| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Usage numbers |
| RG1003 |
| 1 987 470 603 |
| 1.987.470.603 |
| 4 |
| 04703E+12 |
The Guide Sleeve Kit, brake caliper (1 987 470 603) restores smooth caliper movement and ensures even pad pressure during braking. Replacing worn sleeves prevents drag, noise, and uneven pad wear. Use Porza’s smart search to find the correct kit.
Bosch – Quality and Innovation in Car Parts
Bosch is a globally recognized leader in automotive technology and car parts. Founded in Germany in 1886, the brand has built a strong reputation for reliability, technical innovation, and premium-quality products for over a century. The Bosch Car Parts division offers an extensive range of components for both passenger cars and commercial vehicles, compatible with nearly all makes and models.
The product range includes brake systems, spark plugs, batteries, wiper blades, filters, sensors, and electronic components. Bosch is also a market leader in engine management systems and vehicle electronics, including ABS, ESP, and fuel injection systems. Every part is manufactured to the highest OEM standards and undergoes rigorous quality control to ensure performance and safety.
A brake caliper guide sleeve kit is a set of components designed to restore the sliding mechanism of a floating brake caliper. It typically includes guide sleeves (bushings), rubber bellows (protective boots), and sometimes lubrication grease. These parts ensure smooth and controlled movement of the caliper along the guide pins, allowing even pressure distribution on the brake pads and consistent braking performance.
Key specifications include inner and outer diameter of the sleeves, length, material composition (metal or high-performance polymer), and compatibility with the guide pins. The included rubber bellows are usually made from EPDM rubber, resistant to heat (150–200°C or higher), brake fluid, and environmental exposure. Tight tolerances and low-friction properties are essential for proper sliding function and durability.
Replacement is recommended when there are signs of sticking calipers, uneven brake pad wear, noise, or visible damage to the sleeves or bellows. Worn or contaminated guide components can restrict caliper movement, reducing braking efficiency. The kit is often replaced during brake service or caliper overhaul to restore proper operation.
Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the guide sleeve kit matches your specific brake caliper design and dimensions, reducing the risk of incorrect fitment.
Porza provides high-quality brake components with fast delivery across Europe. Customers can order online or choose in-store pickup in the Netherlands, Germany, or Belgium. This ensures quick access to essential parts for both professional workshops and individual users.
If you select the fit guarantee, Porza verifies compatibility before shipment. If the product does not fit or meet expectations, it can be returned according to the return policy. This ensures a reliable and hassle-free purchasing experience.