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Availability:
In Stock.
Arrives
Wednesday, Jun 10
Features
- Brand New Echo 99944200907B Speed Feed 400 Trimmer Head...
Description
Brand New Echo 99944200907B Speed Feed 400 Trimmer Head... Genuine Echo Part 99944200907B Fits All ECHO (SRM) Models Easy tap-to-advance reload Accepts 0.080 in. - 0.105 in. diameter line Genuine OEM Echo Part
Product Dimensions: 5 x 3 x 5 inches
Item Weight: 11.3 ounces
Manufacturer: Echo
Item model number: 99944200907S
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This genuine Speed Feed 400 head is a perfect fit for my SRM trimmer and works exactly as advertised. Installation was quick and easy, and it was ready to use in just a few minutes. The best feature is how fast and simple it is to load new trimmer line. I can reload in under a minute without having to take the head apart, which saves a lot of time during yard work. Once loaded, the line feeds smoothly and evenly with no jams or tangles. The build quality feels solid, and after multiple uses it still operates like new. It handles heavy grass and weeds with no problem and keeps the trimmer running efficiently. One thing to note is that it did not come with the adapter parts needed to fit other brands, so if you plan to use it with a non-SRM trimmer, you may need to buy additional hardware. For SRM trimmer owners, it is a great upgrade, but anyone using a different brand should check compatibility before purchasing.
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Reviewed in the United States on August 10, 2025 by Michael Beverly
Very Happy with this item. Works well.
Reviewed in the United States on May 28, 2026 by Rich Bereswill
Can’t believe I’ve been putting up with an 8-yr old head that stopped bumping years ago. I ordered this OEM part (Echo Speed Feed 400 replacement head) for my Echo SRM 225 string trimmer and it screwed in and I was trimming in under 5 minutes. And I’m not mechanically handy at all There are no instructions or adapters in this kit so when I opened the package—WHICH WAS DELIVERED THE SAME DAY I ORDERED IT— I had a twinge of regret for ordering it around midnight and being too lazy to go out to the garage to double check what specific Echo model I have. This is not one of the universal heads with a variety of adapters, this one is made by echo to fit echo trimmers. I got a little anxiety realizing that my trimmer needed to be one of the models this head fit, and there wouldn’t be any adjusting with adapters So I grabbed the replacement head and took it to the garage and immediately saw that I was in luck as the trimmer hanging vertically displayed the model # prominently: SRM 225 I watched 5 seconds of a YouTube video and saw that the original head should screw off. Probably should have watched 3 sec more because 1. First u need to insert a small screwdriver into a slot which rotates around the housing and then spin it until it catches…2. NOW the shaft is held still and the head can be screwed off in *counterclockwise fashion This took me about 3 min to figure out on my own and was the most difficult step. Of course the video went over this if I had just hung in there for a bit longer Once the old head was off I realized that the shaft and drive gear thingy and all parts of the housing had hundreds of threads of the black plastic landscaping fabric that I put under my mulch to keep weeds from growing root networks I knew those strings of plastic often wrapped around the head while trimming but I thought I was stripping them off each time. Nope, I was just removing only the most obvious threads that hung outside the head. The inside was packed tightly with chaotic spools of them. Those threads undoubtedly contributedt to the breakdown and warping of the original head and probably were causing the string windings to get crammed and stick together preventing the ends from being lengthened unless i took the head cap all the way off and unwound them Pulling them out took a minute or two, and I cursed my laziness again and then screwed on the new head, depressed the bumper and released some string and fired that hot beyatch up and it was really just that easy! Echo made a great trimmer in the SRM 225 and I’m quite used to the length, balance, and head angle on the shaft so hopefully the motor will last another few years. With trimmers like these selling for well over $200 the authentic Echo Speed Feed 400 is a tremendous value proposition. It’s $10 more expensive than the universal replacements made by other brands but the shipping time was crazy fast and it was a breeze to install. I would recommend it unreservedly
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Reviewed in the United States on September 8, 2024 by Heidi
Get one you’ll it. 😀
Reviewed in the United States on June 1, 2026 by John C
it works as it should I have used it about 3 times this year to trim around my yard and edge my sidewalks. the product seems well built to a point. the plastic is a bit softer than it needs to be for the price I would expect better, harder plastic to be used. I have bumped it a few times and it is already showing wear and it's not that thick like the original equipment. My ECHO weed eater was new back in 1999 and I have replaced some parts as it has been a great product throughout the years. Unfortunately, this is the cheapest most expensive part I have replaced. I do however believe I will continue to order my parts from an online ECHO dealer as I have always done in the past. The string is .0845 not a .095". I used a .105" with the original feed head that was replaced due to the failure to feed properly. If you do chois to order this part, do keep in mind that replacement heads will be needed at some point depending on the usage. Rocks, Concrete, and other harder surfaces will wear it out a lot quicker than a grassy area. Other than the thin plastic it is built well and it does come with .085" string. Overall I would recommend this part as a replacement.
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Reviewed in the United States on June 1, 2026 by Christina Shultz
works and fits perfect
Reviewed in the United States on May 31, 2026 by Hub
Echo 400 came in a plastic bag, no instructions - just the head. I removed the prethreaded line. Rethreaded it following Echo’s instructions; which I had to go to the internet to gather. Set it up, installed on trimmer Troy-Bilt Straight shaft. Fired up the trimmer everything seemed to work just fine. Walked the perimeter of my yard and trimmed grass. I noticed the line was retracted, so I bumped the head and the line fully retracted into the head. Instead of the line be fed outward it retracted. I fooled around with this line and rethreaded 8 times. Not once did the line fed outward only retracted into the head. I went onto ChatGPT, And other AI sites and they mentioned it’s either the winding counter/or clockwise or the wrong size string. I have no idea and completely frustrated with the product. I’m ordering one more time directly from Echo. Let’s see…
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Reviewed in the United States on April 25, 2026 by CasaMan
awesome trimmer head. installed in two minutes. great buy. i have been fighting with my worn out head for months this made trimming the lawn a breeze.
Reviewed in the United States on May 28, 2026 by Phil wing