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Dust Cap Driver Tool - Small - for 1.986" Grease Caps

Dust Cap Driver Tool - Small - for 1.986" Grease Caps

Item # 290-991
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Accessories and Parts 290-991 - Dust Cap Driver Tool - Redline
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Redline Accessories and Parts - 290-991

  • Trailer Bearings Races Seals Caps
  • Dust Cap Driver Tool
  • Redline

  • Small dust cap driver tool
  • Designed for 1.986" OD grease caps
    • fits #s RG04-020, 46749 & 21-3-1

Custom-sized specifically for trailer axle dust caps, this dust cap driver can be used for installation, removal and servicing trailer hubs without denting the dust caps.

151425 (290-991) Redline Dust Cap Driver Tool

290-991 Dust Cap Driver Tool - Small - for 1.986" Grease Caps

Video of Dust Cap Driver Tool - Small - for 1.986" Grease Caps

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

Video Transcript for Redline Dust Cap Driver Tool Review

Today we are going to review the Dust Cap Driver Tool. This tool comes in three different sizes. The one we are going to use today is for dust caps that are 1.986 inches and this is going to be part number 290-991. This is the one we are going to use on the demonstration today but notice the other two part numbers are pretty much identical accept for the diameters. Then we have got the dust cap and we are going to uses the 1.986 diameter and basically all it does is sit in place like that and use a mallet and drive it into the hub. 00:30

Lets use it in actual practice. There are a couple of ways you can do this. You can set it on there maybe give it a couple of taps just to help get it started or you can start the whole way and drive it in. It makes installing the dust cap that easy and you do not have any dents on the outside of the cap as well. With that, that will finish the review of the Dust Cap Driver Tool.

Customer Reviews

Dust Cap Driver Tool - Small - for 1.986" Grease Caps - 290-991

Average Customer Rating:  4.9 out of 5 stars   (128 Customer Reviews)


Product was sent in an insufficient envelope which arrived empty with one edge torn. They should use more robust envelopes (e.g. The padded plastic type instead of brown paper) or a small box for this tool. I will be calling bustier service in hopes they will rectify this by sending another in better packaging

Thank you for letting us know. Customer Service will be in touch with you.
-- Etrailer Expert Brooke M - 05/03/2022


This Dust Cap Driver Tool is priceless. If I had not purchased this I surely would have squashed my new dust covers. They fit tight and require some pounding. This tool makes the force equal all the way around. Apparently they did not use one on my original cap because it was smashed and the spinning cutter pin wore a hole in the rubber plug. Buy it.


Items was made of thicker metal than I expected. Package was "lost" in shipping and ETrailer shipped a second with no questions. Great customer support!


I bought these against future need. I was taking the trailer on a long trip to from Tennessee to Minnesota and ending in Pennsylvania. Bought this to help if a bearing replacement was needed enroute, which didn't happen.


Definitely worth the investment. Makes removal and installation of most 2" dust caps a breeze


This tool is great. Couldn’t get the dust cover without denting it.


Works great, no more distorted caps from using a hammer to install


This is an incredible product and it helped me immensely in getting my dust cover back on my trailer wheel bearing. Screwdrivers and blocks of wood that are used to pound the covers on the bearing just don’t do the job quite like this tool!


Great product. Problem is that as a boat owner I will not have to use this maybe but once every 10 years but it was worth the cost to install the new grease caps with ease. Made it so easy that I wish I had more trailers to install new grease caps on.

A year later and the grease caps have not popped off and I still dont have a new boat and trailer to have to replace the grease caps on. Still worth the money for the tool. So easy to use and no hammer dents in the grease caps when installation is completed. Thanks etrailer for great ion of items and always a great customer experience.
BarleyPop - 11/20/2019


Having the right tool for the right job is the difference between a quick, easy task, or something you wish you never started. This tool is a must for replacing grease caps. If you mangle a grease cap by tapping it you won't get a good seal on the press fit and bearing grease will end up where you don't want it. This is the best $10 investment you'll make for working on axle hubs.

Tool worked as designed.
Mark D - 03/25/2015


I received the Dust Cap Driver Tool today and immediately set about installing the dust caps on my '07 Ford Focus's rear hubs. Had it not been for this tool, I do not think I would have been able to install them.


The tool was just what I needed to install the new grease cap..

RAB - 08/13/2021


Very satisfied, great tool


I highly recommend this tools (Very helpful.) as well as replacing the caps each time. (Caps are cheap at $xx.xx, so why not?) This tool fits the cap snugly and helps you
1) Drive the cap straight into the hub.
2) Keeps them from warping, it surrounds the cap and pushes mid cap on the crimped part.
3) Hammers them in by the crimped edge not the cap edge facing out.
You know how it goes, get the right tool for the job or have headaches.

Good luck with your project!

Great tool, still working great!
Bradd B - 01/19/2021


Works like champ!

Have not used again but still in my toolbox waiting to be used again
Mark - 12/05/2021


This Dust Cap Driver Tool is my far the best tool that I have ever purchased hands down.


If I had bought this at a brick & mortar store, I would have left the one I received on the shelf and picked a straighter one. These are a handle welded to a heavy metal cup--one would think they would have used a jig to weld it straight, but apparently they just eyeballed it. So, because the handle is not on straight the transfer of force will not be even--but it's not so bad that it won't work. Unfortunately, it's not bad enough to send back--so I feel like I'm stuck with it. I'm guessing they were made in China and the quality inspector called in sick the day mine was made. (Ha, ha, like they even have a quality inspector.)

Its still not welded together straight.
Dave P - 08/25/2015


I bought all three sizes. I service a fleet of pickup trailers in the oilfields and after so many hubcaps, you'll look for something to do the job better. Reinstalling an old cap isnt too bad most of the time, new ones are where these tools shine. The majority of new hubcaps will not install easy, without some good heavy persuasion. And its just a sad sight, a bent, bruisied and beat up brand new hubcap. But this tool will make you proud.

I've noticed hammering on hubcaps can lead to them actually falling off down the road (pun). And the other issue is with the cotter pin inside. If the cap is dented badly, it will rub on the cotter pin or grease zerk, if it didn't already break off. Its not easy to cause this but it is possible.
Breakdown of why I bought these:
50% getting so incredibly annoyed that the cap just won't go on and being tempted to use a BFH. 30% because a newly overhauled trailer looked like h-edouble hockey sticks when I got done with it. 20% noticing hammered caps seem to fall off easier, later.

These are extremely well made thus far. I was surprised how nice and heavy they were, no quality skimping here. The cup end is made of a perfect thickness, you could toss this thing around no worries. The shaft is solid or at least thickwalled judging by the weight. And the end is a separate rounded off piece just waiting for the hammer time.

Note, the length I'm not sure on yet. The end sticks out just above the hand when grasping tool. Maybe nice to be an inch longer? Not sure yet.
Other thing I noticed is how close fitting this is. Not a con, but just keep in mind its not gonna be good for installing old beat up caps.

For removing hub caps look into SnapOns GCP10 pliers. Together, these tools are the perfect pair.


This is a tricky tool to purchase and use for anything other than a standard trailer hub dust cap. It seems I did not research this one enough, as I got so excited to see what appeared to be a tool made to install Bearing Buddy/protector style caps which have an internal zirk and spring loaded discs to keep grease pressure. Problem is that only the EZ Lube brand versions will actually work with this tool, and have the same inside and outside diameters to allow that. Bearing Buddy's, Red Eye's, Reese, and a bunch of others like I normally use, have a larger outside diameter of around 2.15". The next tool size up has a diameter of around 2.45", so that is not a close enough fit to use for both installation and removal. I sent this one back, and will continue to use my piece of 2X4!


I can believe that I waited this long to buy one of these. No more tapping the edges with a hammer trying to get the dust cap started and hoping that you seat it evenly. This tool is worth its weight in gold. When I first considered purchasing it, I hesitated thinking "how many times am I going to actually use this tool?". Now that I have used it, even if I only use it 1X every year when I check my brakes it is worth every penny. Unfortunately it is one of those tools that you will never know how great it is until you use it.
Don't delay, if you have to install and remove dust caps you will be glad that you have this tool in your box.


There’s a reason why I always go to etrailer first for anything trailer, boat, truck related. They carry the best stuff and follow through after the sale is complete to make sure I’m satisfied.

Great. No problems
Joe - 04/26/2019


I ordered the dust cap driver tool because I just could not get the dust caps on my hubs for my boat trailer, it was driving me crazy. I looked on the internet and it said to use a driver tool. I found the etrailer site on my computer and they had the driver I needed. So I ordered one, it arrived in 4 days. When I opened the package the tool was very well made, and the price was very good. I went to the trailer and it took about 30 seconds to put on the dust caps, I could not believe how easy it was to put them on thanks to etrailer .



EZ lube bearing,race and seal set were as advertised and fit my dexter hubs perfectly with no problems. Also purchased the Dust covers with rubber stopper and the Dust cover driver tool. Saw an earlier review with one star but bought anyway and it worked perfect. Other review stated it was not welded square but must have been a fluke because the one I received was in perfect shape and worked great would buy again and made the install super easy without denting or messing up the cover.


Received product quickly. It worked very well installing new wheel bearing dust caps. Dust covers fit inside tool nicely, and it's easy to keep the cap properly centered in hub while driving the caps in.


I really like the fast shipping from etrailer. So far, I have ordered a spare tire and wheel, dust caps, the driver tool and a light. All of the items are excellent. etrailer really saves me a lot of time and I have my order in just a few days. Thanks, etrailer.

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