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
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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.
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.
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