The Dorman 902-404 coolant air bleeder screw is presented as an OE-style replacement, made from alloy steel, UNC-threaded for a secure fit, and rated to resist high temperatures and pressure. Readers are shown precise specs: standard UNC thread, common sizes used on many GM and import systems, and typical length ~12–15 mm depending on application. How does it perform in fitment, leak reduction, and ease of installation?
Key Takeaways
- Reliable OE-style coolant air bleeder screw made from alloy steel, designed for high heat and pressure resistance.
- Fits vehicles with UNC right-hand 1/4″ thread; verify fit with vehicle info or garage tool before purchase.
- Users rate it 4.6/5 (399 reviews), citing correct OEM fit, quiet operation, and fewer leaks.
- Installation is straightforward but requires cleaning mating threads and torquing to spec for proper seal.
- Backed by Amazon 30-day return guarantee and OEM cross-references 17111712788, 11537793373, 5184979AA.
Product Specifications and Materials
A concise summary of specifications helps determine whether the Dorman 902-404 Coolant Air Bleeder Screw suits a given repair or maintenance task.
The component uses alloy steel emphasizing material strength for temperature and pressure resistance. Thread design is Unified National Coarse (UNC), right hand, providing reliable engagement.
Alloy steel construction for heat and pressure resistance, with right-hand UNC threads for dependable, secure engagement.
Specifics: weight 0.8 ounces (22.68 g), diameter 0.25 inches, head style fillister.
Practical considerations: will it withstand high cooling-system heat and repeated cycles?
Q: Is this a durable OE-style replacement?
A: Yes, tested for fit and material wear.
Notes: check vehicle-specific fitment tools before purchase.
Compatibility and Fitment Details
Fitment accuracy is central when replacing cooling-system hardware; the Dorman 902-404 Coolant Air Bleeder Screw is intended as an OE-style replacement and requires vehicle-specific verification before purchase. It suits select models, UNC right-hand threads, 0.25 in diameter, 0.8 oz. How to confirm? Enter vehicle info in the garage tool; look for the confirmed fit indicator, hover the “i” for notes. Installation tips: clean mating threads, torque to spec, inspect for leaks. Practical considerations: OEM numbers 17111712788, 11537793373, 5184979AA, thread pitch, access space, tool clearance.
| Emotion | Fit |
|---|---|
| Relief | Confidence |
| Caution | Precision |
| Ease | Assurance |
Customer Experience and Warranty
Several dozen reviewers highlight reliability and ease of installation when describing the Dorman 902-404 Coolant Air Bleeder Screw.
Several dozen reviewers praise the Dorman 902-404 for reliability and easy installation
Readers note customer satisfaction: 4.6/5 from 399 ratings, durable alloy steel, 0.8 ounces (22.68 g), UNC thread, 0.25 inch diameter.
What do buyers report? Quiet operation, correct OEM fit, fewer leaks.
How is support handled? Amazon.com Voluntary 30-Day Return Guarantee offers basic warranty benefits and return logistics.
Practical tips: confirm fit with the garage tool, check OEM numbers 17111712788/11537793373/5184979AA, inspect threads before installation, keep purchase receipts for claims.
Frequently Asked Questions
Will This Bleeder Screw Resist Corrosion in Coastal Environments?
Salt-surely sceptical, statements show: the screw offers moderate corrosion resistance and reasonable coastal durability due to alloy steel construction and testing, but prolonged salt exposure may still cause corrosion—additional coatings or stainless alternatives are preferable for seaside use.
Can I Use It With Aftermarket Radiator Caps?
Yes. He notes aftermarket compatibility depends on matching thread, seat and radiator pressure ratings; if cap and bleeder share UNC thread size and system pressure specs align, the bleeder can be used safely. Verify fit and ratings.
Is Any Thread Sealant or Anti-Seize Required During Installation?
No, thread sealant isn’t typically required; 4.6 out of 5 users report trouble-free installs. For installation tips, hand-start threads, torque to spec, avoid excess thread sealant, and apply anti-seize sparingly if metal galling risk exists.
Does the Screw Come Packaged With Installation Instructions?
No, the screw typically ships without printed installation instructions; packaging details note only part identification. The reviewer recommends consulting vehicle service manual and online installation tips for proper seating, thread sealing advice, and torque specifications before fitting.
Can It Be Used on Motorcycles or ATVS as Well?
Yes — but with caution. He wonders if motorcycle compatibility or ATV applications truly match; fit depends on thread, size and vehicle specifics. Verification via the garage tool or OEM numbers is recommended before installation.
