New OEM Genuine Honda ECM Engine Control Module  - new in the box, never installed.

Fits: 1988-1991 Prelude with B20A engine, Manual transmission, without California emissions.

Number on the part must be one of the following:

37820PK2661, 37820PK2662, 37820PK2663, 37820PK2664, 37820PK2665, 37820PK2666, 37820PK2A00,