Master overhaul kit for the Nissan RE4F04B four-speed automatic transaxle: frictions, steels, gaskets and seals to rebuild Altima and Maxima 3.0L/3.5L units.
If your 2000-2004 Nissan Maxima or 2003-2004 Altima 3.5L has lost third gear after a kickdown, flares on the 2-3 under heavy throttle, or slips hot with burnt fluid in the pan, the RE4F04B is due for a full teardown. This master rebuild kit (manufacturer part number BL-I12D0260) supplies the friction plates, steel plates and overhaul gasket and seal set to put the Jatco four-speed behind the VQ V6 back together with fresh clutch packs and every drum resealed.
The RE4F04B is the reinforced, large-case version of Nissan's Jatco RE4F04A four-speed transaxle. It shifts with clutch packs and a 2-4 band, applied by line pressure that only holds as long as the piston seals and sealing rings do. Over time the frictions glaze and the rubber hardens, so apply pressure bleeds off, the packs slip and the clutch material ends up in the filter and valve body. A master kit replaces both halves of that problem at once: the wear surfaces that transmit torque and the seals that hold the pressure that clamps them.
Check fluid level and condition first, then pull codes. A solenoid or pressure-control code with clean fluid often points to the valve body or its ground eyelet rather than the clutches, and that repair stays in the car. If the fluid is burnt and the slip shows up in specific gears, work through our transmission slipping diagnosis guide and a line pressure test from our pressure testing guide. Low pressure in one range with normal pressure elsewhere tells you which circuit is leaking before the case comes apart.
The listing covers the RE4F04B in the 2000-2004 Nissan Maxima 3.0L and 3.5L and the 2003-2004 Altima 3.5L. Identify the unit before ordering. TransGo's identification sheet separates the two versions by the harness: on the RE4F04B the internal solenoid wiring stays inside the case and exits through a black connector, while RE4F04A and V units have a tan connector and the harness extends outside the case. If your unit is an RE4F04A, use our RE4F04A master rebuild kit instead. Plate counts can vary by build year, so lay the old packs next to the new ones during teardown, or send us your year and VIN and we will confirm the match. More units are listed in our rebuild kits collection.
If the valve body bores are worn as well, pair the rebuild with our RE4F04B valve body so the new clutches get correct pressure from day one.
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The listing covers the 2000-2004 Maxima 3.0L and 3.5L with the RE4F04B. Confirm the unit has the black harness connector through the case (RE4F04B) rather than the tan connector of the RE4F04A, or send us your VIN.
The B is the reinforced large-case version. TransGo identifies it by the solenoid harness, which stays inside the case on the B and exits through a black connector. The A and V versions use a tan connector with the harness running outside the case.
Usually. TransGo ties no third after a 3-2 or 4-2 kickdown to a leaking direct clutch inner piston seal. That seal is inside the drum, so fixing it means a teardown, which is when a master kit makes sense.
No. It carries friction plates, steel plates and the overhaul gasket and seal set. Drums, bushings, the pump, the converter and the valve body need to be inspected and replaced separately if worn.
Nissan Matic fluid. Matic D was the original fill on these units, and Nissan Matic S is the current service fluid Nissan supplies for them. Check the level hot after the first drive.
