Adapter, QC 3/8" M>F, -8 ORB Female Port
Quick Overview
- In-line 3/8" female to 3/8" male quick-connect
- -8 AN ORB female port and 1/8" NPT gauge port
- Crescent-lock hex screw-in retainer
- Viton O-rings, E85 and gasoline
- E85 compatible, black anodized 6061-T6 aluminum
Show More
$65.30
per EACH (USD)In-Line Quick-Connect Adapter, 3/8" Female to 3/8" Male with -8 AN ORB Female Port, Black
Fits in line between a 3/8" female and 3/8" male quick-connect and adds a -8 AN ORB female port and 1/8" NPT gauge port.
The Racetronix QDA-38FM8RFP fits in line on a 3/8" quick-connect fuel line: one end takes the 3/8" male tube end and the other plugs into the 3/8" female connector. The body adds a -8 AN ORB female port and 1/8" NPT gauge port, for a pressure gauge, sensor or return line. It is machined from 6061-T6 aluminum and black anodized.
Key features
- 3/8" female quick-connect.
- 3/8" male quick-connect.
- -8 AN ORB female port and 1/8" NPT gauge port for a gauge, sensor or return line (gauge not included).
- Crescent-lock hex screw-in retainer. Replacement lock: QDA-38CL.
- Viton O-rings in the female quick-connect.
- Black anodized 6061-T6 aluminum, E85 compatible.
- For fuel systems, e-vac systems and vacuum or boost lines.
How to connect
- Unscrew the crescent lock from the back of the female quick-connect.
- Slide the lock onto the male tube end first. On locks with a slot, line the tube's raised bead (barb) up with the slot.
- Push the male tube end fully into the adapter.
- Thread the crescent lock back in and tighten it by its hex until snug. No separate clip is used.
Choosing the size
Quick-connect sizes go by the outside diameter of the male tube end. Measure the tube just behind the raised bead: 1/4" is about 6.4 mm, 5/16" about 7.9 mm (often called 8 mm), 3/8" about 9.5 mm (often called 10 mm) and 1/2" 12.7 mm. A female quick-connect only fits the male size it is made for.
Match the quick-connect size to the line or component you are connecting, then choose the other end to suit your hose or fitting.
EFI quick-connect adapter chart: all parts
| Part | Quick-connect size | Quick-connect gender | Other end | Other end size | Other end gender | Port | Angle | Retainer |
|---|---|---|---|---|---|---|---|---|
| QDA-14F4CL | 1/4" | Female | AN JIC | -4 | Male | Straight | Crescent lock | |
| QDA-14F6CL | 1/4" | Female | AN JIC | -6 | Male | Straight | Crescent lock | |
| QDA-56F6 | 5/16" | Female | AN JIC | -6 | Male | Straight | Clip | |
| QDA-56F6CL | 5/16" | Female | AN JIC | -6 | Male | Straight | Crescent lock | |
| QDA-56F6MP | 5/16" | Female | AN JIC | -6 | Male | 1/8" NPT | Straight | Crescent lock |
| QDA-56F8CL | 5/16" | Female | AN JIC | -8 | Male | Straight | Crescent lock | |
| QDA-38F10CL | 3/8" | Female | AN JIC | -10 | Male | Straight | Crescent lock | |
| QDA-38F6 | 3/8" | Female | AN JIC | -6 | Male | Straight | Clip | |
| QDA-38F6CL | 3/8" | Female | AN JIC | -6 | Male | Straight | Crescent lock | |
| QDA-38F6P | 3/8" | Female | AN JIC | -6 | Male | 1/8" NPT | Straight | Crescent lock |
| QDA-38F8 | 3/8" | Female | AN JIC | -8 | Male | Straight | Clip | |
| QDA-38F8CL | 3/8" | Female | AN JIC | -8 | Male | Straight | Crescent lock | |
| QDA-38F8P | 3/8" | Female | AN JIC | -8 | Male | 1/8" NPT | Straight | Crescent lock |
| QDA-12F10CL | 1/2" | Female | AN JIC | -10 | Male | Straight | Crescent lock | |
| QDA-12F8CL | 1/2" | Female | AN JIC | -8 | Male | Straight | Crescent lock | |
| QDA-9056F6 | 5/16" | Female | AN JIC | -6 | Male | 90° | Clip | |
| QDA-FF9056F6 | 5/16" | Female | AN JIC | -6 | Male | 90° radius bend | Crescent lock | |
| QDA-FF9056F8 | 5/16" | Female | AN JIC | -8 | Male | 90° radius bend | Crescent lock | |
| QDA-9038F6 | 3/8" | Female | AN JIC | -6 | Male | 90° | Clip | |
| QDA-9038F8 | 3/8" | Female | AN JIC | -8 | Male | 90° | Clip | |
| QDA-FF9038F6 | 3/8" | Female | AN JIC | -6 | Male | 90° radius bend | Crescent lock | |
| QDA-FF9038F8 | 3/8" | Female | AN JIC | -8 | Male | 90° radius bend | Crescent lock | |
| QDA-56F6FCL | 5/16" | Female | AN JIC | -6 | Female | Straight | Crescent lock | |
| QDA-38F8FCL | 3/8" | Female | AN JIC | -8 | Female | Straight | Crescent lock | |
| QDA-56FHB38 | 5/16" | Female | Hose barb | 3/8" | Straight | Plastic insert | ||
| QDA-56FHB56 | 5/16" | Female | Hose barb | 5/16" | Straight | Plastic insert | ||
| QDA-56FHB56CL | 5/16" | Female | Hose barb | 5/16" | Straight | Crescent lock | ||
| QDA-38FHB38 | 3/8" | Female | Hose barb | 3/8" | Straight | Plastic insert | ||
| QDA-38FHB38CL | 3/8" | Female | Hose barb | 3/8" | Straight | Crescent lock | ||
| QDA-38FHB56CL | 3/8" | Female | Hose barb | 5/16" | Straight | Crescent lock | ||
| FIT-T38QDF38 | 3/8" | Female | Tube compression | 3/8" | Straight | |||
| FIT-T38QDF9038 | 3/8" | Female | Tube compression | 3/8" | 90° | |||
| QDA-56F56CL | 5/16" | Female | Quick-connect | 5/16" | Female | Straight | Crescent lock | |
| QDA-38F38CL | 3/8" | Female | Quick-connect | 3/8" | Female | Straight | Crescent lock | |
| QDA-56F56MP | 5/16" | Female | Quick-connect | 5/16" | Male | 1/8" NPT | Straight | Crescent lock |
| QDA-56FM6RFP | 5/16" | Female | Quick-connect | 5/16" | Male | -6 AN ORB | Straight | Plastic insert |
| QDA-38F38MP | 3/8" | Female | Quick-connect | 3/8" | Male | 1/8" NPT | Straight | Crescent lock |
| QDA-38FM8RFP | 3/8" | Female | Quick-connect | 3/8" | Male | -8 AN ORB + 1/8" NPT | Straight | Crescent lock |
| QDA-14M4 | 1/4" | Male | AN JIC | -4 | Male | Straight | ||
| QDA-14M6 | 1/4" | Male | AN JIC | -6 | Male | Straight | ||
| QDA-56M6 | 5/16" | Male | AN JIC | -6 | Male | Straight | ||
| QDA-56M8 | 5/16" | Male | AN JIC | -8 | Male | Straight | ||
| QDA-38M10 | 3/8" | Male | AN JIC | -10 | Male | Straight | ||
| QDA-38M6 | 3/8" | Male | AN JIC | -6 | Male | Straight | ||
| QDA-38M8 | 3/8" | Male | AN JIC | -8 | Male | Straight | ||
| QDA-12M10 | 1/2" | Male | AN JIC | -10 | Male | Straight | ||
| QDA-12M6 | 1/2" | Male | AN JIC | -6 | Male | Straight | ||
| QDA-12M8 | 1/2" | Male | AN JIC | -8 | Male | Straight | ||
| QDA-9056M6 | 5/16" | Male | AN JIC | -6 | Male | 90° | ||
| QDA-9056M8 | 5/16" | Male | AN JIC | -8 | Male | 90° | ||
| QDA-9038M6 | 3/8" | Male | AN JIC | -6 | Male | 90° | ||
| QDA-9038M8 | 3/8" | Male | AN JIC | -8 | Male | 90° | ||
| QDA-38M6F | 3/8" | Male | AN JIC | -6 | Female | Straight | ||
| QDA-38M6FSS | 3/8" | Male | AN JIC | -6 | Female | Straight | ||
| QDA-38M10R | 3/8" | Male | AN ORB | -10 | Male | Straight | ||
| QDA-38M8R | 3/8" | Male | AN ORB | -8 | Male | Straight | ||
| QDA-12M10R | 1/2" | Male | AN ORB | -10 | Male | Straight | ||
| QDA-38M38MPT | 3/8" | Male | NPT | 3/8" | Male | Straight | ||
| QDA-56MB10S | 5/16" | Male | Multi-barb, short | 10 mm | Straight | |||
| QDA-56MB8S | 5/16" | Male | Multi-barb, short | 8 mm | Straight | |||
| QDA-375 | 3/8" | Male | Multi-barb | 10 mm | 90° | |||
| QDA-38MB11E | 3/8" | Male | Multi-barb, extended | 10 mm | Straight | |||
| QDA-38MB11M | 3/8" | Male | Multi-barb, medium | 10 mm | Straight | |||
| QDA-38MB11S | 3/8" | Male | Multi-barb, short | 10 mm | Straight | |||
| QDA-56M56 | 5/16" | Male | Quick-connect | 5/16" | Male | Straight | ||
| QDA-38M38 | 3/8" | Male | Quick-connect | 3/8" | Male | Straight | ||
| QDA-38P | 3/8" | Male | Plug (closed) | Straight | ||||
| QDA-56CL | 5/16" | Female | Crescent lock (retainer only) | |||||
| QDA-38CL | 3/8" | Female | Crescent lock (retainer only) | |||||
| QDA-INSERT56 | 5/16" | Female | Plastic insert (retainer only) | |||||
| QDA-INSERT38 | 3/8" | Female | Plastic insert (retainer only) |
Click a column heading to sort. The highlighted row is this part.
Specifications
| Part number | QDA-38FM8RFP |
| Type | In-line (female to male) |
| Quick-connect | 3/8" female quick-connect |
| Other end | 3/8" male quick-connect |
| Port | -8 AN ORB female port and 1/8" NPT gauge port |
| Angle | Straight |
| Retainer | Crescent-lock hex screw-in retainer |
| Seals | Viton O-rings |
| Material | 6061-T6 aluminum, black anodized |
| Fuel compatibility | Gasoline and E85. Not recommended for methanol or brake fluid. |
Frequently asked questions
How do I tell 5/16" from 3/8"?
Measure the outside diameter of the male tube just behind its raised bead: 5/16" is about 7.9 mm and 3/8" about 9.5 mm.
What does the crescent lock do?
It is the retainer. It threads into the back of the adapter over the male tube's bead and holds the line in. Fit it over the tube before pushing the tube in, then screw it home. A replacement is sold separately: QDA-56CL (5/16") or QDA-38CL (3/8").
Can I use it with E85?
Yes, with gasoline and E85. The Viton O-rings are not recommended for methanol or brake fluid.
Which other adapters are there?
The chart above lists every EFI quick-connect adapter we stock, with links. Sort it by quick-connect size or by the other end to find the one you need.
Questions and support
Not sure which adapter you need? Email [email protected] with your vehicle, the line sizes and a photo of the connection 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.
