The OneFastShop Dual Fuel Pump Y-Line combines the output of two in-tank fuel pumps into a single feed line. Two female 7.89mm quick-connect inlets accept the male QC outlets from each pump, and a single male 7.89mm quick-connect outlet feeds the car's factory fuel hardline. OEM-style corrugated flexible fuel line construction with a precision-molded Y-junction body - no stress points at the split.
Designed for dual in-tank LPFP setups on high-power builds. No cutting, no barb fittings, no hose clamps - the quick-connect ends seat and lock the same way factory fuel lines do.
Key Features
- 2-into-1 Y-line combiner for dual fuel pump setups
- OEM-style corrugated flexible fuel line construction
- Precision-molded Y-junction body - no stress points at the split
- Quick-connect ends seat and lock like factory fuel lines
- No cutting, no barb fittings, no hose clamps required
- Compatible with gasoline, E85, ethanol, and race fuels
Fitment
Universal - fitment is based on connector size, not vehicle. This Y-Line fits any dual in-tank fuel pump setup where both pump outlets present a 7.89mm male quick-connect.
Building a Walbro 450, 525, or 535 (TI Automotive F90000267 / F90000274 / F90000285 / F90000295) dual-pump setup? Pair each pump with the OneFastShop Single or Dual Outlet Fitting to convert the pump outlet to a 7.89mm male quick-connect, then plug both pumps into this Y-Line.
Specifications
| Part Number | OFSFH |
| Inlet Connections | 2x Female 7.89mm Quick Connect |
| Outlet Connection | 1x Male 7.89mm Quick Connect |
| Configuration | Y-Line (2 inlet / 1 outlet) |
| Line Construction | OEM-style corrugated flexible fuel line |
| Junction Body | Precision-molded Y-connector |
| Fuel Compatibility | Gasoline, E85, ethanol blends, race fuels |
What's Included
- 1x Y-Line fuel connector assembly (7.89mm)
Fuel pumps and mounting hardware not included.
Does NOT Fit
This Y-line is specifically designed for 7.89mm male quick-connect pump outlets. It will NOT fit:
- 8mm barb fittings
- 6mm fittings
- AN-style fittings (-6 AN, -8 AN, etc.)
- Push-lock style fittings
- Any pump outlet that is not 7.89mm quick connect
Verify your pump outlet type before purchasing.
Read before you buy. These guides cover fitment, what to expect, and how to install.
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Some items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping, and original shipping is not refunded. All waived if the item is defective or we made the error.
- Installed or used parts cannot be returned. Confirm fitment before you install.
- Product images may be representative. The part number and specifications in the listing are what ships.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy