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39209-AKB8-E00 Stay Ecu

Fits 1 KYMCO model-year: AK550 ST (2026). Callout 8 on the F12 ECU ASSY diagram, 1 per machine.

Genuine KYMCO OEM Part no. 39209-AKB8-E00 Also written 39209AKB8E00 Fits 1 model-year

Part number: 39209-AKB8-E00
Also written: 39209AKB8E00
Factory name: STAY ECU

$38.07

US shipping, calculated at checkout · Special orders come from KYMCO’s US distributor · 14-day returns & fitment guarantee

What this part is

Stay Ecu is the component KYMCO's factory catalogue lists under number 39209-AKB8-E00, in the electrical group. It is drawn on the F12 ECU ASSY exploded view as callout 8, and the table below lists every model-year that takes it.

Fits these KYMCO models (1 model-year)

Model	Years	Factory code	Diagram	Callout	Qty
AK550 ST	2026	SBA1BA(US)	F12 ECU ASSY	8	1

See it on the diagram

The factory exploded view this part is drawn on.

F12 — ECU ASSY

View diagram →

Often needed for the same job

From the same assembly diagrams as this part.

Not sure it’s yours?

Check the callout number: on the diagram above, 39209-AKB8-E00 is the part at callout 8.
Decode your VIN to land on the exact model, year and colour KYMCO built for you.
Still unsure? Email us the number and your VIN and we will confirm the fit.