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Trailer Hub Grease Cap, 1.988" OD Drive In
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're going to take a look at the trailer hub driving grease caps. These have a 1.988 overall diameter. This part is for a quantity of two of them. These grease caps are used for your trailer hubs. They're commonly used on 3500 pound axles. These are made of a 22 gauge steel construction.
They are a drive-in installation. They have a corrosion resistant zinc plating to them. This is for a quantity of two. The two important measurements will be the flange diameter which is the overall diameter from this edge to this edge. If we put a ruler on that, it's going to come out to about 1.988 inches. The overall height from the bottom to the very top, that's going to be right at 1.156 inches.
That should do it for the review on the trailer hub driving grease caps with the 1.988 overall diameter, and it's for a quantity of two.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
This was the best match I could find for an odd (non-standard) diameter grease cap. It did not fit the 2.0 inch hubs perfectly, but it fit as well as those that claimed to be exactly 2.000" and were actually smaller.
This was my first time ordering. This site was recommended by a friend. I loved the email updates of my confirmation, shipment, tracking and this follow up. My parts all have great fitment. The package arrived intact. Thank you Etrailer.
The grease caps were excellent. I installed them with an install tool on both of my boat trailers. I used an install tool for doing this, which made the job easier.
Not much I can say about a replacement bearing cap set. I lost one of my old caps on my last camping trip and decided it was a good time to pull apart the bearings and replace them. The new cabs have a nice machined metal look
First time buyer @ etrailer, web-site was easy to navigate and find what I needed at a very good price. Shipping was very quick. Parts installed without any problems... very nice fit.
Thanks, will be looking forward to our next shopping trip.
Replaced the existing caps that had access to the grease fittings with a rubber grommet for a cover. I don't think greasing the bearings from the end of the axle is the way to go. I took some steel wool and roughed up the outside and painted them with black paint to match the hub.
I order these parts every year when I repack my wheel bearings. They work well and with e-trailer it is easy to order.
The grease caps had a very snug fit on my trailer, so it took a lot of tapping to get them on, but that is a good thing. The old grease caps were apparently loose enough that one fell off. Great product, thank you!
I ordered new wheel bearing kit’s, extra cotter pin’s and hub end cap’s because one fell off going down the road. All the parts were right and came in good condition I just installed them part yesterday everything went really good and easy. Thank you for having all he parts I needed.
Can't say enough good things about etrailer knowledge, service and speedy delivery. It's a regular encyclopedia for trailer parts. Ricky knew exactly what I needed, me being a first-timer on wheel bearing replacement and repacking. These grease caps took some pounding (with a rubber mallet) but went on my 8-91A Dexter hubs nice and tight without a dent.
Used these on a homemade flatbed reusing an old camper axle from the 50's the numbers on the old bearings did not cross to anything current, fortunately E Trailer has the specs online a few measurements with a caliper and you are in business. Thanks E Trailer
The caps were exactly what I hoped them to be,
the pictures with the items help me identify the part I need, thanks etrailer
I replaced all the bearings races seals and brakes on a small travel trailer. Bill P.at etrailer took my order and three days later I had everything in my hands. Great job Bill ! All the parts were exact replacements and the install went very smooth. There is video help on their website to show how to make the install easier. I have been dealing with etrailer for several years and have never had a bad experience. I was completely blown away by the pre assembled brakes . Backing plate, shoes, actuators, self adjusters and wiring all ready to bolt on. How much easier can it be? With the best prices, fast shipping and great help on line etrailer is the way to go.
I found the personnel to be extremely helpful in getting me the correct parts...My order was delivered ahead of schedule and appears to be correct...I am extremely satisfied with the pricing as I couldn't find the same components at a lower cost by any of the local vendors; thanks again and I will definitely continue my business
Mike B.
5/3/2018
havent had any problems thanks I will buy more from you at an unspecified future date
Exactly what I needed. Very good quality and perfect fit! Fast shipping of the parts and well packed!
B34
10/17/2017
As always anything that I have purchased from etrailer has always been the best quality and at the best price!
Their just grease caps that cover your spindle nut, nothing special
Tyler
5/8/2023
It’s been great haven’t had any problems
Thought these were right for the 3500lbs. drop axle with the EZ lube hubs but they were just a hair too big, had to bend the flange in a bit and then beat the hell out of 'em but they work. My old dust covers from my old axle were not deep enough and the EZ lube grease zerks would hit the inside of the cap.
A++++ fast shipping
I'm very pleased. The item was shipped and received quickly, and the diameter of the dust caps' diameters measured exactly what they were nominally listed as (1.98"). They were also cheaper with etrailer than anyplace else, in my online search.
Steve M.
6/7/2017
I ordered the wrong size. I just tried to install them, and found that the bore is substantially larger. I have a Haul Master trailer from Harbor Freight. Do you have the right grease caps?
Rachael H.
6/9/2017
Purchased to repair/replace Bolen's HT-20 tractor front wheel bearings.
Easily installed by driving into hub with scrap wood and hammer.
Affordable, relatively quick repair completed in between snow storms.
Thank you again eTrailer!
Christian
2/11/2022
Worked great for my 1980 Bolens HT-20, thanks
Exact parts I needed and shipped quickly for a very timely repair.
My trailer is usable again with the minimal of down time.
Great company to deal with.
Victoria H.
3/28/2025
Thanks Thomas! Glad to hear we had what you needed to make your repair a breeze. Sounds like your set up is rolling smoothly again, and you're ready to keep hauling confidently!
Part received is as described.
Nice fit.
Looks ok. I wouldn't have let something leave the warehouse like this (see pictures) but that's just me. Looks like hammer marks and a tiny flaw in the edge, but I used it anyway because it's in better condition than the old ones. It's something you're going to beat in with a hammer and block, so whatever and it'll be fine. A 5 star value
This is a simple product. Viewed as a replaceable by most folks. I appreciate that they are currently not 12$ a piece ! Thanks etrailer. (smile)
These hub caps were very difficult to find. I appreciate etrailer for being experts in trailer parts so I could fix what I had instead of having to purchase a new trailer.
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Terry
4/19/2016
Great! the lug bolts were perfect also