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  1. Trailer Bearings Races Seals Caps
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  6. 6000 lbs Axle
Kodiak XL ProLube Oil Bath Hub Body and Cap - 2.440"
Kodiak

Kodiak XL ProLube Oil Bath Hub Body and Cap - 2.440"

Part Number: XLPROLUBE2440
In Stock
$29.80
Retail:$31.38
You Save: 5%
Trailer Bearings Races Seals Caps
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Replaces (1) 2.440" body and cap for Kodiak XL ProLube oil bath hubs. Seals sold separately. Great Prices for the best trailer bearings races seals caps from Kodiak. Kodiak XL ProLube Oil Bath Hub Body and Cap - 2.440" part number XLPROLUBE2440 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (109)
  • Q & A (0)
  • Videos (2)
  • Photos

Kodiak Trailer Bearings Races Seals Caps - XLPROLUBE2440

  • Caps
  • Oil Cap
  • 5200 lbs Axle
  • 6000 lbs Axle
  • Kodiak
  • 2.44 Inch

Replaces (1) 2.440" body and cap for Kodiak XL ProLube oil bath hubs. Seals sold separately.


Features:

  • Replaces body and cap for Kodiak XL ProLube oil bath hubs
  • Clear blue polycarbonate cap
  • Fits 2.440" hubs
  • Includes 1 body and cap
    • Seals not included


021-XLPROLUBE2440 Kodiak XL Pro Lube Oil Bath Hub Body and Cap

Replaces XLPROLUBE2440





Video of Kodiak XL ProLube Oil Bath Hub Body and Cap - 2.440"
Video Thumbnail Video Player Dialog

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




Video Transcript for Kodiak XL ProLube Oil Bath Hub Body and Cap: The Breakdown

Hi there trailer runners! Today, we're gonna be taking a look at the XL Pro Lube oil bath adapter. This oil bath cap will allow you to take a traditional grease filled assembly and remove your cap on there, install this new one that gives you a fill point for your oil bath and all the necessary markings that you need on here to know how full that you need to make it. Now, when you're installing this if you are doing a conversion from a grease setup to oil you would wanna make sure that you also replace the seal on the inside. And that seal needs to be an oil bath seal instead of just a regular typical grease seal. There are differences between the two and it's important that you have the appropriate one to prevent the oil from leaking out. You can also get these in a kit.

If you're wanting to do a conversion you can get the outer cap here as well as the inner seal for an entire axle, and you'll also get the lubricant included with the kit so you can fill up the axle. If you're working on a tandem like we are just make sure you grab two kits so you can do the conversion for both. The cap here is a 2.440 inch inner diameter, and that's the, what it's gonna fit inside of here on your hub. So as long as you've got that same dimension here this cap should drive right in. I was gonna also mention if you are putting on one of these caps here you might notice that there is a chrome center cap that's typically in place on these kind of center caps there.

With the Pro Lube caps installed, they extend out a little bit further than your traditional grease cap. And I actually had to pop that center cap out of there. We're not gonna be able to reinstall that center cap due to clearance issues, but you will be able to still use the main part of the center cap just not the actual little tiny center cap. And it actually doesn't look too bad once you get it on here, it can, you can actually see your oil level right away. So it works out pretty nicely with this particular wheel.

But if you do have a similar wheel like this, just note that you will have to remove that center chrome cap. And that completes our look at XL Pro Lube's oil bath adapter..

Customer Satisfaction Score:

Ratings & Reviews

4.4

109 reviews
5 Stars
(77)
4 Stars
(16)
3 Stars
(7)
2 Stars
(4)
1 Star
(5)
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by:
very fast shipping
by:
Hi Andy thank you for all the help e trailer provided with the items that we were looking for everyone was professional and great customer service thanks again Andy.
Ramon profile picture

Ramon

4/4/2026

excellent no issues thank you for having the parts and great customer service.

by:
My review is of Kodiak. (Etrailer provided excellent customer service and responded quickly to my questions.) Kodiak has decided not to sale the caps separately anymore. I've never had a problem with the main bodies failing with removal, which you have to do to adjust the wheel bearings. This adds and unnecessary expense. If Kodiak is not going to make the caps available separately, I will look for another option.
Kate F. profile picture
Etrailer Expert

Kate F.

11/13/2026

We really appreciate the kind words about our customer service. I'm sorry Kodiak's decision to no longer offer the replacement caps has been so frustrating. I can certainly understand not wanting to replace the entire unit when you only need a cap. I wish there were more I could do.

by:
I had to buy two more caps to replace the two year old ones that cracked and leaked while the trailer sat in my backyard. A better aluminum design from Fortress are not available for my popular size. To make things worse, ProLube only sells the replacement caps bundled with new aluminum bases which triples the price. Bad design.
by:
I installed Kodiak wet hubs on my fifth wheel about 3 years ago. At least once a year, one of the polycarbonate caps cracks within the threads and produces a slow leak of oil. I made my own aluminum wrench for the caps and don't tighten them down much more than wrist tight (about 15 FT LB) so it must be inherent with these polycarbonate caps. Anyways ... etrailer sent me what I needed with fast shipping.
by:
I purchased this as a way to easily access my Bearing lube axles, and still be waterproof (it's a boat trailer) build quality is very nice, however it is allumminum and It got marred up when I installed, so I just went back to the original caps.
by:
Put these on our 5th wheel travel trailer several years ago. Easy to install and never have to repack wheel bearings. Just check the oil level and go. Only issue we've had was when the tire people cracked the plastic cap while installing new tires. I will definitely put these on future trailers.
by:
These are great. No more grease seals blowing grease all over my disc brakes. Took a 2500 mile trip, worked perfectly.
by:
Needed these caps quick as my originals had cracked. Shipping over night is always expensive but etrailer came through and got me my parts and saved the fishing trip
by:
There parts arrived on time and fit my boat trailer perfectly.
by:
Don't know if it was these being too big or your hubs being to small. Extremely tight fit. Did get them halfway seated and had a tough time from there. Most likely will have to destroy them when I have to remove them
by:
The oil bath hubs along with the disc brake kit are the best upgrades I’ve made to my living quarters horse trailer. No more hassles with keeping the hubs properly lubricated.
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They are the right parts I ordered, but they took a long time to arrive. Other than that, no problems.
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Great product. I’ve been using them for more then 10 years.
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Show More Reviews

See what our Experts say about this Kodiak Trailer Bearings Races Seals Caps

  • Converting Hubs From Grease To Oil Bath On 2014 Outback 298RE Travel Trailer
    Hey Perry, thanks for reaching out. We certainly should have the parts you need for an oil bath conversion, but I will need to collect a bit more info on your axle in order to be sure you get the right parts. First I will need to know the weight capacity of each axle. That will help a lot to narrow down the right parts. I will also need to know the bearing sizes and seal size for your hub. You will need to get brand new bearings since you are switching over to oil. The best way to determine...
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  • Options For Replacing A Tie Down Turbo Lube 48394 Clear Oil Bath Cap
    Though we do have the Bearing Buddy # BB2441T-SS that is a direct replacement for Tie Down's Turbo Lube oil baths, this will require you changing over to grease instead of oil. With that said, we do also have the Kodiak XL ProLube Kit # XLPROLUBE2440KIT (or # XLPROLUBE2440 as a single cap) that will measure the same, but the end that sits in the hub is not threaded. To get this to fit, you would either need to have the ends of the caps threaded, or have the threads turned down on your...
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  • Parts Needed To Swap From Grease To Oil Bath For 7K Axles
    To swap over to oil bath you can just swap out the bearings, grease seal, and caps but I'll need a bit more info in order to determine the correct fit for your setup. If you don't need to trailer for a bit you can remove one of the hubs and check the face of the outer bearing for the part number. You can then look at the grease seal for it's part number and pop it out to check the inner bearing. Once we have these part numbers we can determine the correct replacements. If the part numbers...
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    Image 1 for
  • Recommended Synthetic Bearing Lubricant for Kodiak Oil Bath Hubs
    In your oil bath-type hubs you will want to use any 80- or 90-weight synthetic gear oil. My contact at Kodiak confirmed that the brand of oil is not important but that use of a synthetic oil in this viscosity range is what matters. As it happens though, the brand of synthetic 90-weight bearing oil we offer is Kodiak, part # XLPROLUBE.
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  • How to Determine the Correct Oil Bath Cap
    To figure out the correct oil bath cap, you will need to know your axle's capacity or size of your hub bore. For a 3,500 lb hub or 1.98" hub bore you would use Kodiak XL ProLube Oil Bath Hub Body and Cap # XLPROLUBE1980, or for the kit you would use # XLPROLUBE1980KIT. If your axle had a capacity of 5,200 lbs or 6,000 lbs, or 2.44" hub bore you would want Kodiak XL ProLube Oil Bath Hub Body and Cap # XLPROLUBE2440 or if you wanted the kit you would use # XLPROLUBE2440KIT. I've added links...
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  • Availability Of Oil Bath Hubs For Boat Trailer With 7000lb Axles
    There are a few options for oil bath hubs for a boat trailer with 7000lb axles though I will start with saying that oil bath hubs are not recommend for a boat trailer due to the oil braking down very fast when water is introduced unlike grease. The first is a disc brake option which is the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Dacromet and Stainless - 7,000 lbs # K2HR712DS. This system includes races but you will need inner bearing # 25580 and outer bearing # 14125A. Now...
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  • Can Kodiak Oil Bath Body be Reused
    You are right that the Kodiak XL ProLube Oil Bath Hub Body and Cap - 2.440" # XLPROLUBE2440 will be damaged when removed, and is not meant to be reused. It acts as part of the hub, essentially, so if you remove it you will need to replace it as well.
    view full answer...
  • Parts Needed To Change Trailer Hubs From Grease To Oil Bath
    In order to be able to change your hubs from using grease to an oil bath you need a couple items. For the hubs you said have an inner diameter of 2.44 I recommend the Kodiak XL ProLube Oil Bath Hub Body and Cap, part # XLPROLUBE2440. This has the hub body that fits in your hub and a cap with threads. You will also need the Unitized Oil Seal, part # 10-63 for your hubs. This is a dual action seal. The inner part of the seal stays fixed in place on the spindle and the outer part turns...
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  • Which Oil Bath Cap Do I Need on a 2003 EZ Loader Trailer
    In order to determine the correct oil bath cap you'll need to measure your hub bore or find the weight capacity of your axle. If you have a 3500 lbs. axle or a 1.98 inch hub bore you will want part # XLPROLUBE1980 or # XLPROLUBE1980KIT for a kit that includes caps, seals, and oil. For 5200 or 6000 lbs. axles that have a hub bore of 2.440 inches you will need # XLPROLUBE2440 or # XLPROLUBE2440KIT for the kit.
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  • Suspension and Disc Brake Upgrade for Grand Design Momentum 398M
    I have some great options for you to upgrade the Grand Design Momentum 398M such as the Roadmaster Comfort Ride Leaf Spring Suspension Kit part # RM-2460-2570-3 which will help drastically increase ride quality/performance and the HydraStar Disc Brake Kit w/ Actuator for Triple Axle Trailers part # HSE7K-TR1 which will increase stopping power. They can be converted to oil bath with the Kodiak XL ProLube Oil Bath Hub Body and Cap part # XLPROLUBE2440 and Oil Seal part # 9103309. Unfortunately,...
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  • Threaded Cap Thread Dimensions For Kodiak XL ProLube Kit 2.440 # XLPROLUBE2440KIT
    The Kodiak XL ProLube Kit # XLPROLUBE2440KIT has a cap with the threads being 2-3/8" diameter and 12 threads per inch. We do carry the Kodiak XL ProLube Oil Bath Hub Body and Cap # XLPROLUBE2440 and Replacement Center Plug # XLPROLUBE-PLUG separately from the main kit. They do not sell the caps individually.
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  • Parts Needed To Convert a Triple Axle Toy Hauler With 5,080LB Axles To Disc Brakes 6 on 5-1/2 Bolt
    While we do not have a specific kit for your triple axle toy hauler with the 5,080lb axles we do have all the parts you will need. You will need to verify the bearing and grease seal sizes used on your axle to ensure I have all the correct parts listed below. You should have a grease seal with ID of 2.25", inner bearing ID of 1.75" and outer bearing ID of 1.25". Please let me know if you have something different otherwise here is a list of all the parts you will need. Kodiak Disc Brakes...
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  • Recommended Solution to Protect Bearings From Water on Boat Trailer
    The Kodiak # XLPROLUBE2440 is designed to replace the body and cap for a Kodiak XL ProLube oil bath hub. Since you are using grease and have a Dexter axle, it sounds like you have an EZ Lube axle with a zerk fitting for adding grease and a grease cap plug on the end. Assuming that is the case, you do not want to use the # XLPROLUBE2440. Instead, I recommend adding Bearing Buddy Bearing Protectors like the # BB2441SS or the threaded # BB2441T-SS. These are specifically designed for marine...
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Do you have a question about this Trailer Bearings Races Seals Cap?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Laura H
Written by:
Laura H
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Schuyler H
Video by:
Schuyler H

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