RE4F04A Valve Body 1992-2000, remanufactured and ready to install. Fits the RE4F04A. Ships fast from the USA.
A Nissan Maxima, Altima or Infiniti I30 running the RE4F04A - sold under Jatco's later naming as the JF403E - that shifts harsh, slips before a gear catches, hangs on the 1-2 upshift, or over-speeds briefly on the 2-3 shift is usually dealing with a worn valve body rather than worn clutches. This remanufactured RE4F04A valve body is built for 1992-2000 applications and bolts in as a direct replacement for the factory unit.
The RE4F04A is an electronically controlled 4-speed automatic, and its valve body carries the shift solenoids and torque converter lockup solenoid that the transmission control unit fires to route line pressure and time every shift. Transmission Digest has documented a known shift concern on 2000-up RE4F04A and related RE4R01A units - a slightly delayed 1-2 upshift followed by a quick over-speed on the 2-3 shift - and that kind of fault traces back to valve body wear rather than the computer or wiring, since the control unit is still sending the correct command.
Scan for codes first, since a shift solenoid or TCC code points directly at the valve body, and check the fluid before anything else - low or burnt fluid causes the same harsh-shift and slip symptoms and is a cheaper problem to rule out. TransGo's identification guide for this unit notes that Nissan and Jatco built this valve body in more than one configuration - A and B body castings, on-off versus PWM lockup control - across its production run, so a code-reader result should be paired with a look at your actual casting before you assume you need the whole valve body.
This valve body is built for the RE4F04A - also sold as the JF403E under Jatco's later naming - as used in the Nissan Maxima, Altima and Infiniti I30 across 1992-2000. Nissan and Jatco revised the valve body casting and lockup control during that span, so match the casting marks and solenoid connector on your old unit before ordering, or send us your year, model and VIN and we will confirm the correct revision. Our RE4F04A valve body for 1993-2000 and general RE4F04A valve body listings cover the adjacent and broader ranges if this one does not match your casting.
Drop the pan and change the fluid and filter at the same time as the valve body, since debris from the old unit will otherwise recirculate through the new one. If the TCC solenoid on the old unit tests weak, replace it while the valve body is already out - our RE4F04A TCC solenoid is sold separately for exactly that. Have the fluid pump checked against spec if it is original; our RE4F04A pump is worth replacing alongside the valve body if its output is marginal. Clear codes and run the adaptive shift relearn after the swap.
| Fits | RE4F04A 1992-2000 |
| Part type | Valve Body |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Nissan Maxima, Altima and Infiniti I30 applications that ran the RE4F04A, which Jatco later renamed the JF403E.
A documented shift concern on RE4F04A and related RE4R01A units where the 1-2 upshift is slightly delayed and the engine briefly over-speeds right after the 2-3 shift - it traces back to the valve body, not the wiring or computer.
Nissan and Jatco revised the valve body casting and lockup control during that span, so match the casting marks and solenoid connector on your old unit, or send us your year, model and VIN to confirm.
A shift solenoid or torque converter clutch code stored in the control unit points directly at the valve body.
If it tests weak, yes - replace it while the valve body is already out rather than pulling the transmission apart again later.
Yes - clear codes and run the adaptive shift relearn so the control unit re-times clutch fill against the new valve body.
