Walbro 450 525 535 Hellcat Dual Outlet Fuel Fitting Splitter - 7.89mm QC

The OneFastShop Dual Outlet Fuel Pump Fitting is a precision-machined adapter that converts the barbed outlet of your Walbro fuel pump into two 7.89mm (5/16") SAE male quick-connect ports - both mating directly into factory-style 7.89mm female quick-connect fuel hardlines. No pump modification, no hose clamps, no adapters.

The fitting slips over the pump's barbed outlet and is secured with a locking ring. An internal Viton O-ring creates a leak-proof seal compatible with gasoline, ethanol (E85), and all common race fuels. Fully reusable across multiple installations.

How It's Used

This fitting works in two configurations:

• Single-pump splitter: One pump's output feeds both 7.89mm ports - for dual-feed lines, parallel fuel rails, or high-flow setups that split a single pump into two paths.
• Dual-pump combiner: Mount the fitting on Pump A and route Pump B's output into one of the 7.89mm ports. Both pumps' flow combines through the fitting and feeds out the remaining port - the classic setup for dual in-tank pumps on high-power builds.

Key Features

• Two 7.89mm (5/16") SAE male quick-connect output ports
• Works as a splitter OR a dual-pump combiner
• Slips over the pump's barbed outlet - secured with a locking ring
• Requires no pump modification - clamp-free, adapter-free install
• Internal Viton O-ring for a leak-free seal under high pressure
• CNC-machined from 6061 aluminum, black anodized finish
• Compatible with gasoline, E85, ethanol, methanol, and race fuels
• 100% reusable - supports multiple installations

Pump Compatibility

Designed for the Walbro / TI Automotive 39/50 DCSS pump family. These pumps share the same external dimensions, barbed outlet design, and install pattern:

Verify your pump matches one of the part numbers above before ordering.

Running it as a dual-pump combiner? Put a 7.89mm QC outlet on your second pump with the OneFastShop Single Outlet Fitting, or feed both pumps into one line with the Dual Fuel Pump Y-Line.

Specifications

What's Included

• 1x Dual outlet fitting body
• 1x Locking ring
• 1x Viton O-ring (pre-installed)

Fuel pump and fuel lines not included.

Does NOT Fit

This fitting is engineered exclusively for the Walbro 39/50 DCSS pump family. It will NOT fit:

• Walbro 255 LPH (GSS340/341/342) - different outlet design
• Walbro 350 LPH (GSS350G3/351G3/352G3) - different outlet design
• DeatschWerks pumps (DW200, DW300, DW340, DW420, DW400, DW440)
• Aeromotive Stealth 340 (11140)
• Bosch 044 inline pumps
• Walbro F2000169 inline pumps
• Any pump outside the Walbro 39/50 DCSS family

Verify your pump matches one of the part numbers in the compatibility table before ordering.