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PEIUOK Mass Air Flow Sensor MAF Review: Can it restore engine performance and clear fault codes?

PEIUOK Mass Air Flow Sensor Meter MAF for FORD FOCUS CMAFAX MONDEO SMAFAX GALAXY ACTIVA ECONOLINE KUGA TRANSIT VOLVO S40 S80 V40 V50 V70 C30 Replace 7M51-12B579-BB
4.7
[OEM Part Compatibility]  Fits multiple part numbers (7M51-12B579-BB, CP9Z12B579B, 1480570, LR029074, AFH70M-79) for direct replacement.
[Improves Engine Performance]  Enhances power, reduces emissions, and increases fuel efficiency for smoother running and lower costs.
[High Accuracy & Testing]  103% computer-tested with output tolerance under 3% to ensure precise ECU airflow readings.
[Fast Response Time]  15 ms response and durable OEM-grade materials for reliable performance under harsh conditions.
[Easy Install & Warranty]  10-minute DIY installation, resets warning light, saves on repairs; backed by a 13-month warranty.
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PEIUOK Mass Air Flow Sensor MAF is an automotive MAF sensor designed to restore accurate airflow measurement and engine response. Fitters and DIY owners gain reassurance from a quick install and the chance to clear fault codes fast. Will fitting the replacement restore smooth running and reduce emissions?

⚡ At a Glance
  • Flow Accuracy: Clear and stable signal, 103% computer-tested to ensure the ECU receives accurate airflow readings under hard engine conditions
  • Best for: Owners of compatible Ford and Volvo models needing a direct-fit MAF replacement to clear fault codes and restore engine response
  • Not ideal for: Drivers who insist on genuine factory-origin parts rather than aftermarket equivalents

Aftermarket mass air flow sensor intended as a replacement for several Ford and Volvo applications. Built with high-quality materials, a 15 ms response time, and a 13-month warranty.


Improved engine performance – thanks to accurate airflow readings

A precise sensing element delivers a clear, stable signal that was computer-tested to 103% to ensure the ECU receives reliable data even under demanding conditions. Output tolerance is quoted at less than 3%, helping keep sensor readings consistent.

More accurate airflow measurement helps restore correct fuel-air mixture and reduce misfire or hesitation. Clearing related fault codes often returns smoother idle and steadier throttle response.

Quicker throttle response – with a 15 ms electrical response time

Fast response circuitry reports airflow changes to the engine management quickly, limiting lag between changes in intake flow and ECU correction. Tight output tolerance supports repeatable readings across operating ranges.

Faster, more consistent readings improve driveability during acceleration and light-load throttling. Drivers can notice reduced surging and crisper throttle control after replacement.

Simple replacement and reset – with plug-and-play fit and a straightforward warning-light reset

The unit is designed for direct replacement of listed OE part numbers and fits like the original, allowing a typical swap in around 10 minutes. Disconnecting the vehicle battery ground is the recommended method to clear the warning light and reset learned data.

Quick installation suits home mechanics and small workshops, reducing downtime. Clearing the fault light and restoring normal running can often be achieved without diagnostic tools.

✨ The 4 Key Reasons for PEIUOK Mass Air Flow Sensor MAF
  1. Direct-fit compatibility - Matches common OE part numbers for straightforward replacement on many Ford and Volvo models
  2. 103% computer-tested - Ensures consistent sensor readings under hard engine conditions
  3. Fast 15 ms response - Improves throttle response and reduces hesitation during acceleration
  4. 13-month warranty - Provides assurance with refund or replacement through the seller
📋 Technical Details at a Glance
  • Category: Mass air flow (MAF) sensor
  • Part numbers replaced: 7M51-12B579-BB, CP9Z12B579B, 1480570, LR029074, AFH70M-79
  • Function: Measures intake airflow for ECU fuel and ignition control
  • Compatibility: Ford Focus, Mondeo, Kuga, Transit, Galaxy, Activa, Econoline; Volvo S40, S80, V40, V50, V70, C30 (as listed)
  • Response time: 15 ms
❓ Frequently Asked Questions

Q: Which vehicles is the sensor compatible with?

A: Compatibility is listed for a range of Ford and Volvo models including Focus, Mondeo, Kuga, Transit, Galaxy, and several Volvo models such as S40, S80, V40, V50, V70 and C30, plus the OE part numbers noted in the description.

Q: Is the sensor difficult to fit and how is the warning light cleared?

A: Typical installation is described as taking around 10 minutes; the recommended method to clear the warning light is to disconnect the battery ground to reset the ECU and warning indicator.

Q: Does the sensor come with any warranty if it fails?

A: A 13-month warranty is offered; customers are instructed to contact the seller through Amazon for a refund or a brand-new replacement.

🏆 Our Verdict

Suitable for owners and independent mechanics seeking a direct-fit aftermarket MAF replacement for several Ford and Volvo models. The unit stands out for computer-tested signal stability, a 15 ms response time, and OEM-spec materials that aim to restore engine smoothness. As a workshop-friendly alternative to dealer-time repairs, it represents a practical value for those wanting a quick, warrantied replacement.