Oil Seal Rear Main (CDI) (Mercedes-Benz C-Class W202 / W203 / W204 / M-Class W163 / Sprinter / Viano/Vito W639) is designed to seal the rear main crankshaft area, preventing oil leaks where the crankshaft exits the engine block. This crucial component helps maintain proper engine lubrication and protects against contamination from dirt and debris.
This specific oil seal fits multiple Mercedes-Benz models, including the C-Class series W202, W203, and W204, the M-Class W163, as well as Sprinter and Viano/Vito models W639. Its rear position makes it important to accurately match the part to your vehicle model to ensure compatibility.
When replacing this seal, buyers should compare their original part’s size and fitment location carefully. Oil seal failure can lead to oil leaks that may cause engine damage if left untreated. Ensuring the replacement matches the vehicle’s specifications helps maintain engine integrity.
- Rear position seal for the main crankshaft area
- Suitable for a range of Mercedes-Benz models including C-Class and M-Class
- Part SKU: BB-251635 for reference
Choosing the correct oil seal involves confirming the vehicle make, model, and engine configuration. If uncertain, consult a parts specialist to confirm fitment before purchasing or use the available enquiry options to request further help.
Need help matching this item to your vehicle? Use more Oil, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.





