Walker Products 245-1257 mass air flow sensor for the 2003-2004 Infiniti FX45 V8 4.5L and other vehicles measures the air entering the engine. Its readings help the ECU set the air-fuel mix.
- Part of the Walker Premium mass air flow sensor line
- Every sensor is programmed and tested for fit, form and function
- Custom-engineered circuit boards
- Supplied as a complete sensor and housing assembly
- Custom-tuned flow characteristics across the full flow spectrum
- Calibrations go through 100% production testing and are verified with on-vehicle testing
Quick facts
- Part: Walker Products 245-1257 mass air flow sensor
- Fits: 2003-2004 Infiniti FX45 V8 4.5L and other vehicles
- Condition: New
A rough idle, hesitation or a check engine light can mean the mass air flow sensor is worn, though a clogged air filter or a cracked intake duct can be behind the same signs, so find the cause before replacing it.
Fits
Besides the 2003-2004 Infiniti FX45 V8 4.5L, this mass air flow sensor is a direct-fit replacement for the 2003-2004 Infiniti M45 V8 4.5L and the 2003-2004 Infiniti Q45 V8 4.5L. The 2003-2004 Infiniti M45 V8 4.5L takes one sensor, and this listing is one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Terminal quantity: 5
- Connector gender: female
Build and materials
- Type: mass air flow sensor assembly
- Housing: included
- Condition: New
- Country of origin: China
In the box
One mass air flow sensor assembly with its housing. Mounting hardware is not included, and the old fasteners may not be reusable, so plan on new ones.
Installation notes
- Some vehicle manufacturers recommend replacing the complete housing assembly so the connector air tubes are clean.
- Oils from your hands or even air pollution can damage the sensor, so handle it with care.
- The sensor is designed for straightforward installation.
Interchange: 74-10132 · 64-1802
5S2966 · MAF0101 · 22680AR200 · 22680AR20A · MAS0372 · SU6525
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
5S2966, 74-10132, 64-1802, 641802, MAF0101, 22680AR200, 22680AR20A, MAS0372, SU6525
Frequently Asked Questions
Does the Walker Products 245-1257 sensor fit the 2003-2004 Infiniti M45 V8 4.5L?
Yes. Walker Products 245-1257 is a direct-fit replacement for the 2003-2004 Infiniti M45 V8 4.5L.
Does the Walker Products mass air flow sensor include the housing and mounting hardware?
This sensor assembly includes the housing but not mounting hardware. Plan on new fasteners, since the old ones may not be reusable.
How many terminals does this mass air flow sensor connector have?
The connector is female with 5 terminals. Walker Products 245-1257 is one sensor, and the vehicle takes one.
Can a rough idle or hesitation come from a worn mass air flow sensor?
Yes. A worn sensor can give the ECU wrong air readings, which can show up as a rough idle or hesitation. A shop can read the stored codes to see what is behind it.
Does this mass air flow sensor replace part number 22680AR200?
Yes. 22680AR200 is one of the numbers this sensor replaces, along with 22680AR20A and MAF0101.
