Go To Fuel Line Hand Primer Bulb 5/16 Inch 8mm Universal Transfer Tool For Marine Boats Inboards Outboards RVs Cars Motorcycles Engine Gasoline Diesel Water Oil Not For Corrosive Liquids

Single Pack Hand Primer Bulb 5/16 in (8mm) Universal Fuel Transfer
✔️ 5/16in (8 mm) fittings, one-way valve, rubber & aluminum

This hand primer bulb is a manual fuel transfer tool designed for marine engines, cars, RVs, motorcycles, and other low-pressure fuel systems.

✅ Transfers WATER, GASOLINE, DIESEL, KEROSENE, and LIGHT OILS; not for corrosive liquids
✅ Fits standard 5/16 in (8 mm) input/output fittings for wide compatibility
✅ Built-in ONE-WAY VALVE speeds priming and reduces spills
✅ Durable rubber body with lightweight aluminum alloy for leak-proof use
✅ Easy setup: keep fuel tank higher than source; insert pipe into tank
✅ Suitable for boats, cars, RVs, motorcycles, and small engines

💡 What is a hand primer bulb used for in fuel transfer systems?

This handy tool makes it easy to prime and move fuel in tight spaces and low pressure lines.

- Handy for priming fuel lines in boats, cars, RVs and small engines
- Supports standard 5/16 in (8 mm) fittings for broad compatibility
- Speeds priming with a built in one way valve to reduce spills
- Works for low-pressure fuel transfers without the need for power tools