PC350 104984590 Air Flow Sensor Compatible with Komatsu Machinery

1. Product Overview & Wholesale Price Range

The 104984590 Air Flow Sensor detects engine intake air volume and sends air flow signal to machine engine controller for PC350 machinery engine intake system. It is designed for direct installation.

• Factory Wholesale Price: $12 – $52 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• Component Type: Engine Air Flow Sensor
• MPN: 104984590
• OEM Part Number: 104984590
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for repair shop & distributor batch orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty with signal performance test guarantee

2. Application Worksite Checklist

Engineered with dust-resistant housing and sensitive internal sensing core, to withstand harsh engine intake system conditions:

• Intake Air Volume Monitoring: Provides accurate air flow signal to engine controller for fuel injection ratio adjustment.
• Heavy Earthmoving & Quarry Operations: Wear-resistant housing resists dust, oil mist and vibration under continuous heavy-load operation.
• Long-Hour Mining & Loading Work: Stable signal output prevents engine power loss and fault codes during multi-shift operation.
• Engine Fuel System Protection: Reliable air flow signal helps protect engine from abnormal fuel-air mixture and fuel consumption rise.

3. Air Flow Sensor Troubleshooting & Diagnostic Guide

If your PC350 machinery engine intake system is exhibiting sensor-related failure, consult the diagnostic guide below:

• Fault 1: No Air Flow Signal on Machine Dashboard
  Root Cause: Failed or intermittent air flow sensor — Engine controller receives no intake air trigger signal.
  Solution: Replace with new 104984590 air flow sensor and inspect connector pins.
• Fault 2: Engine Power Loss & Unstable Idle
  Root Cause: Incorrect air flow signal makes engine controller misjudge air intake volume.
  Solution: Install new 104984590 air flow sensor and check wiring connector.
• Fault 3: Engine Intake System Related Fault Code
  Root Cause: Open circuit, short circuit or corroded sensor connector.
  Solution: Replace 104984590 air flow sensor and clean connector terminals; clear DTC with diagnostic scanner.
• Fault 4: Higher Fuel Consumption & Black Smoke
  Root Cause: Wrong air flow data leads controller to incorrect fuel injection.
  Solution: Replace the 104984590 air flow sensor before pursuing expensive engine repairs.
• Fault 5: Sensor Internal Damage from Dust & Vibration
  Root Cause: Long time heavy vibration and dust pollution causes internal sensing element damage.
  Solution: Replace sensor, check intake pipeline and tighten fixing bolts properly.

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5. Frequently Asked Questions & Technical Support

Q1: How do I verify if 104984590 air flow sensor fits my PC350 machine?
A: Check your original sensor shape and connector. Send machine serial number to us for quick fitment check.

Q2: What is the working principle of this air flow sensor?
A: This air flow sensor measures intake air mass, sends signal to ECU to adjust fuel injection quantity for optimal air-fuel ratio.

Q3: What should I note during air flow sensor installation?
A: Do not touch the sensing chip, clean intake pipe before installation, check wiring connection and test engine performance after installation.

Q4: Is this 104984590 air flow sensor durable for heavy working condition?
A: It adopts sealed dust-proof housing, anti-vibration design, suitable for long-time heavy load engineering machinery engine intake system.