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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 | #80,809 in Automotive ( See Top 100 in Automotive ) #13 in Automotive Replacement Wheel Cylinder Bleeder Brake Screws |
| Brand | Dorman |
| Color | Black |
| Compatible Groove Diameter | 0.25 Inches |
| Customer Reviews | 4.5 4.5 out of 5 stars (430) |
| 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 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 | 0.05 Pounds |
| Manufacturer | Dorman Products |
| Material Type | Metal |
| Metal Type | Alloy Steel |
| Model | 902-404 |
| Number Of Items | 1 |
| Number of Pieces | 1 |
| Part Number | 902-404 |
| 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 |
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