UNITHUB MAF Mass Air Flow Sensor 2451103 — GM 2005–2015 Direct-Fit 5-Pin, OEM Fit

UNITHUB MAF Mass Air Flow Sensor 2451103 is a direct-replacement airflow meter engineered to measure incoming air and send real-time data to your vehicle’s engine control module for smoother idling and reliable engine response.

If your vehicle shows rough idle, inconsistent throttle response, or a check-engine light related to airflow readings, this UNITHUB mass air flow sensor is built to be a plug-and-play swap for many GM models from 2005–2015. Designed with a five-pin connector and a robust housing, it matches OEM fitment numbers and supports a wide roster of Chevrolet, Buick, GMC, Cadillac, Pontiac, Saab, Saturn, Hummer and Isuzu vehicles.

What vehicles will this MAF sensor fit?

This sensor is compatible with numerous GM platforms across multiple brands. It replaces several OEM part numbers, but always verify compatibility against your vehicle’s year, make, model and original part number before purchase.

• Fits Chevrolet models such as Colorado, Equinox, Impala, Malibu, Camaro, Cobalt, Corvette, HHR, Spark, Trailblazer, and more.
• Compatible with Buick Allure, LaCrosse, Rainier, Regal and select models across Cadillac, GMC, Pontiac, Saab, Saturn, Hummer, and Isuzu lineups.
• Interchangeable part numbers include 2451103, 12576410, 15828006, 15865791 and additional OEM references for cross-checking.

How easy is installation and what connector does it use?

The UNITHUB MAF sensor is designed for straightforward installation using the vehicle’s existing harness. It has a five-pin electrical connector and mounts into the factory air intake duct in place of the old sensor.

• Direct-fit design aims for bolt-on replacement with no special tools beyond basic hand tools.
• Five-pin electrical interface matches common GM harnesses—inspect your connector for pin layout match.
• Do a visual comparison with the old sensor and verify OEM part numbers before fitting.

What performance and durability features does this sensor offer?

This replacement MAF is built to provide consistent airflow measurement and stable signal transmission to the engine control unit. Components are designed for reliable operation in engine-bay conditions.

• Sensitive sensing element with quick response to airflow changes for smoother throttle modulation.
• Stable electrical transmission to minimize erratic readings and reduce false fault codes.
• Robust housing and connector designed to withstand heat, vibration and routine engine-bay exposure.

Which part numbers should I cross-check before buying?

The unit covers a wide range of interchange references; confirm your vehicle’s original MAF number for best results. Cross-checking prevents purchasing the wrong variant for your application.

• Common interchange numbers: 2451103 and 12576410 (start here when verifying fitment).
• Additional references include 15828006, 15865791 and other OEM identifiers—check your vehicle’s service manual or compatibility tools.
• If unsure, compare the old sensor’s electrical pin count and housing shape to ensure match.

Who is this for: This UNITHUB MAF Mass Air Flow Sensor is for DIY mechanics and professional technicians replacing a failing or suspect MAF on mid-2000s to mid-2010s GM platforms. It’s intended for owners who need an economical, direct-replacement airflow sensor that aligns with common OEM part numbers and suits a wide range of Chevrolet, Buick, Cadillac, GMC, Pontiac, Saab, Saturn, Hummer and Isuzu vehicles. Confirm fitment by cross-referencing your vehicle’s year, model and original part number before ordering.