| Fitting position | upper |
| Supplementary article/supplementary info | with gasket/seal |
| Operating mode | hydraulic |
| Bolt head-/nut design |
|
| Driven units |
|
Expresslevering
| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Manufacturer | Productnumber |
| MINI | 1131 7 797 901 , 11317797901 |
| MINI | 1131 8 490 219 , 11318490219 |
| MINI | 1131 8 576 201 , 11318576201 |
| MINI | 1131 8 586 699 , 11318586699 |
| BMW | 1131 7 797 901 , 11317797901 |
| BMW | 1131 8 490 219 , 11318490219 |
| BMW | 1131 8 576 201 , 11318576201 |
| BMW | 1131 8 586 699 , 11318586699 |
| Usage numbers |
| 502 631 001 |
| HP502 631 |
| 4063926184410 |
| 4063926296687 |
The Tensioner, timing chain (502 631) stabilizes timing chain tension for accurate valve operation. A Porza tensioner restores proper timing control and protects the engine.
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.