1. Trailer Bearings Races Seals Caps
  2. Bearing Buddy
  3. Caps
  4. Bearing Protector Grease Cap
  5. 2.047 Inch
Bearing Buddy Bearing Protectors - Model 2047SS - Stainless Steel (Pair)

Bearing Buddy Bearing Protectors - Model 2047SS - Stainless Steel (Pair)

Item # BB2047SS
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Trailer Bearings Races Seals Caps
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Bearing Buddy Caps - BB2047SS
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Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub. Lowest Prices for the best trailer bearings races seals caps from Bearing Buddy. Bearing Buddy Bearing Protectors - Model 2047SS - Stainless Steel (Pair) part number BB2047SS can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (120)
  • Q & A (41)
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Bearing Buddy Trailer Bearings Races Seals Caps - BB2047SS

  • Caps
  • Bearing Protector Grease Cap
  • 2.047 Inch
  • Bearing Buddy

Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub.


Features:

  • Replaces the grease cap in the axle hub
  • Prevents wheel-bearing failure
    • Keeps water and dirt out of hubs and bearings
    • Allows boat trailer wheels to be completely submerged
    • Stops corrosion and pitting on bearings
  • Provides easily accessible grease fitting
    • Makes adding grease to the bearings quick and simple
  • Maintains slight, controlled pressure (3 psi) with spring-loaded piston, preventing water from entering hub
  • Prevents overfilling and rear seal damage with automatic pressure-relief feature
    • Grease seeps around piston edges and into barrel when full
  • Constructed of stainless steel
    • Ensures longer-lasting fit than plastic or aluminum products
  • Includes rubber covers
  • Installs easily
  • Made in the USA


Specs:

  • Fits 2.047" hub bore
    • Works with various outer bearing models
    • Works with outer bearing cup (race) model 07204
  • Lifetime warranty


Bearing Buddy installed diagram

Bearing Buddy Operation

Replace your existing grease cap with a Bearing Buddy to ensure a safe, easy way to monitor and control the level of grease in your axle hub. To adjust the amount of grease in the hub, use a grease gun to add more through the appropriate fitting. Adding grease moves the Bearing Buddy spring-loaded piston outward 1/8".

The O-ring inside the barrel of the Bearing Buddy maintains a seal from the outside. The interior of the Bearing Buddy is pressurized, preventing water from entering the barrel and diluting the grease.

An automatic pressure-relief feature is built into the Bearing Buddy. When the device is full, grease will seep around the edges of the piston and into the barrel. This prevents overfilling that can damage the inner seal.

You can manually check the grease level in your Bearing Buddy by pressing on the edge of the piston. If you can rock or move the piston, the hub is properly filled.



42408 Bearing Buddy Model 2047SS - Stainless Steel (Pair)






Customer Reviews

Bearing Buddy Bearing Protectors - Model 2047SS - Stainless Steel (Pair) - BB2047SS

Average Customer Rating:  5.0 out of 5 stars   (120 Customer Reviews)

Great for marine applications; the stainless steel construction provides the best in corrosion resistance. The design makes Bearing Buddy an easy way to protect your bearings by keeping water out and ensuring enough grease is in the hub.

- BB2047SS
by:

The 2.047" is a perfect replacement for the 52mm [hardware store] dust cap. Nice, snug fit.



- BB2047SS
by:

Just installed on my folding freight harbor 1720Lb trailer (5.30 x 12 tire, 5 lug nuts), fast shipping, easy installation, quick and easy fill up with grease, just follow instructions.


Comments
working perfect, no problems
Lukasz - 11/18/2020


- BB2047SS
by:

Great addition to any trailer used in wet, sloppy conditions. Not just boat trailers. I added a pair to an ATV trailer that is used in very muddy terrain. Very easy to install, but care should be taken to be sure you select the correct size as there are a number of sizes that are very close together. I suggest removing the old grease cap and measuring the inside diameter with a caliper. Also the addition of bearing buddies makes checking the amount of grease and refilling your hubs much easier to do. The Stainless variety are a couple bucks more but worth every penny. Would Highly recommend to anyone.



- BB2047SS
by:

They verified for me that they will fit the bearings on my Detail DK2 Trailer, I have yet to install them, but they look correct! Thanks!



- BB2047SS
by:

Love the Bearing Buddies received from etrailer. We put them on a motorcycle trailer and they work awesome. Thanks etrailer for helping me order the correct parts!



- BB2047SS
by:

I have a harbor freight 4x8' folding trailer and I purchased these bearing buddies for longer trips. They work great keeping the axle bearings lubricated and pushing out the used grease as well. The installation was a bit difficult on one side, but this is due to the trailer itself. I was able to get it square and pressed in with a hammer and block of wood. The other side was a much easier install. Haven't lost the end caps yet either, after a few hundred miles of use!



- BB2047SS
by:

These bearing buddy bearing protectors are great. Not miss no fuss. Pump them up and forget about bearing problems.



- BB2047SS
by:

Perfect fit and quality construction. The bearing buddies will protect the bearings on my motorcycle trailer. Makes getting grease into the bearings simple and convenient. The grease cap was a replacement for one that came off of my travel trailer.



- BB2047SS
by:

Installed Bearing Buddy Bearing Protectors on a boat trailer to keep the bearings pressurized during launch and retrieve to keep water and grit out of the bearings. They had adequate clearance from the axle so the piston did not rub and they had a good tight fit when driven on with a hammer and block of wood. Quality is excellent. The pressure relief feature and spring loaded piston are great since previous zerk hubs already on the axle did not have that feature and the grease seal blew off when pumping grease into the bearings. Be sure to measure your hub diameter accurately before ordering.


Comments
The Bearing Buddy protectors are still working well.
Bruce J - 12/28/2014


- BB2047SS
by:

These things are great! Easily the best part of my Harbor Freight trailer now. ;) Fit is perfect, and installation was very simple. I pre-filled them with grease, using about 1/2 of a 3oz mini grease cartridge on each. Hammered them on and then filled them up the rest of the way with a few squeezes of the grease gun.



- BB2047SS
by:

After much searching, I finally found the correct size bearing protectors for an older Harbor Freight trailer. I had been searching for a metric size and the BB2047SS protectors fit great! The 2.047" size is exact and with the stainless steel material, the size has to be exact, the stainless does not give. These protectors will probably outlast my trailer. The rubber caps are a nice addition to keep dirt off of the grease fitting. Overall, very impressed. Will be purchasing a set of these for my other twin axle trailer.


Comments
These bearing protectors are working out great, probably have 20 trips to the mountains hauling equipment 230 miles round trip and they are holding up great. Surprisingly the rubber dust caps have also stayed on and held up in severe weather conditions with both heat and snow. Bearings and seal were also replaced and are all holding up well now that the grease stays where its supposed to. Overall, a great product!
Wayne S - 03/03/2018



- BB2047SS
by:

They fit, 52mm id hub. Chinese axle, what more can I say?



- BB2047SS
by:

I use bearing buddies on all my trailers and highly recommend them especially for boat trailers that go under water regularly. Buying from etrailer was a little more expensive than the big box store, but I was impressed that they called the manufacturer of my Trailer to be sure they sold me the correct size. Imagine: an online company that cares enough to check ahead of time! etrailer earned my business.


Comments
After a year they’re still working as planned. If and when I need anything for a trailer I’ll buy it here.
Ed C - 06/29/2018



- BB2047SS
by:

Great product. Installed 8 on a trailer restoration. Very easy to install.



- BB2047SS
by:

Solid Quality,I would buy Bearing Buddy again! Thx



- BB2047SS
by:

The Bearing Buddy's are excellent, its been a year with no issues at all I would recommend a set for anyone owning a trailer.



- BB2047SS
by:

I am a 58 year old single mom .I own a 1984 playmor 2 fiberglass camper , I had made three attempts at the local auto parts store to replace a bearing cover and bra. I called etrailer which in the past was able to find parts for my some what rare camper. Carol took my call on a Sunday afternoon and by Wednesday I had the correct size bearing buddies , with a video on installation I was able to replace them myself. I couldn’t be happier. Every experience I have had with etrailer has been exceptional . Even when I was purchasing some $5 dollar light covers I was given time , advice and information. I can’t say enough about etrailer , I will always use them first and refer others to the site. 5* service



- BB2047SS
by:

I bought these bearing buddies for a trailer that I modified to put a boat on. I put them on other boat trailers I had and never had a problem with water getting in the bearings so I know they do the job they are made for.


Comments
used them all last year going to the lake 3 or 4 times a month and putting the boat in and out of the water and have had no problem. Theyve kept the water out of the bearings of my Harbor Freight trailer.
Rodger V - 01/13/2019



- BB2047SS
by:

Awesome, the bearing Buddy fit like a charm. Great service as always



- BB2047SS
by:

This is the only way you should haul your boat trailer around if in and out of the water.The bearings are under constant pressure keeping out water and lubing also. This is the 3nd set I have bought and have them on all my trailers. I stated years ago and I have never had any issues sense I started using the Bearing Buddy. Pays for it self over and over again. The longer you have the trailer with the Bearing Buddy the more time and money you save!



- BB2047SS
by:

Great product at great price



- BB2047SS
by:

Perfect protection for wheel bearings at a very low cost. I used Bearing Buddies on a trailer that I built 20 years ago. After many uses and spending 2 decades in the California sun and rain, I sold that trailer and the hubs and bearings looked and worked as if they were new. My buyer was delighted. This is the most effective and least expensive protection you can give your trailer. Tip: measure the hub I.D. carefully and buy the Bearing Buddy set that most closely matches your hub bore. Remember that they have an interference fit. TIGHT fit is very important.


Comments
Perfectly! Fantastic product at a low cost.
David K - 07/31/2016



- BB2047SS
by:

Due to online research, I was led to ETrailer for the correct size for my HF trailer. ( I had purchased some from the chain auto parts and they were too small.) Even though I don’t dunk the trailer in water I went with the SS set. Fit perfectly. Have not had a chance to add more grease through them as the trailer sees minimal use, thus 4 stars. I am very satisfied with them, the price, and knowledge of the staff that led me to the correct size. Highly recommend ETrailer and the Bearing Buddies.



- BB2047SS
by:

Perfect fit! JamesonC was very helpful. I received perfect instructions on how to measure the bearing cups so I could order the correct size Bearing Buddy. The cost was reasonable, and just standard shipping arrived quickly. This is a quality product and installation was a snap. I would order from this company again in a heartbeat!



- BB2047SS
by:

Couldn't find the appropriate fit for my trailer in Canada, but the company that manufactured the trailer recommended etrailer as a likely source - and they were right. The review that indicated that this was the right buddy bearing for my particular trailer was exactly right as well. I picked up the parts yesterday and installed them the same day. The fit was perfect, the instructions were perfect and install was perfect. I feel way more confident about hauling my stuff to Newfoundland with these bearings taken care of. Thanks Etrailer.


Comments
Thanks for the follow up to my review - Im currently getting ready for the 3000 km road trip to Newfoundland with a fully loaded trailer. My Buddy Grease Caps are loaded with grease and have no doubt they will perform well throughout the trip.
Glenn - 05/20/2016


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Ask the Experts about this Bearing Buddy Trailer Bearings Races Seals Caps

  • Determining Which Grease Cap Fits Haul Master 4' x 8' Trailer
    I would be happy to help you find the correct grease cap for your Haul Master 4' x 8' trailer but unfortunately we do not have a a breakdown of the parts you specific trailer uses. You will need to use digital calipers like # PTW80157 to measure the hub bore of your trailer's hub to determine the correct grease cap as shown in the included diagram. For example the Fulton Grease Cap - 2.333" Outer Diameter - Drive In # F001601 fits hubs that have a hub bore of 2.333" and is the next...
    view full answer...
    Image 1 for
  • Bearing Buddy FOR Harbor Freight Super Duty Folding Trailer 1720 lb Capacity
    I am here to help the best I can. Based on your measurements you provided, Part # BB2047SS is the the part you are looking for.
    view full answer...
  • Dimensions of Bearing Buddy Bearing Protectors # BB2047
    The Bearing Buddies # BB2047SS are the only grease caps we have for the 2.047 inch hub bore. They also are available in Chrome plated # BB2047. Either Bearing buddy measures 1.776 inches from edge to edge and 1.483 on the outside of the hub without the rubber bra. I reached out to the manufacturer to confirm these measurements.
    view full answer...
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  • What Size Grease Zerk Is On The Bearing Buddy?
    The standard grease zerk fitting is 1/4" and that is what comes with most if not all the bearing buddys # BB2047SS. I've only had to mess with one standard size and use the Powerbuilt Pistol Grip Grease Gun # ALL940798. I suggest getting one because keeping your components greased up prolongs the life of that component.
    view full answer...
  • How to Choose the Correct Bearing Buddies for 1961 Shasta Trailer
    In order to find the correct Bearing Buddy for your 1961 Shasta trailer and based on the measurement from the photo (and assuming your hub bores are not threaded), you will either need Bearing Buddies # BB1980A-SS which fit 1.980" hub bores, or # BB2047SS which fit 2.047" hub bores. I recommend using a digital caliper such as # 301-17068 in order to get the correct size. We also recommend switching to double lip seals if bearing buddies are used since they could lead to blowing out the...
    view full answer...
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  • Difference Between Bearing Buddy 2047 and 2047SS
    The difference is the material the Bearing Buddy is made from. The part # BB2047SS is made from stainless steel and the # BB2047 is chrome plated steel. Stainless will hold up to corrosion much better.
    view full answer...
  • Recommendation For Dust Cap With Grease Nipple For Trailer
    Based on your information, the closest option we have in available inventory is the Bearing Buddy Bearing Protectors, Item # BB2047SS. These work with several outer bearing models and fit a 2.047 inch hub bore. Because of how close these dimensions are to one another, I would double check your measurements and see if they might work. I have attached additional information for you to check out. Let me know if you have any other questions.
    view full answer...
  • Determining Correct Bearing Buddy Protectors to Use on Older Haul-Master Trailer
    The Bearing Buddy Bearing Protectors # BB2047SS referenced in your question are designed to fit 2.047 inch hub bores. I was not able to locate the size of the hub bore or the grease cap used on your Haul-Master Trailer, so your best option will be to simply measure the inside diameter of your hub bore with a digital caliper like # 301-17068. These Bearing Buddy Protectors feature a stainless steel construction for corrosion resistance and will give you an easy way to add grease to the...
    view full answer...
  • Bearning Buddy Recommendation to Fit Hub Bore Diameter of 2.04 inch
    For a hub bore diameter of 2.04 inches the correct Bearing Buddy size is the part # BB2047SS which is designed to fit your hub.
    view full answer...
  • Why Wouldn't a Trailer Come Equipped with Bearing Buddies
    Some axles have EZ lube spindles which means they have a grease fitting mounted at the end of the spindle already. In those cases you would not want a Bearing Buddy. Since the EZ lube spindles are more common than non-EZ lube spindles the Bearing Buddies aren't seen as frequently as you would think. Aside from that they are a great product. We only warn people to try and be careful not to over fill the hubs with grease as that can be pretty easy to do. This causes the seal to blow out.
    view full answer...
  • Which Bearing Buddy Size Will Fit A 1.984 Hub Bore
    The Bearing Buddy Bearing Protectors, part # BB2047SS, fits a 2.047 hub bore which would be too big for your 1.984 hub bore. The next closest size I would have in a Bearing Buddy is the Bearing Buddy Bearing Protectors, part # BB1980A-SS. If you can pull your wheel bearings and get the bearing part numbers that would help you with which Bearing Buddy to use. The part # BB1980A-SS works with outer bearing models L44640, L44643, and L44649. The Bearing Buddy pages also have listings...
    view full answer...
  • Why A Bearing Buddy Is Not Recommended On A 1986 Dodge Ram D100
    The Bearing Buddy bearing protectors are designed for use on boat trailers. On boat trailers, when the trailer is submerged into water the sudden cooling of the bearings causes a vacuum that will try to suck water into the bearing area. This water will break down the grease and also contaminate the grease with dirt, which will cause corrosion and pitting on the bearings of your trailer axle. The Bearing Buddy bearing protectors will fill the axle hub with grease which will keep a slight...
    view full answer...
  • How To Determine Which Bearing Buddy Fits Single Axle Pontoon Boat Trailer
    There are a few Bearing Buddy sizes between 1.980" and 1.78" that you mentioned. There is the Bearing Buddy Bearing Protectors - Model 1810 - Chrome Plated (Pair) # BB1810 which fits hub bores that are 1.810", the # BB1938 which fits hub bores that are 1.938", and the # BB1968 which fits hub bores that are 1.968". To confirm which one is correct for the hubs on your single axle pontoon boat trailer you will need to use digital calipers like # PTW80157 to precisely measure the hub...
    view full answer...
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  • Replacement Boat Trailer Hub with Inner Bearing L44643
    Repairing your boat trailer doesn't have to be a nightmare. I will help you to make it a sweet dream instead! You really should have both bearing numbers to ensure you get the right hubs for your trailer. The good news is you have to take the hub off anyway if you are going to replace it. Both of your bearings are likely L44643 but to be sure I would like to know the outer bearing number as well. If they are indeed both L44643 then hub # 8-258BTUC1 will fit if the wheel bolt pattern...
    view full answer...
  • What Bearing Buddy Will Fit Trailer Hub Assembly # 8-258BTUC1
    I went out to the warehouse and did a test fit between the hub, # 8-258BTUC1, and Bearing Buddies, # BB1980A. The Bearing Buddies, though they are 6 thousandths of an inch smaller, will still fit tight in the hub bore. Bearing Buddies have to be driven in by putting something like a block of wood on the top and hitting the wood with a hammer. The wood disperses the energy from the hammer more evenly.
    view full answer...
  • Availability Of Bearing Buddy To Replace 52mm Grease Cap On Venture Trailer
    We have exactly what you are looking for. 52mm is equal to 2.047" so the correct Bearing Buddy Bearing Protector is the # BB2047SS you were looking at that measures exactly 2.047". I included a video of the # BB2047SS for you to take a look at.
    view full answer...
  • Picking Out Bearing Buddy for Harbor Freight Trailer
    In order to pick out the correct bearing buddy you will need know the pilot hole of your hub. To do this, remove the wheel and tire and remove the grease cap from the center of the hub. Usually it is a metal cap that is just lightly hammered into place. Use a screwdriver to pry off the cap. Clean the grease off and measure the opening. I have included a video demonstrating the Bearing Buddy. The Bearing Buddies # BB1980A-SS for example are for hubs with a 1.98 inch hub bore.
    view full answer...
  • Bearing Buddy Recommendation to Fit Trailer Hub Bore 2.04 inch on Harbor Freight Trailer
    If your hub has a grease cap opening that measures 2.04 inch the correct Bearing Buddy is the part # BB2047 that you referenced. Or for a stainless steel version you'd want the part # BB2047SS.
    view full answer...
  • Bearing Buddy Sizes Compatible for Hub 2 Inch Inner Diameter
    There are a couple of sizes close to your 2 inch diameter. If you measured with a digital caliper that goes to the thousandths like # 301-17068 then that will be much easier to determine the fit. We have the 2.047 inch # BB2047 in chrome plated or # BB2047SS in stainless steel. We also have the 2.080 inch # BB2080 in chrome of # BB2080SS in stainless steel. If it is smaller we have the 1.80 inch # BB1980A-SS in stainless steel. The fit should be snug to prevent leaks...
    view full answer...
  • Bearing Buddy Compatibility with Harbor Freight Trailer 62648
    Harbor Freight trailers are notorious for not using standard trailer part sizes, but there are times we find a fit. If you measure your hub on the inside of the grease cap with a digital caliper like # PTW80157, I will gladly help you find the correct Bearing Buddy if we have one compatible. You will need to remove the grease cap and either measure the inside of the hub or you can measure the outside edge of the grease cap behind the ridge where it inserts into the hub. The diameter...
    view full answer...
  • Which Bearing Buddy Fits the Detail K2 Mighty Multi A-Frame Utility Trailer # K2MMT5X7
    I had the Detail K2 Mighty Multi A-Frame Utility Trailer # K2MMT5X7 pulled from our warehouse and used the Digital Caliper # 301-17068 to find that the hub bore measured 2.041". Although it is slightly larger than the hub bore, I was able to find that the Bearing Buddy that fits a 2.047" hub bore will fit perfectly on the trailer. This size Bearing Buddy comes in Chrome Plated # BB2047 or Stainless Steel # BB2047SS. I have attached some review videos of the Bearing Buddy options for...
    view full answer...
  • Bearing Buddy Grease Caps for Hub Bore Dimension of 2.05-Inches
    Bearing Buddy bearing protector grease caps are made in many sizes and we carry those most often used in recreational trailering. You can see all Bearing Buddy parts we have by clicking on the page I linked for you. Bearing Buddy grease caps are made both with and without threads so you'll want to check your hub bore to see if it is threaded or not. Click on the appropriate type on the page. For a dimension of 2.05-inches you can use a Bearing Buddy kit in size 2.047-inches, such...
    view full answer...
  • Replacement Dust Cap or Grease Cap for Trailer
    We do have replacement dust caps. You will simply need to use a digital caliper like # PTW80157 to determine the size needed. I've linked the page to all your options to assist. I've also linked the page to the bearing protectors that have the integrated grease zerk to maintain them.
    view full answer...
  • Finding The Right Size Bearing Buddy For Utility Trailer
    You'll need to use an accurate measuring device like a digital caliper to measure the inside diameter of the hub bore. A ruler or tape measure wouldn't be accurate enough. I have attached a photo of a hub that shows where the measurement should be taken. If you measure and find the opening to be 1.98 inches then the Bearing Buddy I recommend is part # BB1980A-SS. If you find that the inside hub bore measures 2.047 inches, part # BB2047SS would work well for you. If you find that...
    view full answer...
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  • What Size Bearing Buddies Will Fit a Harbor Freight Trailer 94564
    I actually called Harbor Freight about your trailer to determine what size dust cap is used on that trailer. I reached a tech and he stated that the dust cap is 52mm or 2.0488 inches. It looks like the best option is # BB2047 or # BB2047SS . However, you normally want them to be slightly larger than the hub bore to fit snugly. One thousandth of an inch may not be an issue but you need to be aware that it is not exact.
    view full answer...
  • 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...
  • Grease Cap Recommendation for a Harbor Freight Trailer 90154
    The 2.09 grease cap that you tried might be the one to use. They are supposed to be a tight fit and require being tapped in with a hammer and a flat piece of wood like a 2x4. There is a Bearing Buddy that fits right between the two sizes you have tried though. The part # BB2047SS has an outer diameter of 2.047 inches.
    view full answer...
  • Recommended Bearing Buddy for 2 Inch Hub Bore
    We have a few Bearing Buddy Bearing Protectors available that are designed to fit a hub bore of around 2 inches in diameter, but not one that measures 2 inches exactly. I recommend using a digital caliper like # PTW80157 so you can take an exact measurement of your existing hub bore. For example, the Bearing Buddy Bearing Protectors # BB1980A-SS are designed for 1.980 inch diameter hub bores while the Bearing Buddy Protectors # BB2047SS are compatible with hub bores that have a diameter...
    view full answer...
  • Looking for Grease Cap with Zerk Fitting with an Outer Diameter of 2.02 inches
    It sounds like you are looking for a bearing protector style of grease cap. We have a variety of bearing protectors in several different sizes but none with an outer diameter of 2.02 inches. The bearing protectors closest to your OD measurement of 2.02 inches is either going to be 1.98 inches or 2.047 inches. Bearing Buddy grease caps are made both with and without threads so you'll want to check your hub bore to see if it is threaded or not and while you're at it, confirm the number...
    view full answer...
    Image 1 for
  • What Size Bearing Protector Will Fit a Harbor Freight Utility Trailer with 2.047 Inch Hub Bore
    With a hub center hole diameter of 2.047 inches, there are 2 Bearing Buddy options for you. First we have # BB2047 that you have referenced. These are chrome Bearing Buddies. The other option is a set of stainless steel Bearing Buddies, # BB2047SS.
    view full answer...

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Info for this part was:

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