Engine ECU MECM-W186 A1 – 1997 Nissan Pathfinder / Infiniti QX4 3.3L V6.

Product Description:

Genuine OEM Engine Control Unit (ECU/ECM/PCM) with part number MECM-W186 A1, compatible with select 1997 Nissan Pathfinder and Infiniti QX4 models equipped with the 3.3L V6 engine (VG33E). This unit controls engine management functions including fuel injection, ignition timing, and emissions systems. It is an ideal replacement for a faulty or damaged ECU to restore proper vehicle performance. Programming may be required based on your vehicle’s immobilizer system.

Part Number: MECM-W186 A1
Condition: Tested Used or Refurbished
Engine Type: 3.3L V6 VG33E
Transmission: Automatic
Programming Required: Yes, if vehicle is equipped with an anti-theft system

Compatibility Table:

Make	Model	Year	Engine	Notes
Nissan	Pathfinder	1997	3.3L V6	VG33E engine, automatic
Infiniti	QX4	1997	3.3L V6	VG33E engine, automatic

Compatibility Table:

Make	Model	Year	Engine	Notes
Nissan	Pathfinder	1997	3.3L V6	VG33E engine, automatic
Infiniti	QX4	1997	3.3L V6	VG33E engine, automatic

Shipping, returns and warranty

Worldwide shipping with tracking
30-day returns on unused, uninstalled parts
90-day limited warranty against defects

Send us your VIN and we confirm fitment before shipping. See our shipping policy and return policy.

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MECM-W186 Engine ECU A1 1997 Nissan Pathfinder Infiniti QX4 V6 MECMW186