality item from excellent company. Thanks,
Mike B.
7/12/2017
Still as good as new. Great doing business with this company.
I bought a used 2017 Triton LT-WCII jet ski trailer, but the cap on the jack was missing. I called etrailer.com 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 etrailer.com.
The jack cap fit perfectly and the license plate bracket was excellent.
Thanks!
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.
Fast delivery, nice interaction with the staff. Anything trailer - I will always go with etrailer.com.
Looks perfect. Haven’t tried to install it. The product, shipping and service was perfect.
Got the cap on time when they said I would. The cap fit perfectly. It was awesome dealing with etrailer.
Thank you etrailer
We got them to replace some that came out of new units on boats. Worked great!
Part fit perfectly fast shipping aswell
Tight fit but won't loose this off my pro 1000. Fast reasonable shipping. Thanks
Item as described. Fair price. Prompt shipping. Good communication.
Fit my boat jack real snug like hopefully it lasts awhile pro series jack
CAP WAS PERFECT FIT AND EASY INSTALLATI ON.
Perfect fit after cutting out a notch for the grease fitting.
Reasonable price and quick deliver. Part fits my trailer jack great.
Fits perfect. Fast shipping.
Perfect replacement.
Ordered and shipped the same day. Customer Service done right!!
Do you have a question about this Accessories and Part?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Gwendolyn Y.
10/9/2025
Happy to help, Shirley! What kind of caps are you looking for?