When you buy trailer parts, you should consider the warranty and be lucidly familiar with the exclusions or exemptions. Every warrant has exclusions or exemptions. The warranty applicable to your trailer would also have such clauses. It is not ideal for consumers but this is the standard practice across industries. Trailer parts can be replaced if they are faulty or defective. You must be able to establish that the manufacturer or re-seller was responsible for the damaged part. You should not be responsible for the faulty part. Many people commit mistakes while handling trailer parts, especially while installing them. Any improper installation method or using wrong materials to complete the process can damage trailer parts and in such cases the warrant would be inapplicable or void. No manufacturer takes responsibility of third party enabled damage to its products.
Beyond the manufacturing defects or operational problems owing to no fault of yours, there are some grounds that would be covered by the warranty but many will be exempted. For instance, some trailer parts may have rust proof warranty. The company making the part or the re-seller from whom you buy it will claim that the material will not rust in due course of time. There may or may not be any time-frame for such rust proofing but it is usually two to three years at least. Of course there cannot be a warranty in perpetuity. While the rust proof clause is a reliable coverage in a typical warranty, there will be some exemptions such as loading a trailer or exposing the part to corrosive material. If a trailer owner exposes the parts to corrosive material of any nature and that damages the component to an extent where rust is facilitated, then the warranty would not be applicable.
There are many such exclusions that you must know. Most manufacturers will not provide any warranty if the trailer parts are damaged in accident or due to mishandling, improper installation or using supporting components that are not of the same standard. Every part or component is compatible with certain models. You cannot use parts that are not compatible with one another. Doing so will not only risk the voiding of the warranty on your trailer parts but also on the trailer. You should not use incompatible parts for your trailer. Speak with the manufacturer if you want so you can be sure of this. You may also consult an expert technician before choosing trailer parts.