12323 Hitachi Astemo Air Flow Meter U20N02AFSA

Hitachi Astemo Air Flow Meter U20N02AFSA

The Hitachi Astemo Air Flow Meter U20N02AFSA (SKU 12-323) measures incoming air to support correct engine fuel delivery. This mass air flow sensor is listed for Nissan X-Trail T32 with QR25DE engine and Nissan Pathfinder R52 with VQ35DD engine. Check your vehicle application and original part number before ordering.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

Key Features & Benefits

• Hitachi Astemo Component - Identified by manufacturer part number U20N02AFSA.
• Air Flow Measurement - Provides the engine control unit with information about incoming air for fuel-delivery calculations.
• Application-Specific Replacement - Listed for Nissan X-Trail T32 QR25DE and Pathfinder R52 VQ35DD applications.
• Part Number Matching - Compare the OEM and cross-reference numbers below with your existing component.

Technical Specifications

• Brand: Hitachi Astemo
• Hitachi Astemo Part Number: U20N02AFSA
• SKU: 12-323
• Component Type: Mass Air Flow Sensor (MAF Sensor / Air Flow Meter)
• Listed Applications: Nissan X-Trail T32 QR25DE; Nissan Pathfinder R52 VQ35DD
• Listed Product Weight: 0.25 kg

Vehicle Compatibility

This Hitachi Astemo air flow meter is listed for:

• Nissan X-Trail T32 with QR25DE engine from 02/2017-->
• Nissan Pathfinder R52 with VQ35DD engine

Fitment can vary by vehicle specification. Confirm your application using the Parts Finder and compare the original part number before purchase.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

Compare your existing part against these listed numbers:

• Hitachi Astemo: U20N02AFSA
• OEM Part Numbers: 22680BV80B, 22680BV80A, 226805RB0A
• Cross-Reference Numbers: AFM-323 / AFM323

Common Symptoms of Faulty Air Flow Meters

• Rough or unstable idle
• Hesitation or reduced acceleration
• Increased fuel consumption
• Engine stalling
• Check engine light or air-flow-related fault codes

These symptoms can also have other causes. Diagnose the fault and inspect the intake system, wiring and connections before replacing the sensor.

What Does an Air Flow Meter Do?

A mass air flow sensor measures air entering the engine and sends that information to the engine control unit (ECU). The ECU uses the signal to calculate fuel delivery. An accurate signal helps maintain the appropriate air-fuel mixture as engine load and speed change.

Why Choose Hitachi Astemo Air Flow Meters?

Matching the specified Hitachi Astemo part number helps you select the correct component for your application. For this listing, confirm U20N02AFSA against your original sensor and the OEM cross-references above, rather than relying on vehicle model alone.

Why Choose LM15 Motorsport?

LM15 Motorsport supplies automotive replacement and engine-management parts, with part numbers and application details presented clearly to help you choose the right component.

Need help with fitment or installation? Contact LM15 Motorsport with your vehicle details and original sensor number for help checking this air flow meter for your Nissan X-Trail T32 QR25DE or Pathfinder R52 VQ35DD.