Unitized Oil Seal
(60 reviews)
Price: $56.80
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- Reviews (60)
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Redline Trailer Bearings Races Seals Caps - 10-51
- Seals
- Oil Seals
- 3.880 Inch O.D.
- 2.875 Inch I.D.
- Redline
A unitized seal is a dual action seal. The inner part stays fixed on the spindle and the outer casing rotates with the hub. This type of seal has less wear and tear and provides better leak protection.
| 2.875 | 3.880 | Dexter 9K, 10K G.D. |
TCM OB2838051 is stamped on the air side of the seal.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Did not fit
Customer Reviews
Unitized Oil Seal - 10-51
Average Customer Rating: 4.7 out of 5 stars (60 Customer Reviews)
by: Paul 01/10/2024
I repair trailers, these seals work good every time
by: Travis02/19/2024
This isnt the right seal
by: Hector02/10/2024
Wrong seal
Jenny N.
2/16/2024
Oh, I am sorry that this seal is not a fit for you. It has an inner diameter of 2.875 inches and an outer diameter of 3.880 inches. It works with Dexter 9 and 10K axles. I recommend measuring both the inner and outer diameter of your original seal to find the one that will work for you. I will have our Customer Service team reach out to you.
by: Jason02/02/2024
Perfect fit. Thank you for the crossover information on an older part. Great experience
by: Vernon 08/26/2023
Good source for trailer parts and prompt shipping
by: Jeremiah09/13/2021
Being on the trailer repair business I replace a lot of axle seals - and a n alarming amount of failed ones. It doesn't pay to go cheap. These hub oil seals by Redline seem to be good quality and hold up well.
by: Jeff Bonifield03/25/2017
Great product and fast service. I will be back I have other trailers and I have told several or maybe even many people about you. Thank you so much These were mostly bearings and seals for a heavy trailer so I don't have any pictures. Take my word for it though with them
by: Michael H.03/18/2013
Product was exactly what I needed to get back on the road. The picture zoom assured me that the part that I was getting matched to old one exactly. The product also arrived in a timely manner. To top it all off the customer service, attention, and follow up have been second to none.
by: Martin 02/09/2023
Jamie B was out of her way helpful to get the right parts. She was very pleasant to work with.
by: Greg 02/13/2023
All the parts were just what we ordered.
by: Mike02/11/2023
Seals are in great shape. Exactly what I needed.
by: Jayden01/05/2023
Very fast and professional
by: Rick 10/10/2022
Quality Part
by: Derek Dennis06/02/2013
My old seals were discontinued, but they had the matching tables to the new ones which turned out to be a perfect match to the old. Did not have this luck at two other sites. Highly recommend this company as you get what you need the first time and you get it quick!
by: Tommy 09/15/2022
Quality products. I am happy with the p urchase
by: David 08/11/2022
Work as it should.
by: Reid10/05/2016
It was the correct part, good fit, good quality. So far so good.
by: Mike Birdwell09/01/2016
Worked and fit just like described, good deal.
by: B perry09/09/2017
Top quality products as well as service
by: Larry 07/22/2021
Good service and fast shipping!
by: Michael K01/28/2017
Great seal works great
by: Larry12/21/2016
just what we expected
by: Colin03/09/2022
These guys are great. Best service I have received. No reason to shop elsewhere.
by: Ernest 02/17/2024
by: Joe 02/12/2024
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See what our Experts say about this Redline Trailer Bearings Races Seals Caps
- Parts Needed To Covert Electric Drum Brakes On Triple Axle Texas Pride Car Hauler To Hydraulic Disc I was able to determine that your 9,000lb axles on your Texas Pride Trailer will accept the Dexter Axle Oil Hub # 008-430-03. It uses the same Outer Bearing # 25580, Inner Bearing # 387A and this will use the Oil Seal # 10-51 which is the same 2.875 inner diameter as your grease seal. You will need the Oil Cap Kit # RG04-270 for the new hubs. And the Kodiak Synthetic Bearing Oil # XLPROLUBE can be used with all manufactures. The Kodiak Disc Brake Kit # K2R1058D11E will provide you with...
view full answer... - Replacement Bearings and Seals for Dexter Axle 10K Axle with Oil BathI can give you a few different options but to know the exact bearings, races, and seals you need for an oil bath on your 10K Dexter Axle you will need to take some measurements on your spindle using a digital caliper or by finding the part numbers on these pieces. Attached is a photo to show you where the part numbers are located as well as where you will need to measure on your spindle. One set of common bearings/seals are inner bearing # 387A (2.250" inner diameter) with race # 382A,...
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- Replacement Oil Seal For Dexter 10,000 lb Hub From 2006 to Replace National 370150BGI'm not sure why they said those were your only options, but we do have the correct replacement oil seal for your Dexter 10k hub from 2006, and is the exact replacement for a National 370150BG: - Unitized Oil Seal # 10-51 The # 10-51 has an inner diameter of 2.875 inches and outer diameter of 3.880 inches; I verified with Dexter this is the correct part for your 10k hub.
view full answer... - Replacement Hub Options For a Dexter D1012 With Bearings 387A and 25580Here is your options for a Dexter D1012 with the Inner Bearing # 387A, Inner Race # 382A, Outer Bearing # 25580, and Outer Race # 25520. Idler Hub Prior July 2009 # 8-288-3UC1 Idler Hub After April 2013 # 008-430-03 Hub/Drum Prior July 2009 # K08-288-90 Hub/Drum After July 2009 # 8-430-5UC3 All but the Idler Hub After April 2013 # 008-430-03 include all the bearings and seals. For this you will have to also add the following components for each hub. Inner Bearing # 387A Inner Race #...
view full answer... - Orientation Of Grease Seal On Hub I have attached a photo of the inside of a hub you can check out. In the photo the arrow indicates how the seal is installed on the hub. As you can see the flat side of the seal is flush with the edge on the inside of the hub.
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- Bearing, Races, and Cap for 10,000 lb Dexter AxleThe bearings you need are # 387A and # 25580. Races needed are # 382A and # 25520. The oil cap kit you need is part # RG04-300. If you need a seal too you would need the part # 10-51.
view full answer... - Recommended Complete Disc Brake Conversion System For 10,000 lb Dexter AxlesTo replace your leaking seals, you will want the Unitized Oil Seal # 10-51. This is a confirmed fit for your hubs. I've attached a video of an oil seal installation on a similar hub to help. For your disc brake conversion, you will need to use the Dexter Trailer Hub Assembly - 9,000-10,000-lb Axles - 8 on 6-1/2 - Oil Bath # 8-288-3UC1 and then the Kodiak Disc Brake Kit - 11" Rotor - 8 on 6-1/2 - Raw Finish - Leaf Spring - 10,000-lb Dexter # K2R1058D11E compatible with these hub assemblies...
view full answer... - Does The Unitized Oil Seal # 10-51 Use A Gasket Sealer? The Unitized Oil Seal # 10-51 does not require any kind of gasket sealer when installing on your Dexter axle.
view full answer... - How To Convert Dexter Electric Drum Brakes to Hydraulic Disc Brakes on 10K Axle In order to convert a Dexter 10K Axle (Made After May 2013) from electric drum to hydraulic disc brakes you'll need the following: Kodiak Disc Brake Kit part # K2R1058D11E (1 per Axle) Dexter Oil Hub for 9K to 10K General Duty Axles part # 008-430-03 (2 per Axle) Inner Bearing part # 387A (2 per Axle) Outer Bearing part # 25580 (2 per Axle) Oil Seal part # 10-51 (2 per Axle) Replacement Oil Cap Kit part # RG04-300 (2 per Axle) Hydrastar Electric Over Hydraulic Actuator Kit part # HBA16-252-82...
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- Disc Brake Conversion Parts For 10,000 lb Dexter Axle Made Before 2009Thank you so much for that information, and we can get you everything you need to convert to a disc brake set up for your 10k Dexter axles. While there isn't a single kit, we do have all of the parts you need, and let's start with the brake kit itself: - Kodiak Disc Brakes - 11" Rotor - 8 on 6-1/2 - Raw Finish - Leaf Spring - 10K Dexter and Lippert # K2R1058D11 This kit is designed to fit your 10k Dexter axles from pre-2009, which is why the year is important, and has all the parts you...
view full answer... - Replacement Parts For Dexter 10,000LB Trailer Axle On 2019 PJ TrailerYour Dexter axle SN 125272197 came with the Dexter Electric Brake Kit # 23-450-451. It uses the following bearings and seals. Inner Bearing # 387A Outer Bearing # 25580 Inner Race # 382A Outer Race # 25520 Oil Seal # 10-51 Oil Cap # RG04-300
view full answer... - Availability of Spindle and Hubs for 10,000 lb Trailer AxleAs you may have noticed, the highest capacity spindle we carry is for a 7,000 lb axle, # TRU37FR. Your best bet is to source the spindles for a 10,000 lb axle through a local trailer shop or dealer. If are able to source the spindles, we do have hubs for 10,000 lb axles. I'll list them below: # 8-430-5UC3 - Dexter Hub Drum for 9K to 10K axles manufactured after July 2009 (for non ABS brakes) - uses inner bearing # 387A, outer bearing # 25580 and oil seal # 10-51 # K08-288-90 - Dexter...
view full answer... - RTV Sealant Recommendation for Oil Seal for Dexter AxlesThe Unitized Oil Seal # 10-51 would require that you apply RTV like part # LT37464 to the outer diameter of the seal before you install it per Dexter's seal installation instructions. This seal is designed as a replacement for Dexter 9K and 10K axles.
view full answer... - Recommended Replacement Oil Seal For A 2015 Big Tex 22GN TrailerFrom what I could find out, the Big Tex 22GN tandem axle trailers use 10,000 pound axles. However, this is the brand new ones so I highly recommend double checking this with Big Tex if you are unsure. They will need the VIN for your trailer, so have that near by. If they confirm this information or if you are already sure you have 10,000 pound axles, it does narrow the search down to 2 options. First is the # 10-51. This will have an inner diameter of 2.875" and an outer diameter of 3.880"....
view full answer... - Replacement Bearings and Seal for Dexter 10k Trailer HubThe bearings you need are # 387A for the inner bearing, # 25580 for the outer bearing, and for the seal # 10-51 since we know you have a 10k Dexter axle. For brake assemblies you'd need the part # 23-450 for the left hand side and part # 23-451 for the right hand side. For a hub you'd need # 8-430-5UC3.
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- Replacement Bearings and Brake Assemblies For 1998 Dexter 9000lb AxleThank you for the pictures and information of your axle! I called Dexter and your Dexter P12 SLR axle with Serial Number D-423-4057 has a 9000lb axle rating, and uses an 8 on 6-1/2 hub and drum assembly with 5/8" studs like you mentioned. For replacement bearings there is not a kit that has all of the bearings and races but you can purchase them all separately as follows: Inner Bearing # 387A Inner Race # 382A Outer Bearing # 25580 Outer Race # 25520 Oil Seal # 10-51 And Oil Cap Kit...
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- Trailer Hub Bearings and Seal for 2000 Top Notch Trailer with Dexter 10k AxlesThe bearings you need are # 387A for the inner bearing, # 25580 for the outer bearing, and for the seal # 10-51 since we know you have 10k Dexter axles on your 2000 Top Notch trailer.
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- Recommended Brakes, Bearings and Seals for Dexter 10k General Duty AxleI reached out to Dexter and found that your axle is a 10,000 lb general duty axle. The correct inner bearing and race is the # 387A and # 382A, the correct outer bearing and race is the # 25580 and # 25520. For a replacement seal you want the # 10-51. For electric brakes I recommend the Dexter Electric Trailer Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 10K # 23-438-439. These are self-adjusting brakes so there will be no need for manual adjustment. I have attached...
view full answer... - How to Pick Out Bearing for 10,000 lb Dexter AxleWe have the bearing part # 387A which is over 2 inches in inner diameter and is seen on 10,000 lb axles but I'd have to know exactly what your spindle dimensions are to know for sure what you'd need. If you can use a digital caliper like the # PTW80157 to get me the exact dimension of the spindle where the bearings and seal ride I'll be able to let you know which parts you need. A very common bearing combo for Dexter 10k axles is # 387A and # 25580. Races needed are # 382A and # 25520....
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- Determining Correct Oil Bath Seal For Dexter D100G 10000lb Axle Thank you for the picture! I reached out to my contact at Dexter and your axle is indeed a 10000lb axle, but with the axles age they were unable to confirm the oil seal or bearings used. With that said your axle being a general duty 10000lb axle should use the Oil seal # 10-51, but could use # 10-56. To determine the correct seal you will want to use digital calipers like # PTW80157 to precisely measure the spindle where the seal rides as shown in the included diagram, and the diameter...
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- Recommended Kodiak Disc Brake Kit for a Dexter 10K AxleThe disc brake kit I recommend for a Dexter 10,000 Lb Axle is the Kodiak Disc Brake Kit part # K2R1058D11E which will also require the Dexter Oil Hub for 9K to 10K General Duty Axles part # 008-430-03. Please note this setup is designed for axles made after May 2013 with leaf springs so if you have something different please just let me know. The manufacture's date code is listed on the axle tag in the center of the beam. If you don't want to reuse the old bearings/races and seals you'll...
view full answer... - Bearings, Races and Oil Seals For Dexter 10K Axle On a 2018 Big Tex 22GN TrailerWhen you replace your Brakes # 23-450-451 it is a good idea to inspect the bearings at that time. The bearings and races will only need to be replaced if they are damaged or grooved. A visual inspection of the seal will tell you if it leaking or you notice any damage to the seal. Depending on if your Dexter 10K axle is a general duty or heavy duty will decide the bearings and oil seal you will need. If you are unsure you can send me the axle serial number that is stamped in the rear portion...
view full answer... - Replacement Brakes, Drums, Hubs & Bearings For Dump Trailer With 10K Dexter Axles Manufactured 2006Thank you for the serial number as this allows me to confirm all the components installed when the axle was built. For a trailer with 2 of these axles you will need the following components to change out all the parts. The brakes are 12-1/4" x 3-3/8". Dexter Left Electric Brake # 23-450 Qty 2 Dexter Right Electric Brake # 23-451 Qty 2 Dexter Trailer Brake Drum # 9-44-1 Qty 4 We do have the Dexter Trailer Hub and Drum Assembly # K08-288-90 if you want to replace the entire hub as well...
view full answer... - Replacement Oil Seal and O-Ring for Dexter Drum Hub with Oil BathThe Dexter Trailer Hub and Drum Assembly - 9,000-lb to 10,000-lb - 8 on 6-1/2 - Oil Bath - Non-ABS Drum # 8-430-5UC3 does have replacement parts so you can absolutely purchase the seal and o-ring separately from the entire hub. The seal is the Unitized Oil Seal # 10-51 and the o-ring is # 92127. If you want the entire too the Replacement Oil Cap Kit for 9,000-lb and 10,000-lb Dexter Axle # RG04-300 consists of the cap, the plug, and the o-ring. If you need more oil, I recommend the Kodiak...
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Brooke M.
3/7/2024
It sounds like maybe the measurements werent quite right. If you look on the original seals if you still have them, there should be a number stamped on them. That will give you the seal size you need. If that number isnt there or has worn away, you can find the seal size by measuring the inner diameter and the outer diameter of the seal. Then from there you will find the correct seal size. Part # PTW80157 is super handy to have for this kind of measuring.