A-Premium Mass Air Flow Sensor MAF Replacement 3-Pin 3-1/2" Dia — OE-Fit, 12V

A-Premium Mass Air Flow Sensor Assembly [3 Pins] is a direct-fit replacement MAF sensor engineered to restore accurate air-flow readings for compatible GM, Chevrolet, GMC, Oldsmobile, Pontiac and Isuzu vehicles.

This three-pin MAF sensor (part #25180303) measures intake air volume to help the engine control unit adjust fuel delivery and ignition timing. Built from PBT+GF30 and aluminum alloy, the unit includes mounting hardware, a 3-1/2" connection diameter, and a 12V maximum supply rating. It matches numerous OEM reference numbers and fits a wide range of 1990s–2000s domestic and import models when the original uses a 3-pin configuration.

How do I know this MAF sensor fits my vehicle?

Fitment depends on model year, engine displacement and whether your original MAF has three electrical pins and a 3-1/2" connection diameter. Check your stock part number and connector type against the listed reference numbers and compatibility table before ordering.

• Compatible with many Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile and Pontiac models (see full list).
• Only for 3-pin MAFs — not compatible with 5-pin sensors.
• Connection diameter must be 3-1/2"; not for 3-1/8" openings.

What performance and build features does this replacement offer?

The A-Premium assembly combines a precision sensing element with durable housing materials to provide consistent readings across the sensor’s measuring range. It is designed to meet common OE specifications for terminal count, bolt pattern and mounting style.

• Terminal quantity: 3 pins, with four bolt holes and hose-clamp mounting.
• Materials: PBT+GF30 plastic housing with aluminum alloy components for durability.
• Measuring range: 0–9.25 m³/min with ±3% measurement accuracy.
• Electrical: maximum supply voltage 12V, ready for standard vehicle electrical systems.

Can I install this MAF sensor myself, and what should I watch for during installation?

Many mechanically inclined owners can replace a MAF sensor with basic hand tools, but follow safe procedures and ensure the engine is off and cool. Proper sealing of the intake and a secure electrical connection are essential for correct operation.

• Disconnect the battery before unplugging the electrical connector to avoid short circuits.
• Confirm the hose-clamp mounting and four-bolt holes align with the intake assembly.
• Inspect intake tubing for leaks and verify the connector is a 3-pin type and 3-1/2" diameter.

What reference numbers and part cross-references should I compare?

This assembly cross-references several OEM and aftermarket part numbers used across GM and related brands, helping you match the correct replacement part. Use these numbers to verify compatibility with your vehicle’s paperwork or dealership parts listing.

• Common cross-references: 10332673, 19207202, 19112573, 25180303 and 25008207.
• Additional catalog numbers include 86-8309, 1581564, 25008309 and 868309.
• Remember: these references apply only for 3-pin/3-1/2" variants.

Who is this for: The A-Premium 3-pin MAF sensor is aimed at owners, DIY mechanics and independent repair shops maintaining 1990s–2000s GM-platform vehicles and select Isuzu models that originally used a 3-pin mass air flow sensor with a 3-1/2" inlet. Choose this unit if you need a direct-fit replacement that restores accurate airflow data, meets common OEM form and function, and comes with a one-year unlimited-mileage warranty for added confidence.