Product Overview

The mass air flow sensor, OEM number 5WK96132, is fitted across a wide range of BMW models with the M54 3.0L engine, including the E46 330i, 330Ci, and 330Xi, the E39 530i, the E53 X5 3.0i, and the Z3 3.0i, spanning model years 2001-2006. Since this sensor covers four model series across multiple years, it's a genuinely high-turnover part for anyone stocking BMW engine management components.

Worn or failing units typically show up as difficulty starting, stalling shortly after starting, engine hesitation or dragging under load, jerking during acceleration, or a check engine light with a mass air flow code. GSK Auto manufactures this sensor to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

13621438871, 13627567451, 5WK96132Z

(Confirm against your VIN or chassis code before ordering - this sensor covers multiple BMW model series and years, so it's worth double-checking the exact chassis and engine before ordering at volume. Note: the air box and air filter should be clean and in good condition before installing this sensor, or fault codes may persist even after replacement.)

What Is a Mass Air Flow Sensor?

Function: The mass air flow sensor measures the volume and density of air entering the engine, sending that data to the ECU so it can calculate the correct amount of fuel to inject for an optimal air-fuel mixture.

Working Principle: As air flows past the sensor's internal measuring element, changes in the element's electrical resistance or heat transfer are converted into a signal the ECU uses to determine real-time airflow volume, allowing precise fuel delivery calculations under all driving conditions.

Importance: Since fuel injection quantity is calculated directly from the airflow reading, an inaccurate or failing MAF sensor can cause the engine to run too rich or too lean, affecting performance, emissions, and fuel economy.

Common Failures & Signs: Contamination or wear on the internal sensor element affecting measurement accuracy. Difficulty starting or stalling shortly after starting the engine. Hesitation, dragging, or jerking during acceleration or at idle. Check engine light with a mass air flow sensor fault code.

Key Features

OEM-standard fitment - matches factory sensor output and connector configuration for the 5WK96132 application.

Precision manufacturing - micromechanical sensor element design for precise airflow measurement.

Long service life - ABS housing construction resists wear, heat, and engine vibration.

Excellent fitment - direct bolt-in replacement, no modification required.

Corrosion resistance - housing construction resists moisture and under-hood heat exposure.

Reliable performance - consistent, stable signal output matching factory calibration.

Benefits

Importers - high-turnover part covering four BMW model series, simplifying inventory.

Wholesalers - steady demand from a widely used BMW engine platform.

Repair Shops - OEM-spec fitment reduces comeback risk on engine management jobs.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored smooth starting, acceleration, and fuel efficiency.

Packaging & Shipping

Standard export packaging, sized for a sensor component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This sensor is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing mass air flow sensors for the BMW 3 Series, 5 Series, X5, or Z3? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.