Navegando por eBay he visto esta tabla de equivalencia y por lo que veo es cierto que todos los Opel usan el mismo sensor de presión de aceite (alias bellota).
Vauxhall Part Number: 90337695
Applications:
Calibra 1989-1997; All models, From Chassis numbers S1000001- S9000001 -
Please note for Additional Instruments,
Nova 1983-1992; Engine codes: 12S, 12ST, 12NV, E12GV, 13S, E16SE, C16SE, From Chassis numberK4000001-
14NV, All Models, Please note for Additional Instruments,
Astra MK2 1985-1993; All Models, From Chassis numbers J2791968- 5273429- JE215466-
Use with LCD Instruments,
Frontera A 1992-1998; Engine codes: C20NE, X20SE, X22XE, C24NE, 23TD, 25TD
Frontera B 1999-2004; Engine codes: X22SE, Y22SE
Carlton A 1987-1993; All Models, (Except 30NE) From Chassis number K1000099-
Use with LCD Instruments,
Senator 1988-1994; Engine codes: C30LE, C30NE, From Chassis number K1000099-
Engine Codes: C26NE, C30SE All Models,
Use with LCD Instruments
http://cgi.ebay.co.uk/Vauxhall-Oil-Pres ... 240%3A1318