Quick Summary
The H-veenjor 3/8" Marine Primer Bulb is a manual fuel line hand primer bulb for outboard motor use. It is described as a black rubber fuel transfer and vacuum pump with a directional arrow for installation.
The main checks for this product are line fit, intended fuel system, and the exact liquid use you plan to put it to. The listed line fit is 10 mm or 11 mm, so that measurement matters more than the general product name.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | H-veenjor. Useful for matching the product across offers. |
| Product type | Marine primer bulb / hand primer bulb. This is the main item type. |
| Size | 3/8". Check this against the hose size you need. |
| Line fit | 10 mm or 11 mm fuel lines. This is the key fit check before buying. |
| Color | Black. Helpful for visual matching. |
| Installation cue | Directional arrow. The arrow helps with routing the bulb in the intended direction. |
What to Compare Before Buying
- Hose size: The stated fit is 10 mm or 11 mm fuel lines, so confirm your line size before choosing an offer.
- Fuel system: It is described for carburetors and low-pressure fuel systems, so compare that with your setup.
- Vehicle or engine setup: The product is described for outboard and inboard engines, so make sure that matches the equipment you have.
- Liquid use: The naming mentions gas, gasoline, diesel, and water, so confirm the exact liquid application you need before purchase.
Before You Decide
Confirm the hose size, the intended fuel system, and the exact liquid application before you choose this bulb. If your setup does not match the stated 10 mm or 11 mm line fit, look for a different size.





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