Product Description
Genuine GM 19166574 MAF Sensor Weld Flange
For Use with GM 15865791 LS3 / LS7 “Card” Style Mass Airflow Sensors
The Genuine GM 19166574 MAF Sensor Weld Flange provides a simple and precise solution for adapting LS3 and LS7 “card” style mass airflow sensors to custom aluminum intake tubes. Perfect for LS swap projects or high-performance factory upgrades, this flange allows builders to easily integrate the popular LS3-style MAF sensor for accurate airflow readings—especially in boosted or high-flow applications. Includes screws and washers for MAF sensor mounting (sensor not included).
Key Features
- Genuine GM 19166574 weld flange for factory-quality fit and reliability
- Designed for use with GM 15865791 LS3/LS7 “card” style MAF sensors
- Ideal for custom aluminum intake fabrication or LS swap conversions
- Enables accurate airflow measurement for high-boost and large-volume intake systems
- Includes mounting screws and washers for quick, secure installation
- Durable aluminum design for easy welding and long-lasting performance
Key Fitments
- Fits LS3 and LS7 engines using GM 15865791 “card” style MAF sensors
- Compatible with custom fabricated aluminum intake tubes for LS swaps
- Works with factory and aftermarket ECUs calibrated for LS3-style MAF sensors
- Popular among boosted LS applications requiring precise MAF scaling
- Ideal for street, strip, or custom performance builds
