Genuine HKS turbo timer Fake HKS turbo timer
Unit’s connector is small in the center with a gap around(see picture) Unit’s connector is on the top and the bottom has a gap(see picture)
Genuine vs Fake HKS turbo timer

Genuine vs Fake HKS turbo timer

Genuine HKS SSQV 1/2/3/4 blow off valve Fake HKS SSQV 1/2/3/4 blow off valve
Large box(3 times the size of the BOV) HKS logo is perfect written and engraved and opalesce in the light. Small box(in the size of the BOV) HKS logo is well written and engraved and not opalesce in the light.
Genuine vs Fake HKS SSQV 1/2/3/4 blow off valve

Genuine vs Fake HKS SSQV 1/2/3/4 blow off valve