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

The OneFastShop Single Outlet Fuel Pump Fitting is a precision-machined adapter that converts the barbed outlet of your Walbro fuel pump into a 7.89mm (5/16") SAE male quick-connect port - 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.

Key Features

• 7.89mm (5/16") SAE male quick-connect output - fits factory-style fuel hardlines
• 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.

Building a dual-pump setup? Feed both pumps into one line with the OneFastShop Dual Fuel Pump Y-Line.

Specifications

What's Included

• 1x Single 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 — 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