Please consider PSB15-160 - 160# Back Mount Gauge 1/8" PSB15-160 as a replacement.
160 PSI max pressure gauge. This air compressor pressure gauge will work with any standard pressure switch or air import with 1/8" threads. Back mount gauge has the threads on the back instead of the bottom of the switch.
Part #: PSB20
Part #: PSL16-8
Part #: ST25-150
Part #: 142-1003
Part #: 142-1002