Product Description
Delphi MT05-Family ECU 28561520 - CSC RZ3S Haylon 400
This engine control unit is cataloged for the Zongshen ZS400GS EFI system used in the CSC RZ3S. Identification is H27-107 / 85400-0000-010033 / Delphi 28561520.
Why the Delphi Number Matters
28561520 appears on MT05-family controllers used across multiple powersports applications. The MT05 platform is supported by aftermarket tools for ECU identification, reading, writing and calibration work. This gives the unit value not only as a correct RZ3S replacement but also as potential donor hardware for experienced ECU tuners.
CSC also used Delphi 28561520-family hardware in another 400-class application, but with a different Zongshen ECU part number and calibration. Do not assume those controllers are interchangeable without checking software, pinout and engine configuration.
Identification
- CSC SKU: H27-107
- Zongshen MPN: 85400-0000-010033
- Delphi code: 28561520
- Confirmed application: CSC RZ3S Haylon 400 / ZS400GS
