4N71B Transmission parts, repair guidelines, problems, manuals

Transmission general data

4N71B 4-speed automatic transmission 4N71B was produced in 1984 for rear wheel drive Nissan 300ZX.This transmission is a successor of very famous 3-speed modification 3N71B. Since 1989 this transmission was modified for Mazda 929 under the name N4A-EL. In 2000 4N71B was used as a basis for updated JR401E, which is used with 3-liter engines V6.


Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type
4ATRWD2807AT-Matic J

Technical issues and repair guidelines

This transmission appears in repair services very rarely. Due to its simple design specialists usually just need to replace worn-out spare parts and friction clutches to bring this transmission back to life.