Primer Bulb – 5/16 Inch — 07494
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Primer Bulb – 5/16 Inch
Keep your engine starting reliably with this 5/16-inch primer bulb, designed for use in marine fuel lines. Built to handle the demands of on-water use, this bulb maintains a firm, consistent prime so your engine fires up quickly — whether you're heading out at dawn or returning after a long day on the water.
Key Features
- 5/16-inch (7.9 mm) inner diameter — fits standard marine fuel line
- Durable construction rated for gasoline and ethanol-blended fuels
- Self-priming squeeze bulb with integrated check valves for one-way fuel flow
- UV- and fuel-resistant materials for extended service life
- Compact and lightweight — easy to replace in the field
Parts Desk Insights
Best Use Case: Ideal as a direct replacement for worn or cracked primer bulbs on outboard and inboard/outboard engines using 5/16-inch fuel line. Commonly used during seasonal recommissioning, fuel line replacement, or when an engine is slow to prime or fails to hold pressure. Verify your existing fuel line inner diameter before ordering — this bulb is sized for 5/16-inch (7.9 mm) line only.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.