This ECU supports Toyota Land Cruiser FZJ100 models fitted with the 1FZ-FE 6 cylinder engine. Manual transmission models ONLY. There are two types of OEM ECU fitted to these models. One has four plugs on the wiring harness, the other has three. The FZJ100Link ECU supports both three and four plug models. On models with four plugs on the wiring harness, the plug that has no matching connector on the ECU is to be left disconnected.