The HPS AN Male to Female Expander Adapter Fitting [Straight] [AN -4 to -6] (Aluminum, Black) is one of our steady sellers in Hoses & Fittings, and it ships from the USA.
![HPS AN Male to Female Expander Adapter Fitting [Straight] [AN -4 to -6] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN951_1_f344e81b-811d-4be5-818d-532bac736f23-2.jpg)
Reinforcement ply count determines burst strength, which matters most on boosted applications. Re check clamp torque after the first few heat cycles.
The hps an male to female expander adapter ships protected, because a damaged part helps nobody.
Drivers choose the hps an male to female expander adapter here for honest specification detail and quick dispatch.
Buyers comparing the hps an male to female expander adapter will find the specification detail on this page rather than in a catalog footnote.
Quick specs
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $19.72 with free shipping over $99
- Availability: in stock, dispatched from the USA
Message us the vehicle details and we will confirm compatibility, including anything unusual about your build.
Explore more: Hoses & Fittings · HPS AN Female Bulkhead Jam Nut AN Fitting [Straight] [-10] (Aluminum, Black) · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-8] (Aluminum, Black) · full catalog
Finished surfaces are wrapped and hardware is bagged, so the part arrives ready to install.
Independent information on this topic lives at the Car Care Council maintenance tips.
Quick answers
Is fitment guaranteed on this listing?
The application text on this page lists what the part serves. If your vehicle is not clearly covered, send the VIN and we will rule on it before you pay.
When will my order dispatch?
Most orders dispatch within one business day. You receive tracking by email the moment the parcel is handed to the carrier.
Is there a warranty on this?
If the part does not fit, message our support desk with the order number and we will arrange an exchange or refund. Keep the packaging until the test fit is done.
How do you verify this part?
We verify diameter and reinforcement specification on every hose order.
![HPS AN Male to NPT Adapter Fitting [Straight] [-8 to 3/8 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_a94183bf-0c19-4e60-a94a-8eee322012ab-300x300.jpg)
![HPS AN Male to Metric Adapter Fitting [Straight] [-8 to M14 x 1.25] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_2d43096e-0176-48a6-aafa-d4ad5b2e739f-300x300.jpg)
![HPS AN 3-Way Tee Adapter (Tee with female on run) Fitting [Tee] [AN -8] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN9261_1_be005c51-8bd2-46a9-92b6-7e329201ec21-300x300.jpg)
![HPS AN Male to Metric Adapter Fitting [Straight] [-6 to M14 x 1.5] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_ef8cf05a-8f9b-4a44-938e-d86cae0e4307-300x300.jpg)
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