timken is timken where ever you buy it but some bits can be harder to be sure of ,a few years ago buying british co injector nozzles was guarrentee of quality but then some where made abroad and quality wasnt much different than pattern,genuine and oe is usually best except where you know different ,pattern does tend to be poor not just from britpart as big retailers online are in price competetion and so press wholesalers who buy cheaper and quality suffers, i was talking to britpart rep the other day about it ,to get good best price parts you need to talk to retailers like famous four amongst others who know what parts are good or poor and cab advise you,they will sell best bits from all the different suppliers ie timken bearings from britpart and another bit from bearmach,