Didn’t get to select L or R side when ordering.
Didn’t get to select L or R side when ordering.
The hose and fittings are nice quality. Their ability to get stuff shipped out quickly dose not happen.
It took a week to get my order to shipping.
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Walbro (Ti-Automotive) 255 LPh Inline fuel pump GSL392
$197.00
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Walbro (Ti Automotive) 255 LPH Inline Fuel Pump — GSL392
A proven external EFI pump for LS swaps and EFI conversions. The GSL392 delivers up to 255 LPH with consistent pressure for modern systems like Holley Sniper, ACES EFI, FiTech, and OEM-style port injection. Compact, reliable, and easy to plumb with AN adapters.
What’s included
- Walbro/Ti Automotive GSL392 255 LPH inline fuel pump (12 VDC)
Adapters sold separately: pump has 10 mm × 1.0 threaded ports (inlet & outlet). Use metric-to-AN adapters to connect PTFE AN hose.
- 255 LPH inline design: reliable flow for EFI swaps and street performance.
- EFI-ready pressure: designed for systems targeting up to ~60 PSI base pressure.
- Universal mounting: compact body fits most frame-rail layouts with isolator clamps.
- AN-friendly: plumbs cleanly with 10 mm × 1.0 → AN adapters and PTFE hose.
Performance & specs
| Flow rate | 255 LPH (inline) |
| Max pressure | Up to ~60 PSI |
| Voltage | 12 VDC |
| Ports | 10 mm × 1.0 inlet & outlet (adapters required for AN) |
| Pump type | External inline EFI pump |
| Compatibility | LS swaps, Holley Sniper, ACES EFI, FiTech, and similar EFI systems |
Ideal use cases
- LS engine swaps needing a robust external pump solution
- EFI conversions on classics where in-tank retrofits are not preferred
- Street builds prioritizing reliability and easy service access
Install notes:
- Mount low, near the tank, with rubber isolator clamps to reduce noise and aid priming.
- Use a coarse pre-filter (40–100 μm) before the pump and a 10 micron or finer (≤10 μm) filter after the pump.
- Adapt 10 mm × 1.0 ports to AN using metric-to-AN adapters, then plumb with PTFE AN hose & ends.
- After assembly, pressure-test and verify base fuel pressure at the rail.
PTFE hose tip: wrap the cut area tightly with tape before cutting with shears to control braid fray, then remove tape after fitting the olive/ferrule. See our install guide.
Recommended add-ons
- EFI fuel filters (≤10 μm)
- 10 mm × 1.0 → AN adapter fittings (to AN-6 / AN-8)
- PTFE hose & AN hose-end bundles
- AN hose install tools (aluminum AN wrench & vice jaws)
- Mounting clamps & hardware
- Gauge / pressure port AN adapter
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Quick FAQs
What fittings do I need to run AN hose?
Use 10 mm × 1.0 to AN-6 or AN-8 adapters on the pump’s ports, then connect PTFE AN hose ends.
Is a 255 LPH inline pump enough for my LS swap?
For many naturally aspirated LS builds and common EFI conversions, yes. For boosted or E85 applications, assess total fuel demand and consider higher flow.
Can I run this without a pre-filter?
We recommend a coarse pre-filter (40–100 μm) before the pump and a ≤10 μm filter after the pump to protect injectors and the regulator.
Warranty
Covered by the manufacturer’s warranty (Walbro/Ti Automotive). Terms and duration per manufacturer policy. We’ll help facilitate claims—contact support with your order number and photos.
Shipping
Fast shipping. Free shipping on orders $99+. Rates and options shown at checkout.
Returns
Hassle-free returns on new, unused items in original packaging per our Returns Policy.
Quality
Chosen to integrate cleanly with PTFE AN hose systems for reliable EFI performance.