Rare Parts › HKS Japan 2.5bar (36PSI) Boost Gauge Image 1 of 3 Image 2 of 3 Image 3 of 3 HKS Japan 2.5bar (36PSI) Boost Gauge $170.00 Untested, appears to be in great condition.Comes with all wiring pictured. Add To Cart Added! Untested, appears to be in great condition.Comes with all wiring pictured.