| Length (mm) | 241 |
| Piston rod length (mm) | 15 |
| Internal thread size | m16 x 1,5 |
| External thread size | m10 x 1,5 |
| Stroke (mm) | 65 |
| Parameter | typ 24 / 30 |
| Brake type | disc brake |
| Rod/strut | coupling rod |
| Thickness (mm) | 61 |
| Spanner size | 15 |
| Thread length (mm) | 21 |
| Supplementary article/supplementary info |
|
| Fitting position |
|
| Weight (kg) | 0.340 |
| Material | steel |
| Distance between fastening bolts (mm) | 120 |
Expresslevering
| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Manufacturer | Productnumber |
| VOLVO | 21752601 |
| BMW | 31 35 1 124 380 , 31351124380 |
| BMW | 31 35 1 127 194 , 31351127194 |
| BMW | 31 35 1 128 050 , 31351128050 |
| BMW | 31 35 1 130 075 , 31351130075 |
| BMW | 31 35 1 134 582 , 31351134582 |
| Usage numbers |
| FE04585 |
| 04585 |
| 4 |
| 02782E+12 |
| 4081276045854 |
The Diaphragm Brake Cylinder (04585) converts air pressure into braking force using a flexible diaphragm, ensuring smooth and reliable brake application. Replacing a worn or leaking cylinder restores full braking power and prevents air loss or delayed response.
With Porza’s smart search, you can easily find the correct diaphragm brake cylinder for your vehicle using your license plate, VIN, or detailed vehicle information. Choose Porza for quality parts, fast delivery, and dependable service.
Febi Bilstein is a globally respected manufacturer and supplier of high-quality replacement parts for passenger cars and commercial vehicles. With over 175 years of automotive expertise, Febi stands for reliability, innovation, and German engineering precision. The brand offers an extensive product range of more than 47,000 items, covering steering, suspension, braking, engine, drivetrain, and electrical systems.
Every Febi component meets or exceeds OEM standards, ensuring optimal fit, performance, and durability. Their in-house production and strict quality control guarantee parts that professionals trust worldwide. Febi Bilstein is also a pioneer in the aftermarket, being one of the first to offer parts with full OE-matching quality outside the dealership network.
Whether you're servicing a modern European vehicle or maintaining a heavy-duty truck, Febi provides reliable solutions with fast availability and long-lasting performance. Choose Febi Bilstein for precision-made parts backed by generations of expertise and a commitment to quality.
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.