PRODUCT DETAILS
Crosseven Universal Fuel Primer Bulb – 10mm / 3/8"
High-quality Crosseven marine fuel primer bulb designed for use with approximately 10 mm / 3/8" internal diameter fuel hose.
Designed for outboard and marine petrol fuel systems, the primer bulb allows the fuel line to be manually primed, helping draw fuel from the tank towards the engine before starting.
The Crosseven P206658 is the larger 10 mm version and incorporates non-return / one-way valves to help maintain the fuel column within the fuel system.
Crosseven Part Number
P206658
Suitable For
Suitable for marine and outboard fuel systems using:
10 mm / 3/8" Fuel Hose
Can be used on compatible fuel systems for many outboard brands, including:
- Mercury
- Mariner
- Yamaha
- Suzuki
- Honda
- Tohatsu
- Johnson
- Evinrude
- OMC
- Other compatible marine fuel systems
Important
This is a universal marine primer bulb based primarily on fuel hose size and fuel-system configuration.
Compatibility should be determined by the internal diameter of the fuel hose and fuel-system requirements, rather than engine brand or horsepower alone.
Fuel Hose Size
10 mm / 3/8" Internal Diameter Fuel Hose
3/8" = approximately 9.5 mm
Commonly referred to as 10 mm / 3/8" marine fuel hose.
Crosseven P206658 is specifically listed as the 10 mm version.
Please measure the internal diameter of your existing fuel hose before ordering.
Product / Cross-Reference Numbers
Crosseven
- P206658
Mercury / Mariner References
- 13330A3
- 13330Q3
Johnson / Evinrude References
- 174512
- 5008586
- 176444
- 755639
These OEM numbers are useful for identification/reference; compatibility should still be checked against the particular fuel system.
Product Features
- Crosseven branded marine product
- Universal marine fuel primer bulb
- 10 mm / 3/8" fuel hose connection
- Integrated non-return / one-way valves
- Hydrocarbon-resistant elastomer construction
- Designed for petrol outboard fuel systems
- Helps prime the fuel system before starting
- Helps maintain the fuel column after priming
- Suitable for compatible outboard fuel installations
- Ideal replacement for worn, cracked or hardened primer bulbs
- Marine fuel-system component
- New
- UK stock
One-Way Fuel Valve
The primer bulb incorporates non-return valves that allow fuel to flow in the required direction while helping prevent it from flowing back towards the fuel tank.
Always install the primer bulb in the correct direction.
Check the fuel-flow arrow on the primer bulb before installation.
The arrow should point in the direction of fuel flow:
FUEL TANK → PRIMER BULB → ENGINE
Important – Check Your Fuel Hose Size
This version is for approximately 10 mm / 3/8" fuel hose.
Please check the INTERNAL diameter of your existing fuel hose before purchasing.
Crosseven also has the smaller 8 mm version:
P204867 → 8 mm / 5/16"
This listing:
P206658 → 10 mm / 3/8"
The two primer bulbs can look very similar, so please check your hose size carefully before ordering. The two product sizes are separately listed as 8 mm P204867 and 10 mm P206658.
Installation
When installing the primer bulb:
- Confirm your fuel hose is approximately 10 mm / 3/8" ID
- Check the direction of fuel flow
- Install with the arrow pointing towards the engine
- Push the fuel hose fully onto the connections
- Secure the hose correctly
- Prime the fuel system
- Check all connections carefully for fuel leaks before operating the engine
Any fuel hose that is cracked, hardened, damaged or deteriorated should also be replaced.
Important – Please Check Compatibility
This is a universal marine component and should be selected according to your fuel hose size and fuel-system configuration.
Before purchasing, please confirm:
- Fuel hose internal diameter is approximately 10 mm / 3/8"
- Primer bulb configuration matches your installation
- Fuel-flow direction is correct
- Product is suitable for your particular fuel system
If the part looks the same as yours, this does not always mean it is the correct one for your outboard or fuel system.
If you are unsure, please contact SSI Marine before purchasing.
Why Buy From SSI Marine?
- Quality branded marine parts
- Workshop-tested products
- More than 10 years supplying outboard parts
- UK stock
- Same working day dispatch before 1 PM Monday–Friday
- Royal Mail Tracked 24
- Technical support from experienced outboard specialists
- Collection available from Leigh, Greater Manchester
- Workshop open Monday–Friday, 9 AM–5 PM
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.
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