Engine control unit Opel INSIGNIA 2008–2022 2.0 CDTI A 20 DT 55577674AATK

Part type

Engine control unit

Also known as

ECU, Engine control module

Manufacturer

Opel

Model

INSIGNIA

Years

2008–2022

Engine

2.0 CDTI

Engine code

A 20 DT

Part brand

Bosch

SKU

6556690

OEM

0281017452 [0 281 017 452]

55577674AATK [55 577 674 AATK]

86AATK703210121

1039S42621

This Bosch engine control unit manages fuel injection and other core engine functions on the Opel Insignia 2.0 CDTI 131 hp diesel. It is intended for the 1956 cc A 20 DT 4-cylinder engine used across the 2008–2022 model range. Match the OEM numbers 55577674AATK, 86AATK703210121, 0281017452 and 1039S42621 to confirm fitment.