New OEM Genuine Honda ECM Engine Control Module never installed. 

Fits: 1997 Prelude Auto transmission, without California emissions.  

Number on the part will be either 37820-P5M-A52 or 37820-P5M-A51 

­Please note!

Honda and Acura ECM (Engine control Module), transmission shift control modules, Valve Body, Safety items, and ABS braking systems require i-HDS and J2534 software to program – this can not be done with just a scan tool.  It can be programmed with other software but it has to be programmed with VIN # input. ​​​​​​​

We do not accept returns on these modules or systems installed and not properly programmed.