Marine Outboard Fuel Primer Bulb 8mm 5/16" Hose 45mm Boat Petrol Diesel Engine
31957
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Fuel Primer Bulb 45mm (8mm/5/16" Hose)
Heavy-Duty Marine Fuel Line Primer
This premium manual inline fuel primer bulb is designed for outboard and inboard marine engines. Featuring a large 45mm diameter bulb, it allows for quick and efficient fuel delivery to the engine, even after long periods of inactivity. It is specifically engineered to fit standard 8mm (5/16") internal diameter fuel hoses, providing a secure, leak-free connection when used with appropriate clamps.
Key Features
- ✔ Dual Check Valves: Prevents fuel backflow for faster starts.
- ✔ Directional Arrow: Molded-in indicator for correct installation.
- ✔ High Capacity: 45mm bulb ensures rapid priming with fewer pumps.
- ✔ Fuel Resistance: Suitable for Petrol, Diesel, and E10 Ethanol blends.
Technical Specs
| Bulb Diameter | 45 mm (1.77 in) |
| Hose Bore Fit | 8 mm (5/16 in) |
| Total Length | Approx. 150 mm (5.9 in) |
| Material | High-Grade Rubber |
| Valve Type | One-Way Non-Return |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Universal | 8mm (5/16") ID Fuel Lines | Most common marine fuel systems |
| Yamaha | Outboard External Lines | Replacement for 8mm OEM bulbs |
| Mercury / Quicksilver | Standard Outboards | Compatible with 5/16" hoses |
| Suzuki / Honda / Hidea | Small to Mid-Size Engines | Universal inline fit |
OEM Cross Reference
| Yamaha OEM | 6YK-24360-73-00, 6YK-24360-72-00 |
| Mercury OEM | 8M0061875, 8M0061876 |
| Johnson / OMC | 5008605, 5008579 |
| Sierra | 18-8004EP-1, 18-8005EP |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
If your current fuel line has an internal diameter of 8mm (5/16 inch), this bulb will fit perfectly. We recommend using stainless steel hose clamps for a safe installation.
Can this be used with modern E10 fuel?
Yes, this bulb is constructed from specialized rubber compounds designed to resist the corrosive effects of ethanol-blended fuels such as E10 and E15.
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.
