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🔧 Upgrade your cooling system with confidence — don’t let leaks slow you down!
The Dorman 902-404 Coolant Air Bleeder Screw is a premium replacement part crafted from durable alloy steel to endure high temperatures and pressures in your vehicle’s cooling system. Designed to match the original equipment’s fit and function precisely, it ensures a leak-free seal and easy installation. Backed by over a century of Dorman’s automotive expertise and a limited lifetime warranty, this bleeder screw offers lasting reliability and peace of mind for professional-grade vehicle maintenance.
| ASIN | B009XA8DQ6 |
| Best Sellers Rank | #59,291 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Replacement Wheel Cylinder Bleeder Brake Screws |
| Brand | Dorman |
| Color | Black |
| Compatible Groove Diameter | 0.25 Inches |
| Customer Reviews | 4.5 out of 5 stars 429 Reviews |
| Drive System | BLEEDER |
| Exterior Finish | Ready To Paint If Needed |
| Fastener Size | Screws With O-rings |
| Fastener Type | Screw |
| Finish Types | Unpainted |
| Global Trade Identification Number | 00019495366928 |
| Grade Rating | Premium |
| Head Style | Fillister |
| Head Type | Fillister |
| Included Components | Engine Coolant Bleeder Screw |
| Item Diameter | 0.25 Inches |
| Item Dimensions | 1.2 x 2.8 x 2.8 inches |
| Item Weight | 22.68 g |
| Item dimensions L x W x H | 1.2 x 2.8 x 2.8 inches |
| Manufacturer | Dorman Products |
| Material | Metal |
| Material Type | Metal |
| Metal Type | Alloy Steel |
| Model | 902-404 |
| Number Of Items | 1 |
| Number of Pieces | 1 |
| Part Number | 902-404 |
| Point Style | Self-Piercing Point |
| Screw Head Style | Fillister |
| Screw Point Style | Self-Piercing Point |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | Larger than 0.25 inches |
| Thread Class | 2A |
| Thread Coverage | Partially Threaded |
| Thread Size | oem |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 019495366928 |
| Unit Count | 2.0 Count |
| Warranty Description | Limited Lifetime Warranty |
S**R
Fits most bmw coolant overflow
Dispatch most BMW lead valve. I have used them on a 1998 M3 as well as a 2008 335i. He screws are prone to strip or get lost when you undo them to add coolant. It is great to have extra.
S**F
Solid product, great price.
They come with new o-rings which is a plus. Arrived as expected, easy to install, working as designed. Good price 👌🏽 If you want something more durable, there are brass options available in the market.
B**R
Better than oem
Fit like oem
C**K
Works like OEM - BMW X3 E83
Overtightened the bleeder screw on my e83 X3 after replacing thermostat. Ordered these from Amazon, delivered the next day. Been over a year since install, No issues.
D**T
Coolant bleeder
They are plastic . So easy to strip out have a spare one on hand. Fits fine.
A**O
Good quality
Got the job done, seems to be better quality then factory ones.
S**R
Good fit
Good fit just don't over tighten or you will strip them ,,great price
L**S
Good product
As all the screws that are plastic once used it still has to be replaced but afordable, fits perfect & good value
K**O
Fit As The OEM
I replaced my thermostat in my 2013 Jeep Grand Cherokee and damaged the bleeder screw and o-ring. I thought I would have to replace the complete OEM thermostat. These saved me. Fit just like the OEM. These come with the orings. And one spare bleeder assembly for the glove box!
D**L
Inexpensive
Did the required repair. Still holding, no issues to report.
R**Y
It says it won’t fit my vehicle but it does
I don’t think that the amazon vehicle match is accurate. I bought this and it fits my 2005 bmw 320i. It was a very convenient and easy fix instead of replacing the whole hose.
A**R
A good replacement they fit perfect and I haven't had any issues with them yet
They fit great in my 2000 bmw 528i and I have had them for a couple months now and they have had no issues.
J**E
Fast shipping
Doorman is a good product but unfortunately these will not work for the bleed screw on the coolant expansion tank on a lr3
Trustpilot
4 days ago
1 week ago