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.

Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.

Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.