How to spot a Fake Relay
Counterfeit horn using Bosch brand name
You get what you pay for.
More than product quality and durability, you are buying vehicle uptime (for the end-user) and good company image (for the talyer and diesel shop). A P100 quick repair savings versus a P100,000 backjob bill down the road.
There are many reasons why fakes and replacements are priced lower than genuine Bosch and Zexel parts.
Like what your father always say, "if the price is too good to be true..."
More Read Obet's take on imitation parts, forty years ago.