VDO A2C59513652-S Viewline Ivory 40 PSI Water Pressure Gauge, 12V

Bezel sold separately.  Bezels that are compatible:

A2C53186027-S Black Round

A2C53186024-S Black Triangle

A2C53186028-S White Round

A2C53186025-S White Triangle

A2C53186029-S Chrome Round

A2C53186026-S Chrome Triangle