PISTON MAIN-RELIEF (Nissan NI12N53-82291)

A worn main relief piston can cause unstable system pressure during operation. This aftermarket replacement part references Nissan catalog number NI12N53-82291. The piston functions as a moving component within a pressure-regulating valve assembly. Its plain mechanical role is to shift position in response to fluid force, thereby controlling flow path opening. A common generic failure consequence is erratic pressure spikes that may lead to component fatigue or leakage. The item ships at approximately 0.088 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: NI12N53-82291, ni12n53-82291, NI12N5382291, ni12n5382291