JR401E, 4N71B, L4N71B, N4A-EL, JR402E, RL4R01A, R4A-EL
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JATCO JR401E and JR402E – 4-speed hydromechanical automatic transmissions developed by the Japanese manufacturer JATCO, designed for vehicles with longitudinally mounted engines and rear-wheel drive (RWD) or four-wheel drive (4WD). These transmissions were used in various passenger cars, SUVs and pickups from Nissan, Infiniti, Mazda, Ford and other manufacturers. Although both belong to JATCO's group of four-speed automatic transmissions, they represent different design families.
JR401E belongs to the earlier 4N71B transmission family, developed on the basis of the three-speed 3N71B design. The L4N71B and E4N71B variants of this group use a four-speed planetary gear mechanism with an overdrive gear, a hydrodynamic torque converter and, depending on the version, hydraulic or electronic shift control. In Mazda vehicles, the N4A-EL designation is associated with this design group.
JR402E belongs to the later 4R01 transmission family, also known by the Nissan RE4R01A / RE4R01B and Mazda R4A-EL designations. This transmission group uses electronically controlled hydraulic gear shifting, planetary gear mechanisms, multi-plate clutches and a lock-up hydrodynamic torque converter. Certain variants feature adaptive clutch pressure control for smoother gear shifts and lower hydraulic losses. One of the later versions is the JR402E-M (RJD), used in Ford Ranger 2.5 l turbodiesel 4x4 models.
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Alternative and related designations:
- JATCO JR401E family: JR401, JR401E, 4N71B.
- Nissan / Datsun (JR401E family): L4N71B, E4N71B.
- Mazda (JR401E family): N4A-EL.
- JATCO JR402E family: JR402, JR402E, JR402E-M, 4R01.
- Nissan / Infiniti (JR402E family): RL4R01A, RE4R01A, RE4R01B.
- Mazda (JR402E family): R4A-EL.
- Ford / JATCO: JR402E-M (RJD) – a specific Ford Ranger 4x4 variant.
Vehicle model examples (different versions of the JR401E / JR402E design families were used; application depends on production year, engine, market and the exact transmission code):
- Nissan / Datsun: 200SX / Silvia (S12, 4N71B family versions), 240SX (S13, S14, certain 4-speed automatic versions), 300ZX (Z31 – 4N71B family; Z32 – RE4R01A family), Skyline (R30, R31 and certain later versions), Laurel (C31, C32 and corresponding later versions), Cedric / Gloria (certain automatic versions), Maxima / 810 (early rear-wheel drive versions), Pathfinder / Terrano (WD21, R50, certain automatic versions), Pick Up / Hardbody (D21), Frontier / Navara (D22), Xterra (WD22), Caravan / Urvan (E24), Vanette (C22), Stagea (WC34, some 2.0 and 2.5 l versions).
- Infiniti: M30 (F31, 1990–1992, 3.0 l), J30 (Y32, 1993–1997, 3.0 l), QX4 (R50, 1997–2002, 3.3 l, certain RE4R01A versions).
- Mazda: 929 (HC, approx. 1988–1991, 3.0 l, N4A-EL; HD, approx. 1992–1995, 3.0 l, R4A-EL), RX-7 (FC, certain N4A-EL versions; FD, automatic R4A-EL versions), MX-5 / Miata (NA, certain 4-speed automatic versions), MPV (LV, 2.6 l – 4N71B family; 3.0 l – R4A-EL), B-Series / Fighter (certain automatic versions, depending on engine and market).
- Ford: Ranger (corresponding 2003 and later 2.5 l turbodiesel 4x4 versions for Asian and Pacific markets with JR402E-M / RJD).
- Mitsubishi / Chrysler / Dodge: Starion and Conquest (1980s automatic versions of the 4N71B / L4N71B / E4N71B family).
Important: JR401E and JR402E are transmissions of different design families, so their codes are not complete synonyms of each other. Even variants within the same transmission family may have different hydraulic valve bodies, solenoids, planetary gear mechanisms, clutches, brake bands, torque converters, housings and electronic control components. N4A-EL must not be automatically equated with R4A-EL, and component compatibility between RE4R01A and RE4R01B must be checked separately. A common vehicle application list does not mean that every part fits all of the listed transmissions. Before ordering spare parts, it is essential to check the vehicle VIN, the exact transmission code and the original OE number.
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Check ballCode: A-CBL-68875Check ball. For various Jatco, Honda, Mercedes, VW/Audi models. For the valve body. 5,55 mm - 7/32"
Price 030 € VAT incl.
Automatic Transmission FilterCode: RE4.FIL01RE4R01A/R4A-EL, RE4R03A, JR403E , 4WD, NISSAN TERRANO II (R20) 98.07-, TERRANO (R50) 97.10-, PATROL GR (Y60,Y61) 91.10-, PATHFINDER (WD21) 90.01- NISSAN, 3.0 V6 MPV 93-99 MAZDA, 3.3 V6 QX4 INFINITI
Price 1236 € VAT incl.
Price 17201 € VAT incl.
FilterCode: SF159JATCO 4N71B , L4N71B, MAZDA B-SERIJA, MPV I; NISSAN PATHFINDER I JE94-Z24i 01.85-09.99
Price 615 € VAT incl.
Price 5263 € VAT incl.
