Bulkhead, -6 AN ORBF » 9/16x18 UNF, OR
Quick Overview
- Bulkhead assembly, -6 ORB to dual 5/16 quick connect
- O-ring grooves seal on uneven surfaces
- Sold as complete four-piece assembly
- Used on TU475-525R modules and tanks
- E85 compatible, black anodized aluminum
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$33.12
per EACH (USD)Bulkhead Assembly, -6 ORB to Dual 5/16" Quick Connect, O-Ring Sealed, Black
Adds a sealed port to a tank or module wall that is not perfectly flat.
The Racetronix BHPRA-6R is a complete four-piece bulkhead assembly that puts a sealed 5/16" quick-connect port through a wall that is not perfectly flat, such as molded plastic or uneven metal. It is used on Racetronix TU475-525R modules and on many other tanks and housings, for example to add a return port.
The 90-degree bulkhead body has a -6 ORB female port on the outside and a 9/16"-18 UNF male thread that passes through the wall. O-ring grooves under the body flange and in the jam nut let the O-rings seal against surfaces where crush or bonded washers leak. A QDA-56M6 adapter (-6 JIC male with O-ring to 5/16" male quick connect) fits the outside port, and a second adapter threads onto the 9/16"-18 UNF end inside to give another 5/16" male quick connect.
Key features
- 90-degree bulkhead body: -6 ORB female outside, 9/16"-18 UNF male through the wall.
- O-ring grooves under the flange and in the jam nut, for uneven surfaces.
- Two 5/16" male quick connects, one each side.
- E85 compatible.
- Aluminum, black anodized.
BHPRA-6R is sold only as the complete four-piece assembly with its O-rings. The outside adapter is also available on its own as QDA-56M6. Do not use tape or sealant; the O-rings do the sealing.
Specifications
| Part number | BHPRA-6R |
| Pieces | 90-degree bulkhead body, jam nut, QDA-56M6 outside adapter, inside 9/16"-18 UNF to 5/16" quick-connect adapter, O-rings |
| Outside port | -6 ORB female, fitted with QDA-56M6 (-6 JIC male to 5/16" male quick connect) |
| Wall thread | 9/16"-18 UNF male |
| Inside connection | 5/16" male quick connect |
| Sealing | O-rings in grooves under the body flange and in the jam nut |
| Material | Aluminum, black anodized |
| Fuel compatibility | Gasoline and E85 |
Frequently asked questions
Why O-ring grooves instead of washers?
Molded plastic and some metal housings are not perfectly flat. An O-ring in a groove is more forgiving than a crush or bonded washer and seals against small imperfections.
Can I buy the pieces separately?
The assembly is sold complete. The outside adapter, QDA-56M6, is also sold on its own.
Is it E85 compatible?
Yes. It is made from 6061-T6 aluminum and black anodized, and works with gasoline and E85.
Questions and support
Not sure which fitting your build needs? Email [email protected] before you order.
Racetronix provides technical support to verified customers through our support forum, not by phone or email. Please request forum access when you place your order so your account is approved before your parts arrive. The forum is moderated, open 24/7, and holds a knowledge base going back to 1999.

























