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Frequently Asked Questions

1. About the Dena Channel

Many users are unfamiliar with the procurement and service channels for Dana products, and typically have two options: purchasing through original equipment manufacturers or searching online. At present, Dana’s off‑highway systems operate four service centers in China, which sell genuine spare parts and provide standard maintenance services. These service centers are subject to dynamic management—those that meet the required standards remain, while those that do not are removed. If you need to verify the authenticity of a service center, you can contact Dana Wuxi DC at 0510‑66687288 for confirmation.

 

2. Identification of Aftermarket Spare Parts

As the Dao rises one foot, the demon rises ten. This is indeed becoming increasingly difficult to detect. However, Dena Company will continue to introduce advanced anti-counterfeiting technologies. Based on our many years of experience, “it’s not fear of not recognizing the genuine product—it’s fear of comparing one product to another.” Even so, authenticity can still be identified through packaging, appearance, color, and precision—thanks to our access to authentic items for comparison. Going forward, should any customer have such needs, Yihaowei Company stands ready to assist.

 

3. Warranty and Scope

Dana provides a comprehensive warranty for its products, covering three levels: 1) a warranty on the complete unit (torque converter assembly, transmission assembly, and drive axle assembly); 2) a warranty on replacement parts; and 3) a warranty on repair services.

 

For the first part, the warranty period is 1+1—meaning one year or 2,000 operating hours, whichever occurs first. If the complete assembly remains uninstalled and unused after delivery, it may be stored in inventory for up to one year, after which a further one-year or 2,000-hour warranty will apply. However, during the period of inventory, the user is required to perform “necessary” maintenance on the assembly, with verifiable proof of such maintenance serving as the key criterion.

 

For the second part, the warranty period is six months or 1,000 operating hours, whichever occurs first. However, this applies only to non‑wear parts such as gears, pumps, valves, and housings. Wear parts—including friction linings, rubber components, elastomeric discs, and bearings—are expressly excluded from this coverage.

 

Part Three: This section covers assemblies that have undergone repair, overhaul, or modification at the service center. Dana’s warranty period is six months or 1,000 hours, as specified in the instruction manual. For special requirements, please consult with the service center.

 

4. Delivery Time

For assembled components, execution generally follows the terms of the contracted order. For spare parts in Dana’s product portfolio, a three-tier inventory model is employed: global plant inventories, global distribution center inventories, and service‑center inventories. Given the wide variety and relatively high value of these spare parts, even with this three-tier system, it is rarely possible to maintain stock on hand for every individual item. Overall, this three-tier approach can satisfy approximately 90% of customer demand. Occasionally, ordering certain specific parts may take a considerable amount of time, typically ranging from 3 to 18 months.