The HPS AN Male to Male Union Adapter (Reducer) Fitting [Straight] [AN -6 to -4] (Aluminum, Black) arrives packed properly, checked against your vehicle and tracked from our door.
![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-9476-800b24555eb1-1.jpg)
Reinforcement ply count determines burst strength, which matters most on boosted applications. Route clear of heat sources and moving components.
Quick specs
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $16.97 with free shipping over $99
- Availability: in stock, dispatched from the USA
If your vehicle has been modified, tell us, since the factory data will not show a previous owner changes.
Also worth a look: Hoses & Fittings · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-6] (Aluminum, Black) · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-4] (Aluminum, Black) · full catalog
We pack for the worst day the carrier can have, which keeps our damage rate low.
Independent information on this topic lives at the Car Care Council maintenance tips.
Quick answers
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.
How do returns work here?
Report any transit damage with a photo and we will send a replacement or refund you. We handle the carrier claim ourselves.
How do you verify this part?
We verify diameter and reinforcement specification on every hose order.
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