Buying the HPS AN Male to Male Union Adapter (Reducer) Fitting [Straight] [AN -8 to -4] (Aluminum, Black) should be simple, so here are the facts without the marketing noise.
![HPS AN Male to Male Union Adapter (Reducer) Fitting [Straight] [AN -8 to -4] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN919_1_3a5ae830-c6dd-4666-a012-4a693c216e11-3.jpg)
Hoses and fittings work under pressure and heat, where material choice decides service life. Route clear of heat sources and moving components.
Buyers comparing the hps an male to male union adapter will find the specification detail on this page rather than in a catalog footnote.
The hps an male to male union adapter listed here is checked against your vehicle before dispatch.
Every hps an male to male union adapter order goes through the same fitment review.
The important numbers
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $17.28 with free shipping over $99
- Availability: in stock, dispatched from the USA
Every order gets a fitment review before dispatch, and anything doubtful gets a message rather than a shipment.
Related listings: Hoses & Fittings · HPS AN Female Bulkhead Jam Nut AN Fitting [Straight] [-12] (Aluminum, Black) · HPS AN Female Bulkhead Jam Nut AN Fitting [Straight] [-10] (Aluminum, Black) · full catalog
Our warehouse team packs the way they would want their own parts to arrive.
If you want independent guidance before ordering, the Car Care Council maintenance tips is a useful reference.
Buyer questions
How do I confirm this fits?
Share your vehicle details with our team and we cross reference this listing before dispatch. Anything doubtful gets a message from us rather than a shipment.
When will my order dispatch?
Dispatch is normally the same or next business day, and heavy items travel on freight with a booked delivery window.
What happens if it arrives damaged?
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.
What happens before my order ships?
We verify diameter and reinforcement specification on every hose order.
![HPS AN Male to NPT Adapter Fitting [Straight] [-8 to 1/2 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_b76d947d-1e43-4e38-b986-a8f6682cdca6-300x300.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)
![HPS NPT Allen Plug Fitting [1/8 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN932_1_11e3bb56-b4df-4954-84cd-0d354b2dd8ff-300x300.jpg)
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