Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats
Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats
Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats
Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats
Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats
Outboard One Way Valve Universal Primer Bulb, 5/16'', 8mm For Tohatsu Mercury Mariner Fuel Line - 4Boats

Outboard One One-Way Primer Bulb 8mm (5/16) Tohatsu/Mercury | 4Boats

MMS-164

  • Dispatched in 2-3 days
  • 30 Day Return Policy
  • Low stock - 2 items left
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.
£14.99
/
Tax included.

Outboard One one-way primer bulb for reliable fuel delivery to outboard engines; marine-grade, ethanol-compatible design for 8mm (5/16) fuel lines to help maintain optimal engine efficiency.

  • Compatible with ethanol-blended fuels – works with all modern fuel formulations
  • Fuel line compatibility: 8mm (5/16)
  • Valve type: one-way to prevent backflow
  • Material: high-quality marine-grade rubber for long life
  • Stainless steel stepless clamps for a secure, leak-free connection
  • Suitable for Tohatsu, Mercury, Mariner and other outboard engines
  • Durable construction resists vacuum collapse and ballooning under pressure
  • Important note: If unsure about compatibility, please double-check your existing part or contact customer support

For the products under £150 the shipping is £6.99.

Free delivery for the most items over £150.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

You may also like

Recently viewed

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
John Lauchlan (john42pic)
Primer bulb.

Since fitting the primer bulb it has become very very soft I hope rubber is not deteriorating on the inside, otherwise it's doing it's job.

Why choose us

Untitled_1080_x_1080_px_1 - 4Boats

ITS ALL ABOUT THE QUALITY

We source the best products from the Top suppliers only. We’ve taken years of feedback and have doubled down on providing the best service.

Untitled_1080_x_1080_px_2 - 4Boats

TEAMWORK MAKES THE DREAMWORK

Our Suppliers and Partners are joining us in our commitment to challenge the way this industry operates. From product sourcing to fulfilling, they’re the best in the business.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats

YOU MATTER TO US.

All your orders are personally checked by a member of 4 BOATS and we make sure your orders are dispatched quickly so it arrives to your doorstep ASAP