JF016E and RE0F10D CVT oil pump assembly with valve for Nissan Altima and Rogue, replacing OE 31340-28X8A when line pressure drops.
A 2.5L Nissan Altima or Rogue that flares RPM when you step on it, takes a beat to move after you select Drive on a cold morning, or slips more the hotter the fluid gets is often a CVT that has lost line pressure. In the Jatco JF016E, which Nissan codes RE0F10D, the oil pump is where that pressure starts. This is a complete oil pump assembly with the valve installed, replacing OE numbers 31340-28X8A and 31340-28X0A, for the shop or owner who has the unit apart and has traced low pressure back to the pump.
The JF016E belongs to the Jatco CVT8 family. Jatco says it reworked roughly 300 parts for this generation and fitted a smaller oil pump to cut friction, paired with a lower-viscosity fluid. That smaller pump still has to feed everything: the pressure regulator turns its output into line pressure, the pulley reducing valves turn line pressure into the force that squeezes the steel push belt between the primary and secondary pulleys, and the same supply applies the forward clutch and reverse brake. There is very little reserve. When the pump gears wear, or the flow control valve in the pump body sticks or wears its bore, output falls off first at idle and with hot, thin fluid, which is exactly when owners notice a problem.
Sonnax ties wear at the JF016E pump flow control valve directly to push belt slippage, delayed engagement and low pump volume, and sells replacement valves for that bore. A new assembly with the valve already in place removes the guesswork of reusing a worn pump body.
Low pressure has more than one cause in this unit. A worn main pressure regulator bore in the valve body or a weak line pressure solenoid produces the same complaints, so check fluid level and condition, read codes, and compare commanded against actual pressure before you condemn the pump. Our CVT harsh or delayed shifts walkthrough lays out the test order, and the Jatco CVT Nissan problems guide covers the patterns these units fail in. With the unit on the bench, inspect the pump gears and pocket for scoring and vacuum test the flow control valve bore. If the valve body tests bad instead, a JF016E valve body is the right repair.
This pump is listed for the JF016E (RE0F10D) in the Nissan Altima and Rogue with the 2.5L engine, and it carries JF017E and JF015E references. Treat those references with care: the JF017E is the chain-drive 3.5L version and the JF015E is a smaller unit, so do not assume interchange. Match the OE number on your old pump or the code on the transmission tag to 31340-28X8A or 31340-28X0A, or send us your year and VIN and we will check it before it ships. If your vehicle has the 3.5L V6, look at the JF017E pump instead. All of our Nissan CVT parts are grouped on the CVT transmission parts page.
If the unit is being refreshed while it is out, a JF016E shift kit addresses the valve body wear that usually accompanies a tired pump.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for the JF016E (RE0F10D) used behind the 2.5L in the Altima and Rogue and replaces OE 31340-28X8A and 31340-28X0A. Check the number on your old pump or send your year and VIN so we can confirm before shipping.
Do not assume so. The JF017E is the chain-drive version built for the 3.5L V6. Use the JF017E pump listing for those vehicles.
Both cause low line pressure. Compare commanded and actual pressure, test the pressure solenoid, and with the unit apart inspect the pump gears and vacuum test the flow control valve bore. Valve body bore wear is equally common in this unit.
Genuine Nissan NS-3 CVT fluid. Reset the fluid deterioration counter with a scan tool after the refill.
Pump O-rings, the front seal and anything worn on the converter hub. Inspect the belt and pulley faces, because a new pump cannot hold a belt on scored pulleys.
