Dual Fuel Pump Y-Line 7.89mm Quick Connect - Walbro 450 525 535

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

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.

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• 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. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy