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Grease Cap Plug for E-Z Lube Grease Caps - Qty 2
TruRyde

Grease Cap Plug for E-Z Lube Grease Caps - Qty 2

Part Number: RG04-010
In Stock
$5.15
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TruRyde Accessories and Parts - RG04-010

  • Trailer Bearings Races Seals Caps
  • Plugs
  • TruRyde


Replacement Trailer Grease Cap Plugs for E-Z Lube Grease Caps
  • Rubber lube plugs for 1.18" dust cap hole
  • Quantity: 2

RG04-010 TruRyde Rubber Lube Plugs for 1.18" Lubed Dust Cap Hole



RG04-010 Grease Cap Plug for E-Z Lube Grease Caps - Qty 2

Similar to DX89HR





Video of Grease Cap Plug for E-Z Lube Grease Caps - Qty 2
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of the Grease Cap Plug for E-Z Lube Grease Caps

Hey everybody, Ryan here at etrailer. Today we're gonna be checking out the true ride plugs for EZ Lube grease caps. So right off the bat you're probably wondering are these actually gonna fit my trailer And as long as you have the EZ Lube grease caps chances are really good they will. There are a bunch of different manufacturers that make these caps but generally speaking they're all gonna have the same size opening there. So if you pop this one out, like I said majority of them are gonna be the same. So 1.18 size opening.

So if you're unsure, you can measure that and figure that out really. And the whole point of the cap, you know the grease cap and this plug, is allow to you to pop that out like I just did. Get your grease gun in there and lube up all of your parts inside of there with ease. And then, you know, obviously you don't wanna leave that exposed. So the cap will pop back into place.

And these things are really tight too. So I feel like they do a decent job of keeping everything sealed up. To me this is just one of these small parts. It's just good to keep, you know, replaced every now and again. What happens over time They just wear out, you know what I mean They get sun faded, kind of start to dry rot.

You know, if you're in and out of the water with em, and this is a good example of one that's several years old. It's started to dry rot, try to push it in place, and the center of it just pushed through. So, you know, if you're cap and everything's still in good shape, you can get away with just get the the replacement plugs like this one here that way put it in, keep everything sealed. And that way, you know, you don't end up chewing your bearings up, getting dirt and everything else inside of there. And I was replacing one, I would probably just replace 'em all.

You know, it's one of those small things to just, just knock 'em all out. Like that's just me. And I mean, you know, the type of stuff happens. Like I said, they just wear out, you grease 'em forget to put 'em back in. Whatever the case may be at the very least, there's an option available that you can grab these and get fixed back up. The plug does feel like it's made from some type of rubber, pretty thick. Like I said, I feel like it should hold up for quite some time. That one I just had was super old. So I got a lot of life out of it. But other than that though, I mean, at the end of the day you know, that's really about it. Regardless if you need these, or let's say, even if you're looking for the whole whole deal, you need the cap as well. Tons of different options available here at etrailer. So regardless on the small ins and outs that you need, we should be able to get you covered. And that'll finish up our look at of the true ride plugs for the EZ Lube grease caps..

Customer Satisfaction Score:

Ratings & Reviews

4.8

1492 reviews
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by:

fit the existing hub very well



by:

Worked well as replacement to lost ones on a 2023 Grand Design Momentum 395MS



by:

Good fit. Haven’t put any miles on them yet.



by:

Fit perfectly and seemed to be a heavier quality rubber than the originals



by:

Items were an exact fit. Shipping was on time. Overall a great experience, once again, as a repeat customer.



by:

Perfect replacements.



by:

Exactly what I needed quick shipping . I always get great service.



by:

Quality, good service and delivery, parts fit good.



by:

Shipped fast, parts fit



by:

Service was great and timely. Wasn't sure if I ordered the right size but it fit perfectly. Will use etrailer again if needed. Thanks



by:

Perfect fit for my Dexter EZ Lube 3500# axle hubs.



by:

Replaced poorly maintained bearings and hubs on a recently acquired boat trailer. The factory spindles were salvageable. Ordered replacement grease caps and seals. Shipping was quick, exact match for the grease caps on the trailer. Installed easy and packed with grease.

Victoria H. profile picture

Victoria H.

3/19/2025

Seems like the upgrade went pretty seamlessly for you, Mark! Do you have any boating trips planned for this spring?

Mark profile picture

Mark

3/19/2025

@VictoriaH The trailer mates with a Zodiac RHIB, a restoration project that once completed will be donated to a non-profit sailing program. This 15ft Zodiac is a great coach/ chase boat with its 9 man capacity.


by:

Grease caps fit and worked perfectly on my Diaomnond C 7000 lb axles. No leaks a year later.



by:

Perfect fit. Does what it is supposed to do. I put these on a 1988 Bass Tracker boat trailer.



by:

good less expensive alternative



by:

Unfortunately I ordered the wrong size. Too small. I will give a review later after I figure out the right size. Thanks for reaching out.



by:

Arrived timely as described and fits my need. Thanks!



by:

These are the caps that get removed to pump grease into an Ultra-lube hub. Perfect fit on my trailer with AL-KO 8490 axles and 10x2.25 brakes. Very nice price for a product that can be hard to find locally.
I can't prove it, but my research suggests these cross reference to:
+ 85-10
+ AL KO #568067
+ Hayes #09213611
+ TruRyde RG01-010
+ Dexter 085-001-00



by:

fast shipping, quality material, I would buy again



by:

Excellent product. Fit perfectly. I needed these to replace some older dry rotting ones. Would recommend and will purchase again when needed.

Darin profile picture

Darin

7/21/2026

Still working great and look as good as the day I bought them.



by:

Shipping took a little longer than expected. Otherwise service was excellent.



by:

I tried this product for an aviation application. I own a DHC-2 Beaver aircraft that has a tail wheel axle that is 1.125 inch ID. I wanted an end cap that was removable because the axle tube is used to steer the aircraft with a hand held bar during some ground movement. So far the rubber cap seems to work. It has remained on during several flights. It is easy to remove and insert. The only problem may occur if the cap mounting area of the axle become oily or greasy which may allow the cap to slip off. It seems to need a friction fit to stay on.

Jim C. profile picture

Jim C.

6/30/2015

Same as described above.



by:

Fast shipping and the right part



by:

Great grease cap plugs!

Daniel N. profile picture

Daniel N.

5/6/2025

The product seems to be pretty good. After one year of use, they have worn out. Not sure if it’s due to heat during summer months or the material and how they are manufactured.



by:

I purchased these along with a complete bearing kit, to replace the ones that came originally on my trailer. There was nothing wrong with the original ones but rubber being rubber I thought it would be a good idea. Wrong. I lost one almost immediately (just the 3rd time I took the trailer out). Luckily I didn't lose much grease so the bearings shouldn't need replacing.


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See what our Experts say about this TruRyde Accessories and Parts

  • Replacement Grease Cap Plug for EZ Lube Grease Cap
    Hey Rick, Thanks for your question. The Grease Cap Plug for Dexter Axle E-Z Lube Grease Caps - Qty. 2 # DX89HR is the correct replacement for your torn rubber plug. Since it's a Dexter-branded part, it's a great choice if you're looking to keep everything OEM. If brand isn't a concern, the Grease Cap Plug for E-Z Lube Grease Caps - Qty. 2 # RG04-010 is also a compatible replacement. Both of these rubber plugs measure 1.18 inches in diameter, which is the standard opening size for E-Z...
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  • How to Measure a Trailer Hub for the Correct Size Grease Cap
    You would need to measure the inside diameter of the hub opening to determine which cap size is needed. You would want to choose a cap whose outside diameter matches the inside diameter of the hub. Some of the most common sizes are 1.980 inch, 1.986 inch, 2.441 inch and 2.717 inch. As you can see the sizes can differ by very small amounts. To measure accurately you may want to get a dial caliper so that you can be confident you are getting the correct size for your hub. I have included...
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  • What Threaded Grease Cap will Fit My 2 1/16" Treaded Bore, Switching from Oil to Grease
    Hello Jim, Since your hub is measuring 2 1/16", I recommend using the Bearing Buddy Bearing Protectors - Model 2080T-SS - Threaded - Stainless Steel (Pair) # BB2080T-SS. It is a great maintenance free option. Don't forget some LubriMatic Prime Guard High Temperature Wheel Bearing Grease - Red - 16-oz Can # L11380 to complete the swap. What kind of trailer is this going on?
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  • What EZ Lube Grease Cap Cover do I Need for My 2021 Cougar 290 RLS with 6,000 Pound Axles?
    Hello Johnny, I really wish I had a list that told me everything that was put on every camper, but unfortunately such a list does not exist. You were looking at the Snap-In Plug for Lionshead Trailer Wheel Center Caps - Chrome # LHSI60C, which is the piece that goes on the wheel center cap. If your plug measures 2", then the # LHSI60C will fit perfectly. Please refer to the attached image for reference. If you’re instead looking for the rubber plug that fits into the grease cap on the...
    view full answer...
  • Are Different Sizes For The E-Z Lube Grease Cap Plug Available?
    The 1.18" width on the Grease Cap Plug for E-Z Lube Grease Caps # RG04-010 is the only size that is offered.
    view full answer...
    Image 1 for
  • Replacement Grease Caps for a Trailer Hub with 2-1/16 Inch Hub Bore
    Instead of measuring the grease cap, measure the hub bore where the grease cap fits. You will need the most accurate measurement as possible so use dial calipers. You may find that you have a 2.047 inch bore so you could use bearing protectors like # BB2047SS. Or it could slightly larger, 2.080 like # BB2080. These are the 2 most likely sizes if you are coming up with 2-1/16 inches but measuring the hub bore with dial calipers would be the way to go.
    view full answer...
  • Replacement Grease Cap Plug for a Tracker Boat Trailer
    To determine which grease cap plug fits the caps on your trailer you will need to measure the opening in the cap. The best way to measure is to use digital calipers such as # PTW80157. Replacement plugs # RG04-010 fit a 1.18 inch opening. That is just under 1-3/16 inches.
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  • EZ Lube Grease Cap Recommendation for Part Number 021-042-01
    The grease cap you need is part # 21-42-1. The rubber plug that you would then need is the part # RG04-010. We are going to need to know the width of your current grease cap on the other trailer to pick out a Bearing Buddy. Or you can measure the inner diameter of the hub bore where the cap sits.
    view full answer...
    Image 1 for
  • Replacement Bearings, Seals, and Grease Caps for 3.5K Dexter Torsion Axles
    The correct Bearing Kit for your Dexter 3,500 lb torsion axles is for the # 84 spindle. This can be found on our site as part # BK2-100. It comes with the Outer Bearing # L44649, Inner Bearing # L68149, and Grease Seal # 58846, as well as the appropriate races. For replacement EZ Lube Grease Caps you will need part # 21-41-1, and if you need the replacement plugs they will be part # RG04-010.
    view full answer...
  • Replacement Grease Cap Rubber Insert For EZ Lube Grease Caps
    The Grease Cap Plug for E-Z Lube Grease Caps # RG04-010 will replace your missing rubber cap on your Dexter E-Z lube axle hub.
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  • Replacement Rubber Caps For Dexter E-Z Lube Hubs
    The replacement rubber caps for EZ Lube hubs are # RG04-010. These are the lube plugs for 1.18 inch dust cap holes in those EZ Lube Grease Caps. These are the equivalent of the 85-1. If you need a different size dust cap, we only have what comes with the complete grease cap. We have Grease Cap, 1.99" OD EZ Lube Drive in with Plug - Qty 2 # RG04-040, 2-1/2" Lubed Dust Cap and Rubber Plug - 2.45" x 1.52" x 1.18" - Qty 1 # DC250L-DCRP.
    view full answer...
  • How Does an EZ-Lube Axle Work
    On an EZ-Lube axle, the grease gets inserted at the end of the spindle through a zerk fitting and comes out of a hole that should be in between the bearings, filling them both. You would not be able to use Bearing Buddies because the zerk fitting at the end of an EZ Lube axle would interfere with the installation.
    view full answer...
  • Replacement Grease Cap Plug for 6,000 lb Dexter Hub
    A 6,000 lb Dexter hub uses the grease cap of the RG04-120 so for a replacement cap plug you'd need the # RG04-010.
    view full answer...
  • What is the Size of the Rubber Plug in the End of the Dexter EZ Lube Grease Caps
    The Grease Cap Plug for the E-Z Lube Grease Caps, # RG04-010, has a measurement of 1.18 inches. I checked a few other references and could not find any measurement other than the 1.18 inches for the size of the rubber plugs.
    view full answer...
  • Replacement Rubber Plug for EZ-Lube Grease Cap on Tow Dolly
    The only rubber dust covers we offer for EZ Lube grease caps are # RG04-010, which are designed to fit a 1.18 inch diameter hole in the grease cap to allow access to the grease zerk without removing the cap. Your best bet would be to simply replace your existing grease caps. If the outer bearing is # L44643 or # L44649, use the # RG04-040 grease cap with removable plug. This is compatible with most 2000-3500 lb capacity hubs which is typical of what's found on most tow dollies. To be...
    view full answer...
  • Should Center Plug of Grease Cap Plug E-Z Lube Grease Caps # RG04-010 be Pushed Out All the Time
    The center portion of the Grease Cap Plug for E-Z Lube Grease Caps # RG04-010 is designed to allow the grease to expand slightly when warm and not pop the cap off. If you are seeing it pop out when cold you may have too much grease in the hub. I'd probably take the cap off to inspect.
    view full answer...
    Image 1 for
  • Replacement Grease Cap Plugs For Super Lube Axles On a 2003 Trailstar Boat Trailer
    The Grease Cap Plug # DC-RP used on axles is generally one common size. This plug is designed to fit a grease cap with a 1.18" diameter opening. We also have them available as a Set # RG04-010 for one axle.
    view full answer...
  • Can E-Z Lube Cap be Installed on Standard Trailer Hubs
    Replacing the standard grease caps on your existing hubs with E-Z Lube caps will allow you to easily access the grease fittings on the E-Z Lube spindles for your new axle. The Replacement EZ Lube Drive-In Grease Cap # 21-41-1 that you referenced is the correct part for your 3,500 pound hubs. You will also need to add the Grease Cap Plug # RG04-010 to protect the hub and bearings. This is everything you will need, as the cap and plug is the only real difference between an E-Z Lube and standard...
    view full answer...
  • Troubleshooting Bulging Center Plug of Trailer Hub
    Is that a rubber center plug that's popping out? Normally the plugs are black but that looks like the shape of one more or less. I think it's definitely time to remove the cap and hub and inspect everything/repack the bearings etc. What we see in that picure isn't a normal indicator of a problem but it's odd enough to warrant checking everything out. I attached a video on inspecting bearings for you to check out as well.
    view full answer...
  • Dimensions of Replacement Rubber Grease or Oil Cap Plug
    The Rubber Lube Plug - Fits 1.18" Lubed Dust Cap # DC-RP is the replacement for the # RG04-040 grease cap as well as larger caps like the 2.44" OD Drive In Grease Cap with Plug # RG04-080. The Grease Cap Plug fro E-Z Lube Grease Caps is the same size and is part # RG04-010. We have the Dexter Oil Cap plug with is much smaller at 0.55 inch diameter and the other Dexter oil cap plug that is bigger # 46-32 which is 0.88 inch diameter. The Replacement Center Plug for Kodiak XLProLube Oil...
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  • Replacement Rubber Plug for Dexter EZ Lube Grease Cap with 1-3/16 Diameter Hole
    Yes, the the pair of grease cap plugs # RG04-010 is the correct replacement for your EZ-Lube Dexter axle. From what I was able to find, the 1-3/16 or 1.18 inch is the standard size hole used for the rubber plugs on all EZ-Lube grease caps. It's also available individually as part # DC-RP.
    view full answer...
  • Is TruRyde Grease Cap Plug Correct Part?
    The Grease Cap Plug for E-Z Lube Grease Caps # RG04-010 is the correct replacement grease cap for your Dexter 85-1 plug; both are plugs for 1.18" hole. I've left a link to a video review of this product for you to take a look at.
    view full answer...
  • How To Find Correct Replacement Rubber Plug for E-Z Lube Axle
    The rubber plug insert for E-Z Lube Axles is relatively standardized. That said, I'm not sure if they are all the same but if you measure the hole and get 1.18" then you'll use the Grease Cap Plug for E-Z Lube Grease Caps part # RG04-010.
    view full answer...
  • Will Grease Cap Plug Part RG04-010 Fit Tie Down Engineering SuperLube Grease Caps
    We do not carry the Tie Down Engineering hubs and caps, so I could not check for sure if they would fit the Tie Down Super Lube grease caps. I did get the measurements for the plugs and they will fit a 1-1/4 inch opening on a grease cap. If the opening for your SuperLube caps is 1-1/4 inch in diameter, then these plugs will fit fine.
    view full answer...


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