• Push belt slippage & pulley fracture
  • Chatter on acceleration
  • RPM surge on acceleration


Excess wear of the secondary pressure regulator valve train and bore will result in uncontrolled secondary pulley pressure deviations causing timing issues and slippage between secondary and primary pulleys.


Restore proper hydraulic control by refurbishing the bore oversize, and replacing worn valve train components with the Sonnax oversized valve kit.

JF011E (RE0F10A)

Oversized Secondary Pressure Regulator Valve Kit
Part No. 113741-21K

You need this if... View Instructions

In Jatco/Nissan JF011E (RE0F10A) units, the secondary pressure regulator valve supplies and maintains oil pressure in the secondary pulley circuit as commanded by the secondary pressure control valve. A worn bore or valve spool can cause loss of oil pressure control in the secondary pulley circuit. Symptoms that may indicate degraded secondary pulley pressure control are: push-belt slippage and pulley fracture, chatter and/or RPM surge upon acceleration.

Reconditioning the bore and installing Sonnax oversized secondary pressure regulator valve kit 113741-21K can restore optimal oil pressure management in the secondary pulley circuit.

  • Hardcoat anodized aluminum valve combats premature wear
  • Oversized valve paired with OE spring matches OE pressure regulation function.

OE secondary pressure regulator valves have four spools. The smallest spool serves no function. Sonnax's oversized valve has only three function spools.

  • Valve
  • End Plug
  • 113741 21k combo
  • 113741 21k

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

  • 113741 21k test