Dorman
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Dorman 902-404 Coolant Air Bleeder Screw
Dorman 902-404 Coolant Air Bleeder Screw
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Dorman 902-404 Coolant Air Bleeder Screw
Dorman 902-404 Coolant Air Bleeder Screw
This engine coolant bleeder screw offers original equipment quality at a competitive price
Dorman 902-404 Coolant Air Bleeder Screw
Item #: 543312

Dorman 902-404 Coolant Air Bleeder Screw

89% of respondents would recommend this to a friend

Item #: 543312

ANG 25

ANG 29

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This engine coolant bleeder screw offers original equipment quality at a competitive price
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What Stands Out

Compatibility
Designed to fit select models, ensuring perfect integration with various engine systems, this bleeder screw eliminates compatibility issues commonly faced with aftermarket parts.
Durable Material
Constructed from high-quality materials, this screw offers enhanced durability and resistance to corrosion, promising longevity and reliable performance under harsh engine conditions.
Easy Installation
Engineered for user-friendly installation, the Dorman coolant air bleeder screw allows for quick and hassle-free replacement, making it ideal for both DIY enthusiasts and professional mechanics.

Product Details

Prevent cooling system leaks with the durable Dorman 902-404 Coolant Air Bleeder Screw. Get the perfect fit and function with this OEM-compatible screw. Shop now on Ubuy Sint Maarten.
  • Manufactured from durable materials to prevent cooling system leaks
  • Matches the original screw for fit and function
  • Offers original equipment quality at a competitive price
  • Undergone try-on and material testing to ensure quality fit and long service life
  • Ideal replacement for select vehicle models
  • Designed to withstand high cooling system temperatures and pressures
Item Dimensions1.2 x 2.8 x 2.8 inches (3 x 7.1 x 7.1 cm)
Thread Sizeoem
Item Weight22.68 g
Thread CoveragePartially Threaded
Fastener SizeScrews With O-rings
Size NameStock
Item Diameter0.25 inches (0.6 cm)
Compatible Groove Diameter0.25 inches (0.6 cm)
Number of Pieces1
BrandDorman
ColorBlack
Fastener TypeScrew
UPC019495366928
Global Trade Identification Number00019495366928
Unit Count2 Count
Number of Packs1
Included ComponentsPer Item Description
ManufacturerDorman Products
Model902-404
Number Of Items1
Part Number902-404
Screw Head StyleFillister
Screw Point StyleSelf-Piercing Point
Head TypeFillister
Thread TypeUnc
Set Screw Thread TypeUnified National Coarse (UNC)
Thread StyleRight Hand
Thread Class2A
Drive SystemBLEEDER
Grade RatingPremium
Material TypeMetal
Exterior FinishReady To Paint If Needed
Metal TypeAlloy Steel
Finish TypesUnpainted
MaterialMetal
Head StyleFillister
Item dimensions L x W x H1.2 x 2.8 x 2.8 inches (3 x 7.1 x 7.1 cm)

What's in the box

Per Item Description

Who Should Buy?

Suitable For
  • DIY Mechanics

    Ideal for home mechanics wanting to easily bleed coolant systems without hassle or professional help.

  • Vehicle Owners

    Perfect for owners of select vehicles needing an efficient solution to prevent overheating due to trapped air.

  • Preventive Maintenance

    Beneficial for users performing regular vehicle maintenance to ensure optimal cooling system performance.

Not Suitable For
  • Professional Mechanics

    Not ideal for professional mechanics who may prefer advanced tools and systems over simple bleeder screws.

Product Description

About This Item

Introducing the Dorman 902-404 Coolant Air Bleeder Screw, the perfect solution for ensuring your vehicle's cooling system is operating at its best. This high-quality bleeder screw is compatible with select models, making it a convenient and reliable choice. Designed by Dorman, a trusted name in the automotive industry, this coolant air bleeder screw is expertly crafted to meet or exceed OEM specifications. It is precision-engineered to provide an exact fit and optimal performance.

The Dorman 902-404 Coolant Air Bleeder Screw helps remove trapped air from the cooling system, preventing air pockets that can cause overheating and damage. By allowing the efficient circulation of coolant, this screw promotes proper cooling and helps maintain optimal engine temperature. Easy to install, this coolant bleeder screw is a simple yet essential part for any cooling system maintenance or repair. It is built to last and withstand the rigors of daily use, ensuring long-lasting performance and peace of mind. When it comes to your vehicle's cooling system, trust Dorman for reliable and durable solutions.

Don't risk overheating or engine damage – get the Dorman 902-404 Coolant Air Bleeder Screw today and keep your vehicle running smoothly. Note: Please check compatibility with your vehicle's make and model before purchasing to ensure a proper fit.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the Dorman 902-404 Coolant Air Bleeder Screw?

    Answer: The Dorman 902-404 Coolant Air Bleeder Screw is designed to help eliminate air pockets in the cooling system of your vehicle. Air trapped in the cooling system can lead to overheating and engine damage. This screw allows the release of trapped air when refilling the coolant, ensuring proper circulation and optimal performance. For example, if you've recently changed your coolant or performed maintenance on your vehicle, using this screw will help maintain the necessary coolant level and pressure, thereby preventing overheating issues.
  • Question: Is the Dorman 902-404 Screw compatible with all vehicle makes and models?

    Answer: No, the Dorman 902-404 Coolant Air Bleeder Screw is not universally compatible. It is specifically designed to fit select models, particularly those set up for coolant systems that require air bleeder screws. To ensure compatibility, it's crucial to check your vehicle's manual or use an online compatibility tool based on your vehicle's make and model. This will prevent any installation issues and ensure that you are using the right part for your cooling system.
  • Question: How do you install the Dorman 902-404 Coolant Air Bleeder Screw?

    Answer: Installing the Dorman 902-404 Coolant Air Bleeder Screw is a straightforward process. First, ensure your engine is cool and the coolant level is correct. Locate the old bleeder screw, typically found on the engine's cylinder head or water outlet, and carefully remove it using a wrench. Then, take the new Dorman screw, hand-tighten it to prevent cross-threading, and finally, use a wrench for a snug fit. This method ensures an effective seal and prevents coolant leaks, which can improve engine efficiency and reduce the risk of damage.
  • Question: What are the potential issues if the Coolant Air Bleeder Screw is faulty?

    Answer: A faulty Coolant Air Bleeder Screw can lead to several issues, including coolant leaks, overheating, and reduced engine performance. If the screw does not seal properly, air may re-enter the cooling system, negating the benefits of bleeding out trapped air. This can cause the engine to run hotter than normal or lead to more severe engine damage over time. For instance, if you're noticing fluctuating temperature readings on your dashboard, it may be a sign to check the integrity of this screw.
  • Question: Can I reuse the Dorman 902-404 Air Bleeder Screw?

    Answer: While it is possible to reuse the Dorman 902-404 Air Bleeder Screw, it is generally not recommended if the screw shows signs of wear, damage, or corrosion. A compromised air bleeder screw can lead to coolant leaks or improper venting of air, which can ultimately affect your vehicle's cooling performance. When doing maintenance, consider replacing it to ensure the integrity of your cooling system and to avoid future issues.
  • Question: What materials is the Dorman 902-404 Coolant Air Bleeder Screw made from?

    Answer: The Dorman 902-404 Coolant Air Bleeder Screw is typically made from high-quality materials, such as durable plastic or metal, designed to withstand heat and pressure in the engine's cooling system. These materials ensure longevity and resistance to wear and corrosion, crucial for maintaining a sealed cooling system. For example, metal screws tend to offer better resistance against engine vibrations and high temperatures, ensuring a longer lifespan compared to cheaper alternatives.
  • Question: How often should I check the Coolant Air Bleeder Screw?

    Answer: It's advisable to check the Coolant Air Bleeder Screw during regular maintenance intervals, particularly when you change the coolant or service the cooling system. Inspect for any signs of wear, cracks, or leaks to ensure optimal performance. Regular checks can help catch issues early, ultimately preventing extensive damage to your engine. Keeping an eye on this small component can make a significant difference in your vehicle's overall health.
  • Question: What tools do I need to install the Dorman 902-404 Coolant Air Bleeder Screw?

    Answer: To install the Dorman 902-404 Coolant Air Bleeder Screw, you typically need a basic socket or wrench set, as well as possibly a pair of pliers. It's also helpful to have a rag on hand to catch any coolant that may spill during the replacement process. Having the proper tools ensures a hassle-free installation, allowing you to secure the screw effectively without damage. Whether you're doing the job yourself or consulting a mechanic, being prepared helps make the task smoother.
  • Question: What are the signs that indicate I need a new Coolant Air Bleeder Screw?

    Answer: Signs that may indicate the need for a new Coolant Air Bleeder Screw include coolant leaks around the screw area, difficulty in bleeding air from the system, or fluctuating engine temperature readings. If you notice any of these symptoms, it could mean the screw is faulty and not sealing properly. It's important to address these issues promptly because they can affect engine performance and longevity, potentially leading to further complications down the line.
  • Question: Where can I buy Dorman 902-404 Coolant Air Bleeder Screw in Sint Maarten?

    Answer: You can purchase the Dorman 902-404 Coolant Air Bleeder Screw at Ubuy, a reputable online marketplace that offers a wide selection of automotive parts. Ubuy specializes in providing quality products and convenient shopping options tailored to the needs of car enthusiasts and everyday drivers alike. Simply visit the Ubuy website, search for the Dorman 902-404 Coolant Air Bleeder Screw, and follow the purchase instructions for swift and easy access.

Dorman Wheel Cylinder Bleeder Screws Editorial Review

Dorman 902-404 Coolant Air Bleeder Screw offers a solid solution for your vehicle's cooling system needs. Made from durable metal, these screws are not only designed for easy installation but also come with new o-rings, ensuring reliability. Reviews highlight the importance of avoiding over-tightening to prevent stripping, while the overall fit and quality surpass factory options. With dimensions of 1.2 x 2.8 x 2.8 inches, this bleed screw is lightweight at 22.68 g and partially threaded for versatile use. Many users have reported successful installations with no issues over extended periods, making this a dependable choice for automotive enthusiasts.

Customer Reviews & Ratings

435 customers ratings
  • 5 Star
    76%
  • 4 Star
    11%
  • 3 Star
    7%
  • 2 Star
    2%
  • 1 Star
    4%

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Pros

  • Includes new o-rings for secure sealing
  • Easy to install and fits perfectly
  • Better quality than factory screws
  • Durable metal construction, reliable performance
  • Lightweight design for easy handling

Cons

  • Plastic composition may require careful handling

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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

ANG 25

ANG 29

Order now and get it around Friday, October 09

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Exact fit and function of the original equipment screw
  • Durable materials designed for high temperatures and pressures
  • Cost-effective solution to meet OE standards
  • Quality tested for a quality fit and long service life
  • Make sure to verify fit with garage tool before purchase

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