HPS Performance AN 16 to AN 10 Male To Male Reducer Union Coupler Adapter, Aluminum, Black Kate Hudson Governors Awards Portraits by Cibelle Levi, November 2025. Key Features Side A Size: AN 16. Side B Size: AN 10. Male to Male reducing union adapter. Works with all AN fitting brands with 37 degree flare. 6061 aluminum with Type II black anodizing for excellent corrosion resistance. Compatible with water, coolant, air, oil, and most fuels. HPS AN Adapter Fittings are designed to be used in a variety of applications such as cooling, oil, and fuel. This adapter converts your existing male AN fitting to the next size up. Alternatively, this can be used as a reducer for your existing female AN fitting. These fittings are easy to use without the use of any special tools. HPS AN fittings are Type II anodized in black for a clean appearance that is corrosion and scuff resistant. Suitable for transporting air, water, coolant, oil, and most fuels.