Guides for Mercedes-Benz & BMW parts buyers
How to identify the right part before you order it, what fails first on the systems that come through a workshop most often, and what to ask a supplier before you send money. Written for workshops, distributors and online sellers — no filler.
Identification
2 guidesWhat the digits actually mean, why one part carries three different numbers, and how to order the right one the first time.
What the letters and numbers mean on both marques, where to find the code on the car, and a lookup table of the generations most workshops see.
Diagnosis
3 guidesThe symptoms that actually point at a mount, the ones that do not, why they fail in pairs, and the one step people skip that causes a comeback.
How to tell which of the three has failed from the symptom alone, why a new compressor dies without a leak fix, and the order to diagnose in.
Why plastic and heat cycles decide the failure order, what to replace while the system is already open, and the bleeding mistake that cooks a new water pump.
Sourcing
2 guidesThe four words sellers use to describe the same component, which of them are legally defined, and the three questions that tell you what you are really buying.
MOQ, samples, freight, HS codes and payment terms — the practical sequence for a workshop or distributor buying from Guangzhou for the first time.
Still not sure which number you need? Send us the VIN or a photo of the old part — request availability and price.