Sierra 800410EP1 Primer Bulb, 5/16", 10/pk
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra 800410EP1 primer bulb for marine fuel systems—built for low-permeation fuel performance and designed for reliable priming on the water.
Key Features
- Designed to meet EPA requirements for low fuel permeation (effective 1/1/2011).
- Superior resistance to UV, ozone, and alcohol-enhanced fuel.
- Features check valves with a stainless spring and Viton balls to help resist sticking.
Intended Use
- Marine outboard and inboard fuel systems that use a 5/16" fuel primer bulb / hose barb style connection
- Replacement primer bulb for fuel feed systems where an EPA/CARB-compliant bulb style is specified
- Fuel-air systems using primer bulbs for easier startup and fuel delivery (application varies by model)
Product Details
- Brand: Sierra
- Product: 800410EP1 Primer Bulb
- Hose size: 5/16"
- Quantity: 10 bulbs per pack
- Valve construction: stainless spring and Viton balls (double check style)
Parts Desk Insights
Best Use Case: A practical choice when you need a UV/ozone/alcohol-resistant primer bulb assembly for dependable fuel priming in a marine environment.
Common Issues: If the bulb won’t hold prime or feels stiff, check for proper hose seating and good clamp contact at the barbs, and inspect for fuel-line wear or air leaks near the primer bulb fittings.
Related Products & Accessories
- Sierra Primer Bulbs (Fuel System) - Browse the Fuel Lines & Hoses collection for additional Sierra primer bulb options and related fuel-line fittings.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.