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Infiniti Ex35 Mass Air Flow Sensor Kits

Infiniti Ex35 Mass air flow sensor kits

Starting at $87.95, AutoBuffy stocks 1 mass air flow sensor kits for the Infiniti Ex35 from brands including SKP. The MAF sensor measures the volume and density of air entering the engine so the ECU can deliver the correct fuel mixture. A failing sensor throws off that ratio, triggering rough running, poor fuel economy, and check engine lights that won't clear.

Signs your Infiniti Ex35 needs a new mass air flow sensor kit

  • Check engine light with MAF-related codes such as P0100–P0104 stored in the ECU
  • Engine stumbles, hesitates, or surges during acceleration from a stop
  • Noticeably worse fuel economy with no other obvious cause
  • Rough or unstable idle that may fluctuate up and down at rest
  • Black smoke from the exhaust or a rich fuel smell indicating an over-fueling condition
  • Engine stalls shortly after starting, especially when cold, or struggles to stay running at low RPM

Which mass air flow sensor kit should you buy for your Infiniti Ex35?

The main decision is whether to choose a direct OE-replacement sensor, a performance-calibrated unit, or a kit that bundles the sensor with a new intake boot and clamps. Confirm whether your Infiniti Ex35 uses a hot-wire or vane-style MAF, and check whether the kit includes the IAT (intake air temperature) sensor, which is integrated into the MAF housing on many applications.

OE-Replacement Sensor Only
Best for
Drivers who want a straightforward fix at the lowest entry cost
What you get
Direct plug-and-play sensor matched to factory calibration; may require reuse of existing intake boot
Sensor + Intake Boot Kit
Best for
Vehicles where the rubber boot between the MAF and throttle body is cracked or oil-soaked
What you get
New MAF sensor plus a matched intake boot and clamps, eliminating unmetered air leaks that defeat the repair
Sensor with Integrated IAT
Best for
Applications where the MAF and intake air temperature sensor share one housing
What you get
Combined MAF/IAT unit that restores both functions in one swap, preventing a repeat check engine light from the IAT circuit
Performance / High-Flow MAF Kit
Best for
Modified engines with a cold-air intake or upgraded throttle body that exceed the stock sensor's measurement range
What you get
Wider measurement range sensor, often with a larger housing diameter, calibrated for increased airflow without triggering lean codes

Mass air flow sensor kits brands we stock for your Infiniti Ex35

SKP
1 option · from $87.95

Replacing a mass air flow sensor kit on a Infiniti Ex35

Easy⏱ 30–60 minutesOBD-II scanner (to read and clear codes)Flathead and Phillips screwdriversHose clamp pliers or a nut driverMAF sensor electrical contact cleanerTrim panel removal tool (if intake ducting is routed near bodywork)

Disconnect the battery or simply unplug the MAF sensor harness, then loosen the clamps securing the intake boot and slide the old sensor out of the air duct. Transfer any gaskets or grommets specified in the kit instructions, seat the new sensor firmly, and reconnect all clamps and the wiring connector before clearing codes and performing a short test drive. Avoid touching the sensing element with bare hands during installation, as skin oils can contaminate the wire and affect readings.

Frequently asked questions

How much does it cost to replace mass air flow sensor kits on a Infiniti Ex35?
Parts start at $87.95 for the Infiniti Ex35 at AutoBuffy. A shop will add one to two hours of labor on top of the part cost. Because the MAF sensor is typically accessible without major disassembly, total repair costs tend to stay on the lower end compared to other fuel system jobs.
Can I clean the MAF sensor instead of replacing it on my Infiniti Ex35?
Cleaning with dedicated MAF sensor spray is a reasonable first step if the sensor reads erratically but shows no physical damage. However, if the hot wire element is broken, the housing is cracked, or codes return immediately after cleaning, cleaning will not restore accurate readings and replacement is necessary.
Will a bad MAF sensor cause my Infiniti Ex35 to fail an emissions test?
Yes. A faulty MAF sensor disrupts the air-fuel ratio, which raises hydrocarbon and CO emissions and typically sets a check engine light. Most states automatically fail a vehicle with an illuminated check engine light, and the underlying rich or lean condition will also push tailpipe readings outside allowable limits.
Do I need to reset the ECU after installing a new MAF sensor on my Infiniti Ex35?
Clearing stored fault codes with an OBD-II scanner after installation is strongly recommended so the ECU can begin learning with fresh data. Some vehicles also benefit from an idle relearn procedure. Driving normally for a short break-in period after the reset allows the ECU to fully adapt to the new sensor's output.
What causes a MAF sensor to fail on a Infiniti Ex35?
The most common causes are contamination from oily aftermarket air filters, dirt bypassing a torn intake boot, or age-related degradation of the delicate hot-wire element. Installing a new intake air filter and inspecting all intake ducting for cracks at the same time as the MAF replacement helps prevent a repeat failure.
Is a MAF sensor kit the same as just buying the sensor by itself?
Not always. A kit typically includes additional components such as the intake boot, clamps, a pigtail wiring connector, or an integrated IAT sensor that share the same failure interval. Buying the kit ensures all wear items in that section of the intake are replaced together, reducing the chance of a related fault code appearing shortly after the repair.

Shop mass air flow sensor kits by year for the Infiniti Ex35

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Mass air flow sensor kits for other Infiniti models

Infiniti JX35Infiniti M37Infiniti QX80Infiniti FX50Infiniti QX60Infiniti EX37