Behind the HDK brand is Himeji Daiichi Kogyo, a Japanese company founded in 1986 that began producing constant velocity drives in 1988. They are renowned for their robust product range and strict quality control, having earned ISO9001, ISO9002, and ISO14001 accreditations.

: Another cost-effective alternative with a slightly different numbering and packaging system 姫路第一鋼業 compared to the standard line. 姫路第一鋼業 Do you need help cross-referencing

The HDK catalogue is used daily by professionals and DIYers to find the correct CV joint. The most efficient approach involves verifying both the HDK code and the OEM equivalent to ensure accuracy. A part like the , designed for a Honda with 30 inner teeth, 60 seal diameter, and 26 outer teeth, can be confirmed using the OEM number 44305-SOA-960. The importance of using a catalogue cannot be overstated; for instance, a part like TO057 from the Toyota line must be matched to the specific vehicle to guarantee proper fit and function. When in doubt, relying on these cross-references is the most reliable course of action.