This listing includes a genuine OEM ECU (Engine Control Unit) and one DESS (Digitally Encoded Security System) key for a 2008 Sea-Doo RXP-X 255.
•Part Number (ECU): 6658610000
•Brand: Siemens VDO / Rotax
•Model: MSE 3.7 R 1b
•Condition: Tested and working, ready to install
•Compatibility: 2008 Sea-Doo RXP-X 255 (supercharged model)
The included DESS key is already paired (matched) with the ECU, making installation plug-and-play—no dealership programming required.
🔧 Ideal for replacing a faulty ECU or for engine swaps.
🔐 Anti-theft functionality via the matched key ensures secure operation.
Included:
•1x ECU unit (P/N 6658610000)
•1x Programmed DESS key (
