Genuine Nissan brake booster check (one way) valve.

This valve connects between the inlet manifold and brake booster.

Barb size: 9.5mm (3/8")

Application:
S13 Silvia
RPS13 180sx "Years: 03/1989 - 07/1996"
S14 Silvia 200sx "Years: 07/1994 - 07/1996"
R32 Skyline
R32 Skyline GTR
Z32 300ZX (Years: 07/1989 - 07/1996)
A31 Cefiro
C32 Laurel (CA18S) "Years: 10/1986 - Onward"
C32 Laurel (RB20E)
C32 Laurel (RB20DT)
C32 Laurel (VG20T)
C32 Laurel (LD20)
C32 Laurel (RD28)
C33 Laurel
D21 Navara (SD25) "Years: 09/1985 - 10/1987"
N14 Pulsar "Years: 12/1992 - 08/1993"
N15 Pulsar "Years: 08/1995 - 07/1996"
R50 Pathfinder "Years: 09/1995 - 07/1996"
Y60 Patrol (RB30S) "Years: 09/1988 - 07/1996"
Y60 Patrol (TB42S)
Y60 Patrol (TB42E) "Years: 08/1993 - 07/1996"
Y60 Patrol (RD28T) "Years: 10/1994 - 07/1996"
Y60 Patrol (TD42) "Years: 08/1987 - 07/1996"