Transfer case chain (W639 Vito, Viano)
Original price was: €450.€380Current price is: €380. (Net: €299,21)
3 in stock
Description
How do I know if my Mercedes W639 transfer case chain needs replacing?
Common symptoms include a clicking or popping noise under acceleration, jerky movement when the 4×4 system engages, or a ‘jumping’ sensation. This usually happens because the chain has stretched over time and is skipping teeth on the internal gears.
Does this chain fit both the Mercedes-Benz Vito and Viano W639 models?
Yes, this transfer case chain is specifically designed for the W639 chassis, which includes both the Vito and Viano 4Matic models. It ensures the correct power distribution between the front and rear axles for these specific vans.
What causes the transfer case chain to stretch in my W639?
Chain stretch is typically caused by high mileage, heavy towing, or aggressive driving. If the transfer case oil isn’t changed at regular intervals, increased friction can also accelerate wear on the chain links.
Can I replace just the chain, or do I need a whole new transfer case?
In many cases, replacing just the chain is a cost-effective way to restore the 4×4 functionality, provided the internal gears (sprockets) are not damaged. We recommend a full inspection of the casing and bearings during the repair.
Is this chain compatible with the older W638 models as well?
While the W638 is listed in some general categories, you should verify your specific transfer case model. This chain is optimized for the W639 4Matic systems. Always check your vehicle’s production year and drive type before installation.
Additional information
| Weight | 1,630 kg |
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