Looking for the HPS AN Male to Male Union Adapter AN Fitting [Straight] [-4] (Aluminum, Black)? It is on the shelf here, checked and ready to ship.
![HPS AN Male to Male Union Adapter AN Fitting [Straight] [-4] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN815_1_1a0792e3-a861-40aa-8fb4-3a21ccc8a48e-3.jpg)
Reinforcement ply count determines burst strength, which matters most on boosted applications. Keep petroleum away from standard silicone unless the hose is lined for it.
What you are buying
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $15.07 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.
More in this department: 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
Parcels leave our USA warehouse promptly and arrive protected, because packaging failures are returns waiting to happen.
When you want a second opinion that is not a parts store, read the NHTSA vehicle safety hub.
Buyer questions
What do you need to verify fitment?
Send your VIN or your year, make and model and our fitment desk confirms the part against manufacturer data before it ships. The check is free and usually answered the same business day.
Do you ship the same day?
Orders placed before early afternoon on a business day usually leave our USA warehouse the same day, and tracking is emailed when the label is created.
How do returns work here?
Returns are handled in one reply for most cases. Keep your order confirmation, since it is the only proof of purchase we need.
What happens before my order ships?
We verify diameter and reinforcement specification on every hose order.
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![HPS AN Male to Metric Adapter Fitting [Straight] [-6 to M16 x 1.5] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_b0b8871f-2b21-4f3d-9270-e611d31355a7-300x300.jpg)
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