PRODUCT DETAILS
Fuel Pump Diaphragm – Yamaha 25 HP & 30 HP 3-Cylinder 2-Stroke Outboards
Quality marine-grade aftermarket fuel pump diaphragm for selected Yamaha 25 HP and 30 HP 3-cylinder 2-stroke outboard engines.
Designed to replace a worn or damaged fuel pump diaphragm, helping restore consistent fuel delivery, reliable starting and smooth engine operation.
Fitment – Yamaha Outboards
| HP | Engine Configuration | Selected Years |
|---|---|---|
| 25 HP | 3-Cylinder, 2-Stroke | 1997–2002 |
| 30 HP | 3-Cylinder, 2-Stroke | 1987–2002 |
Selected model references supplied for identification:
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25 HP: 25MHV3, 25MLHV3, 25MLHW3, 25MLHX3, 25MSH3A, 25MSHA3, 25MSHV3, 25MSHW3, 25MSHX3, 25MSHY3, 25MSHZ3
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30 HP: 30EL, 30ES, 30L, 30MLH, 30MSH, 30S and selected C30 variants
Important: The supplied model references include market-specific Yamaha designations. They have not all been verified as UK/European applications.
This diaphragm is intended only for engines using the corresponding fuel pump assembly. Not every 25 HP or 30 HP Yamaha within these years uses the same diaphragm.
Replaces Yamaha Part Numbers
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6J8-24471-00
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6J8-24471-00-00
Aftermarket Cross-Reference:
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Sierra 18-7841
OEM and aftermarket references are provided for identification purposes only.
Product Details
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Condition: New
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Product: Fuel Pump Diaphragm
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Quality: Marine-Grade Aftermarket
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Application: Yamaha 25 HP / 30 HP Outboards
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Engine Type: 2-Stroke
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Cylinder Configuration: 3-Cylinder
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Main Reference: 6J8-24471-00
Please note: This listing is for a fuel pump diaphragm, not a complete fuel pump assembly.
Please check the product photographs for the exact components supplied.
Important – Check Compatibility
Please confirm your Yamaha engine model, year, serial number and original fuel pump diaphragm part number before ordering.
If the part looks the same as yours, this does not always mean it is the correct part for your outboard.
If unsure, contact SSI Marine with your engine details before purchasing.
Why Buy From SSI Marine?
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Workshop-tested aftermarket and genuine parts
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Over 10,000 genuine and aftermarket items stocked
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Same-day dispatch before 1 PM Monday–Friday
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Royal Mail Tracked 24
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UK stock – collection from Leigh, Greater Manchester
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Technical support from experienced marine engineers
Buyer Responsibility: Please confirm compatibility before purchasing.
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £7: 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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