PartSmith Co. supplies the HPS AN Male to Male Union Adapter Fitting [45 Degree] [AN -4] (Aluminum, Black) to drivers, shops and fleets across the USA.
![HPS AN Male to Male Union Adapter Fitting [45 Degree] [AN -4] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN813_1_63f9009c-913b-4e64-adc3-57c2320abe7c.jpg)
Clamp choice matters: constant tension or lined clamps protect the hose surface over heat cycles. Measure inner diameter at the fitting rather than estimating by eye.
Details that matter
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $23.10 with free shipping over $99
- Availability: in stock, dispatched from the USA
Our fitment desk exists precisely for the listings where the specification is easy to misread.
Explore more: Hoses & Fittings · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-16] (Aluminum, Black) · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-12] (Aluminum, Black) · full catalog
We ship fast from our own shelves, and tracking reaches your inbox as soon as the carrier receives the parcel.
If you want independent guidance before ordering, the fuel economy maintenance guidance is a useful reference.
Buyer questions
How do I know this is the right part?
Our parts team confirms fitment before the box is sealed. Contact us with your vehicle details and we will settle it in advance.
Do you ship the same day?
Most orders dispatch within one business day. You receive tracking by email the moment the parcel is handed to the carrier.
What is the return policy?
A straightforward returns window applies from delivery. Keep the original packaging until you have test fitted the part and contact support for a fast exchange or refund.
What quality checks does this get?
Lines and fittings are checked for pressure rating, inner diameter and ply count before shipping.
![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 NPT Allen Plug Fitting [1/16 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN932_1-300x300.jpg)
![HPS AN Male to NPT Adapter Fitting [Straight] [-8 to 1/4 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_8fbe7cf9-52b7-41cb-9b7c-e7396fcd09ae-300x300.jpg)
![HPS Push-on Hose End to AN Female Fitting [120 Degree] [-8] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/150-120_1_b7ae2165-4f89-472c-a9fc-72ba3e09b875-300x300.jpg)
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