The selected VY LS1 airflow meter is the 90mm outside-diameter housing with a three-pin connector. The product record warns that reference 25178988 is advertised against more than one housing diameter. The number alone therefore leaves a critical physical check unresolved.
Keep the original reference, an actual housing measurement and the connector photographs together. A larger-looking opening in a product image is not a reliable measurement.
Confirm the VY LS1 application first
The selected 90mm-OD VY LS1 meter is listed for Australian Commodore VY 5.7L LS1 V8 petrol applications, 09/2002–08/2004, including SS and SV8 sedan, ute and wagon where the original unit matches.
The offer excludes the 85mm type, V6 engines and later L98/L76/L77/LS3 sensors. Confirm VIN, actual build month, engine and the original assembly rather than extending fitment from the Commodore badge.
Measure the original outside diameter
Have the installer confirm the original housing’s outside diameter and the corresponding interface being compared. Keep outside diameter distinct from an internal opening or a photograph-scaled estimate.
Then match the three actual contacts, connector keying, housing arrangement and mounting interface. The reference and contact count do not cancel a diameter mismatch. If the measurement point is unclear, send a labelled photograph and ask for clarification before ordering.
Keep the assembled meter separate from intake parts
The package contains one assembled airflow meter. Intake hoses, clamps and vehicle wiring are excluded. The supplied unit should not be treated as a complete intake-system conversion or a remedy for a separately damaged hose or loom.
This comparison makes no tuning, calibration or performance claim. Have a running complaint diagnosed before selecting a replacement; the dimensions and plug identify the package rather than proving the cause of a fault.
Make the measurement reviewable
Provide the vehicle identifiers, original number, reliable outside-diameter measurement and accessible photographs of the full meter, measurement location and connector. State any difference, including an 85mm original, before selecting the part.
Prepared from application records and the linked product photographs. The featured workshop scene is an AI-generated editorial illustration. Information reviewed on 3 November 2026.