| Weight | 0.01 kg |
| Length (mm) | 16.0 |
| Thread size | m6 |
| Overall length (mm) | 31.5 |
| Spanner size 1 (mm) | 7 |
| Weight | 0.01 kg |
Expresslevering
| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Manufacturer | Productnumber |
| FORD | 0605305 |
| ALFA ROMEO | 10541.12050.01/07 , 105411205001/07 |
| MERCEDES-BENZ | 000 420 10 55 , 0004201055 |
| MERCEDES-BENZ | A 000 420 10 55 , A0004201055 |
| BMW | 34 21 9 023 168 , 34219023168 |
| MAN | 81.50406.0003 , 81504060003 |
| NSU | 56 49 00 904 , 564900904 |
| PORSCHE | 928 351 945 03 , 92835194503 |
| STEYR | 480 23 0724 , 480230724 |
| VAG | 211 611 477 , 211611477 |
| VAG | 411 611 475 , 411611475 |
| BUESSING | 90 810 522 350 , 90810522350 |
| HANOMAG | 780 928 916 , 780928916 |
| HANOMAG | 780 983 583 , 780983583 |
| HENSCHEL | 983 583 , 983583 |
| Usage numbers |
| 390329 |
| 03.3518-0100.2 |
| 4 |
| 00663E+12 |
The Breather Screw/Valve (03.3518-0100.2) secure critical vehicle components under precise clamping force. Replacing them with Porza-quality screws restores fastening strength and mechanical reliability.
Use our vehicle compatibility checker or enter your car’s make, model, and year to confirm fitment. If you’re unsure, contact our support team for assistance. Or, for extra peace of mind, purchase our 100% Fitment Guarantee service at checkout.
While some parts are DIY-friendly, others may require professional installation. Check the product manual or consult a mechanic if unsure.
Most installations only require basic tools, but some may need specialty tools. Check the product details or installation guide for recommendations.
We offer both OEM and high-quality aftermarket parts. Each product listing specifies whether it's OEM or aftermarket.
The materials vary by product but are always designed for durability and performance. Check the product details for specific material information.
Most orders are processed within 24 hours and delivered within 2-5 business days. Expedited shipping options are also available at checkout.
We accept returns within 30 days of delivery, provided the item is unused and in its original packaging. Visit our Returns page for more details.
Yes! Most of our parts include a manufacturer warranty. Check the product details for specific coverage information.