The HPS AN Male to Male Union Adapter (Reducer) Fitting [Straight] [AN -6 to -4] (Aluminum, Black) is in stock at PartSmith Co. and ready for dispatch from our USA warehouse.
![HPS AN Male to Male Union Adapter (Reducer) Fitting [Straight] [AN -6 to -4] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN919_1_43a7f2a2-147c-42fa-9476-800b24555eb1-3.jpg)
Inner diameter must match the fitting exactly, since eyeballing sizes is how leaks begin. Route clear of heat sources and moving components.
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.
Ordering the hps an male to male union adapter takes a minute and the confirmation reaches you straight away.
At a glance
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $16.97 with free shipping over $99
- Availability: in stock, dispatched from the USA
Shops ordering in volume can send a full parts list and we will verify the whole job in one reply.
See also: Hoses & Fittings · HPS AN Female Bulkhead Jam Nut AN Fitting [Straight] [-4] (Aluminum, Black) · HPS AN Female Bulkhead Jam Nut AN Fitting [Straight] [-2] (Aluminum, Black) · full catalog
Finished surfaces are wrapped and hardware is bagged, so the part arrives ready to install.
For neutral background on this kind of maintenance, see the Car Care Council maintenance tips.
Common questions
How do I know this is the right part?
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.
How quickly can I get this?
We ship from a USA warehouse with quick dispatch, and delivery estimates appear at checkout once you enter your address.
What is the return policy?
Report any transit damage with a photo and we will send a replacement or refund you. We handle the carrier claim ourselves.
What happens before my order ships?
We verify diameter and reinforcement specification on every hose order.
![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)
![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 Hex Plug Fitting [1/8 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN933_1-300x300.jpg)
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