Radium Engineering 27mm Dry Break AN Couplers
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Description
Radium 27mm Dry Break AN Couplers — 6AN / 8AN
Radium dry break couplers allow two hoses to be separated with a leak-free disengagement while retaining pressure. Using a bayonet-style lock with a knurled machined surface, they will not leak when disconnected and will not introduce air upon reconnection — simply push and twist to engage or disengage. Designed for fuel and oil applications in 6AN and 8AN flare configurations.
Available as individual inner or outer couplers, or as a complete set (inner + outer). The 6AN and 8AN fittings are interchangeable, allowing step-up or step-down hose size configurations. Successfully tested at 150 PSI engaged and disengaged.
Important Notes:
- Not compatible with methanol fuel.
- Fittings flow equally in both directions and can be installed either way.
- The higher the operating pressure, the more difficult it becomes to connect and disconnect.
- Due to the dry break design, there will be some inherent flow restriction (pressure drop).
- A small amount of fluid drop may occur when engaging and disengaging.
- Do not disconnect fittings while pumps are running.
Technical Data:
- Overall length: 6AN kit = 82mm, 8AN kit = 87mm
- Weight: 6AN kit = 62g, 8AN kit = 69g
- Average pressure drop across coupler: 1-2 PSI
- Flow loss: 2% at 800 LPH
- Tested at: 150 PSI (engaged and disengaged)
Available Part Numbers:
| Part Number | Size | Configuration |
|---|---|---|
| 14-0300 | 6AN | Outer coupler (single) |
| 14-0301 | 6AN | Inner coupler (single) |
| 20-0250 | 6AN | Set (inner + outer) |
| 14-0302 | 8AN | Outer coupler (single) |
| 14-0303 | 8AN | Inner coupler (single) |
| 20-0251 | 8AN | Set (inner + outer) |
Why Radium Engineering?
- ✅ Manufactured in the USA to motorsport-grade tolerances
- ✅ CNC-machined anodized aluminium with knurled bayonet lock for secure, tool-free connection
- ✅ Trusted by tuners and race teams running high-power fuel and oil system builds worldwide
- ✅ Leak-free disengagement at 150 PSI — no air introduction upon reconnection
- ✅ 6AN and 8AN interchangeable for step-up/step-down hose size configurations
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.