Walbro GSL392 Inline Fuel Pump Installation Kit
400-920
The Walbro GSL392 Inline Fuel Pump Installation Kit provides the mounting hardware needed to securely install a Walbro 255 LPH inline fuel pump in custom EFI fuel systems. The kit includes a foam insulating sleeve and two steel mounting clamps sized for the GSL392 pump body, making it a simple solution for LS swaps, off-road vehicles, race cars, and fuel cell installations.
The foam sleeve isolates the pump from the mounting surface to help reduce vibration and noise transfer, while the steel clamps keep the pump securely positioned during vehicle movement and off-road use. Properly supporting the pump also helps reduce unnecessary movement and stress on the fuel lines and fittings in custom fuel-system installations.
Includes:
- (1) Foam Insulating Sleeve
- (2) Steel Fuel Pump Mounting Clamps
Note: Fuel pump is not included. This is a mounting kit for the Walbro GSL392 255 LPH Inline Fuel Pump.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Walbro |
| Part Number | 400-920 |
| Product Type | Inline Fuel Pump Mounting Kit |
| Designed For | Walbro GSL392 Inline Fuel Pump |
| Mounting Style | External / Inline |
| Mounting Clamps | (2) Steel Clamps |
| Isolation Sleeve | Foam |
| Approximate Pump Diameter | 2.36" with Sleeve Installed |
| Fuel Pump Included | No |
Fitment
Designed For:
- Walbro GSL392 255 LPH Inline Fuel Pump
- External inline EFI fuel pump installations
- Custom fuel cell and EFI fuel systems
Common Applications:
- LS swaps
- Rock crawlers and rock bouncers
- Off-road buggies
- Race vehicles
- Custom chassis builds
Installation Notes:
- Install the foam sleeve around the pump before securing it with the mounting clamps.
- Mount the pump securely to a rigid chassis, frame, or fabricated mounting surface.
- Position the pump close to the fuel tank and below the fuel outlet when the system layout allows.
- Keep the pump and fuel lines away from exhaust heat, sharp edges, and moving suspension components.
- Support fuel lines so their weight is not carried by the pump fittings.
FAQ
Does this kit include the Walbro fuel pump?
No. This kit includes the foam insulating sleeve and steel mounting clamps only. The Walbro GSL392 255 LPH Inline Fuel Pump is sold separately.
Why does the fuel pump need a foam sleeve?
The foam sleeve helps isolate the electric fuel pump from the chassis or mounting bracket. This reduces vibration and pump noise transferred into the vehicle while allowing the mounting clamps to hold the pump securely.
Where should an inline fuel pump be mounted?
An external inline fuel pump should generally be mounted close to the fuel tank and positioned to maintain a reliable fuel supply to the pump. The exact location depends on the fuel cell, chassis, plumbing, exhaust, and suspension layout.
Can this mounting kit be used in an off-road vehicle?
Yes. Secure pump mounting is especially important in rock crawlers, buggies, race vehicles, and other off-road builds where vibration and chassis movement can place additional stress on fuel-system components.
Should the fuel lines support the weight of the pump?
No. The pump should be independently secured with its mounting hardware, and the fuel lines should also be properly supported. This helps prevent vibration and vehicle movement from placing unnecessary loads on the pump fittings and fuel lines.
