Product Description

Replace your faulty or immobilized ECU system with this OEM BMW Engine Control Unit Kit, part number 8617551, designed for BMW vehicles equipped with the N20 engine including F20, F21, F30, F31, F32, and F10 models.

This is a complete matched ECU + Key kit, providing a convenient solution for ECU replacement, immobilizer issues, or lost key situations. When installed as a full set, it can significantly reduce or eliminate the need for additional coding.

What’s Included

• Engine Control Unit (DME / ECU)
• Matching key / key chip
• Immobilizer-matched components (if included in donor set)

👉 All components are paired from the same vehicle for compatibility

Features

• OEM BMW ECU Kit with Key
• Part Number: 8617551
• N20 engine compatible
• Fits BMW F20 / F21 / F30 / F31 / F32 / F10
• Plug-and-play potential when installed as a full matched set
• Solves ECU and immobilizer synchronization issues

Condition

Used / OEM (tested working unless otherwise stated)

Important Notes

• Must be installed as a complete matched set
• May still require minor programming depending on vehicle setup
• Professional installation recommended
• Verify compatibility before purchase

Common Symptoms Fixed

• Engine will not start
• Immobilizer / key recognition issues
• ECU failure or communication faults
• Check engine light due to ECU malfunction
• Lost key / ECU mismatch situations

Fitment

BMW Models (N20 engine):

• F20 / F21 1 Series
• F30 / F31 3 Series
• F32 4 Series
• F10 5 Series

Tags 

BMW ECU kit 8617551, N20 engine control unit, BMW F30 ECU + key, BMW F20 immobilizer set, BMW ECU plug and play kit, BMW engine computer replacement

Return Policy

Returns are accepted within 14 days of delivery. Items must be returned in the same condition as received and in the original packaging.

The buyer is responsible for return shipping costs.

Any customs fees, taxes, or import duties are the responsibility of the buyer.

All parts are used OEM components. We are not responsible for installation issues, coding requirements, or labor costs. Please ensure compatibility with your vehicle before purchasing.