Marine outboard fuel primer bulb for 8mm 5/16 inch hose
Fuel Primer Bulb Ø45mm with Ø8mm Hose - 4Boats
Fuel Primer Bulb Ø45mm with Ø8mm Hose - 4Boats
Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine
Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine
Marine outboard fuel primer bulb for 8mm 5/16 inch hose
Fuel Primer Bulb Ø45mm with Ø8mm Hose - 4Boats
Fuel Primer Bulb Ø45mm with Ø8mm Hose - 4Boats
Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine
Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine

Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine

31957s

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£9.88
/
Tax included.

Fuel Primer Bulb Ø45mm for Ø8mm (5/16") Hose

Marine Fuel Line Primer

This manual inline fuel primer bulb is designed for outboard and inboard marine engines. The Ø45mm bulb lets you prime the fuel line quickly, even after long periods of inactivity. It fits Ø8mm (5/16") internal diameter fuel hoses and gives a secure connection when used with appropriate clamps.

RELIABILITY: Rubber bulb with built-in non-return valves to prevent fuel backflow.

Key Features

  • ✔ Check Valves: Prevent fuel backflow for easier starts.
  • ✔ Directional Arrow: Moulded-in indicator for correct installation.
  • ✔ Ø45mm Bulb: Comfortable, effective priming.
  • ✔ Ø8mm Hose Fit: For 5/16" ID fuel lines.

Technical Specs

Bulb Diameter Ø45 mm
Hose Bore Fit Ø8 mm (5/16 in)
Material Rubber
Valve Type Non-Return
4Boats SKU 31957

Compatibility / Fitment Guide

Make/System Model/Application Notes
Universal Ø8mm (5/16") ID Fuel Lines Common marine fuel systems
Outboards Yamaha, Mercury, Suzuki, Honda and others Where the fuel line is 8mm ID

OEM Cross Reference

Lalizas code 31957
4Boats SKU 31957

Questions & Answers

Is this a genuine original part?

Yes, this is a genuine Lalizas fuel primer bulb, code 31957.

How do I know if it is compatible?

If your fuel line has an internal diameter of 8mm (5/16 inch), this bulb will fit. We recommend stainless steel hose clamps for a safe installation.

Which way round does it fit?

Follow the moulded arrow: it must point towards the engine.

Note: Please verify your fuel hose internal diameter before ordering. For 10mm (3/8") or 6mm (1/4") lines, please see our other listings at 4boats.co.uk.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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