3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

Part Number: 804

$16.46

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redline boat trailer parts 2-3/4 inch diameter 3-3/4 long rubber keel spool-type roller for trailers

redline boat trailer parts spool roller 2-3/4 inch diameter 804

redline boat trailer parts rollers 2-3/4 inch diameter 3-3/4 rubber keel spool-type roller for trailers

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In-Depth Review of the 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

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1-800-940-8924 to order Redline boat trailer parts part number 804 or order online at etrailer.com. Free expert support on all Redline products. Great prices and Fastest Shipping for 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers. Boat Trailer Parts reviews from real customers.

Redline Boat Trailer Parts - 804

The Spool-Type Keel Roller is designed to support the keel of lighter boats, allowing easier launching and loading of boats.

Overall length: 3-3/4"
Overall diameter: 2-3/4"
Mounting bolt hole diameter: 5/8"

804 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

Video of 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

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

Video Demo Redline Boat Trailer Parts 804

In-Depth Review of the 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

Video Transcript for In-Depth Review of the 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers

Today, we're going to review part number 804. This is the Redline 4-inch Rubber Keel Spool-Type Roller for boat trailers. This spool-type keel roller is designed to support the keel of lighter boats and allow easier launching and loading of the boats. It does have an overall length of 4 inches and the diameter on the roller is 3 inches. Now, the measurement of the flat area on the roller itself will measure 1-1/2 inches and the measurement from the outside of the roller to the start of where the flat spot is, they would measure 1-1/4 inches on each side. Now, the hole size is 5/8 of an inch.

That means it will mount on a shaft diameter of 5/8 of an inch. That should do it for review on part number 804.

4.8

57 reviews

5 Stars		(48)
4 Stars		(7)
3 Stars		(2)
2 Stars		(0)
1 Star		(0)

by: Richard 05/17/2018 One Year Later

Utilized several products purchased from etrailer while building a double trailer for two sneak boxes. etrailer always had the products I needed in stock, delivery was prompt and their service/follow up was excellent. I will not hesitate to continue to purchase from them in the future.

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by: Rich H. 05/06/2014

I have done two separate orders with etrailer. First a set of leaf springs and a tire, second a set of keel rollers. It's been a very good experience. Great service, quality parts, really good prices. I would recommend them absolutely!

Rich H. One Year Later

5/6/2015

I am completely satisfied with the products I purchased.

by: David 08/26/2025

as advertised prompt shipping

by: Ryan S. 09/02/2014

Works as planned. Wished it came with a galvanized bolt or stainless bolt to use.

Ryan S. One Year Later

9/9/2015

All are working well and everything intact. Will order another tire and wheel to replace my aged spare for my jon boat trailer soon.

by: EP 06/05/2016

I bought these rollers to replace old ones on a trailer that had been setting for several years and had deteriorated badly. I looked all over and couldn't find any where I live so found these and ordered them. They appear to be of high-quality rubber and should do the trick. These 4" rollers measure 3 3/4" long, but that's okay because I actually need them slightly shorter than that for my trailer, and no on makes the size I need anymore. I think I can get these to squeeze in. I haven't installed them yet, or had them for long, so can't write about how long they last, but they look to be good quality.

by: Don M. 10/23/2014

I had a small order: just 4 bunk brackets and 3 rubber rollers for a trailer I just rebuilt for a fishing boat. I was impressed with the quality/price of the items and with the service. I will order again from etrailer.com...........

by: Dennis 06/05/2018

If you have a boat trailer that has roller brackets that are 4 inch and the current roller are tight these are the rooler you want, With a width of 3 and 3/4 they fit perfectly

by: Charles C 02/26/2020 One Year Later

We have to give you a 5 star rating because we've been restoring a 1970 Starcraft 15' fishing boat and just finished it. Maiden voyage will be this spring when we take it to Lee's Ferry on the Colorado River. As it stands, the rollers are in place and no reason they should not perform well. We appreciate the apparent quality.

by: ed e. 11/14/2013

I had no difficulty installing this item. It seems to be an exact replacement for my old trailer roller. My old roller had a nylon tube to maintain dimensional stability for the bolt hole; this new model has a plastic pipe tube instead. But the functionality seems to be the same.

by: Art S. 08/09/2013

Product seems of good quality. Shipping was great and the tracking information on where the product was is the best I have ever seen. I would recommend this company to anyone and look forward to doing business in the future.

by: Cathy Walrath 03/12/2014

Perfect for our trailer. Love the website, super fast shipping. This keel spool is super durable and highest quality.

by: Doug 02/12/2015

Great quality, fast shipping ...not sexy but look forward to having them on my boat. etrailer is my "go to" company for anything trailer related.

by: Todd H. 05/15/2015

Great price and speedy delivery. My roller brackets were to narrow for a 5", so used the 4" with some washers on either side. Fits like a charm now!

by: Kevin N 08/13/2013

Item did exactly what is needed to do. e trailer is great with very fast shipping and great communication.
Will be dealing with them again.

by: rob w 04/06/2012

quick shipping and great customer service follow up.

by: Doug Nelson 01/23/2015

Exactly what I ordered for replacement parts. Could not be happier.

by: Doug Nelson 01/23/2015

Exactly what I ordered for replacement parts. Could not be happier.

by: TRISTAN 08/08/2014

Excellent products, excellent fitment, with excellent service from E TRAILER

thank you

by: Wayne S. 10/29/2014

Good product at a great price. Fast shipping. Would definitely order again!!!

by: Matt H. 10/11/2013

Fast shipping, product worked well on my boat trailer rebuild.

by: Dennis 08/12/2014

Roller was right size and worked well. Etrailer got it here quick.

by: Mark N. 08/02/2017

Excellent quality. Arrived very quickly. Just what I needed to make some needed repairs to my boat trailer. Will definitely shop here again.

by: Dale H 03/24/2017

As Described Fast Shipping, Fair Price

by: Parts for venture trailer 08/26/2013

Perfect replacement keel roller for my venture trailer i have for 14 ft boat

by: Steven 07/10/2018 One Year Later

Really enjoying the products!

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See what our Experts say about this Redline Boat Trailer Parts

Do you have a question about this Boat Trailer Part?

Troubleshooting a Boat That Wants to Load Crookedly
Typically, if you are loading a boat and is not wanting to load squarely it is because your trailer is backed too deep into the water. That is the case most of the time with this issue, usually it takes trial and error to determine exactly how much of your trailer should be underwater to find the sweet spot. I would recommend using part of the trailer (such as a fender) as a reference point for how much should be underwater to find the sweet spot. Another solution people have is to switch...
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Rubber Keel Roller Shaft for 3-3/4 Inch Spool-Type Roller and Mounting Bracket
The 3-3/4" Rubber Keel Spool-Type Roller for Boat Trailers # 804 can use the Roller Shaft with Pal Nuts for Boat Trailer Rollers - Zinc-Plated Steel - 5-1/4" x 5/8" # CE10721A. We do not have a shorter roller shaft length, so if you have a mounting bracket requiring a shorter length you would need to trim it and then paint the trimmed edge to prevent corrosion prior to installing the pal nut. Most often this roller is paired with that shaft as well as the CE Smith Panel Bracket for 4"...
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3 inch Boat Roller Availability
We sell 3 inch bow rollers like the part # YR300Y that is designed to attach to a 1/4 inch stud. Or for a 3-3/4 inch one you would want part # 804 or # YR4174-4.
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Do you have a question about this Boat Trailer Part?

Info for this part was:

Expert Research:

Robert G

Expert Research:

Michael H

Installed by:

Jeff D

Updated by:

Wilson B

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