Spectre part number 81413.
Spectre's universal mass air flow sensor adapter is designed to allow you to add a 3 inch flange to your mass air sensor housing. This setup allows you to attach a 3 inch
clamp-on air filter or a 3 inch diameter tube directly to the stock mass air sensor. This adapter is constructed with a combination of aluminum and co-polymer ABS
components for a great look that is durable. The adapter's flange has a 3-3/8 inch by 2-3/8 inch bolt hole setup for multiple bolt hole configurations.

Application Guide:

Universal bolt hole configuration for multiple applications
For engines with MAF sensors and 3 inch openings
Allows a 3 inch air filter or intake tube or coupler to be mounted directly to MAF
Easy to install
May require drilling additional holes depending on the application

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