PRODUCT DETAILS
Low Pressure Electric Fuel Boost Pump – Mercury / Mariner OptiMax DFI Outboards
Marine-grade aftermarket replacement electric fuel boost pump for selected Mercury and Mariner 75–300 HP 2-stroke DFI outboard engines.
Designed to provide low-pressure fuel delivery within the engine's fuel vapour separator (VST) system, supporting reliable operation of the direct fuel injection system.
Fitment – UK & European Mercury / Mariner Outboards
2-Stroke OptiMax / DFI Engines
1.5L – 3-Cylinder Models
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75 HP – OptiMax DFI
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80 HP – Jet DFI
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90 HP – OptiMax DFI
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115 HP – OptiMax DFI
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115 HP – Pro XS DFI
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125 HP – Selected DFI models
3.0L – V6 Models
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200 HP – OptiMax DFI / DTS
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200 HP – Pro XS DFI
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225 HP – OptiMax DFI / DTS
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225 HP – Pro XS DFI
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250 HP – OptiMax DFI
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250 HP – Pro XS DFI
Additional Selected DFI Applications
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225 HP – Sport XS
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250 HP – Sport XS
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300 HP – XS DFI
Important: Not every engine within the listed horsepower range uses this pump. Applications depend on engine model, serial number and VST configuration.
Replaces Mercury / Mariner Part Numbers
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888733T02
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888733T1
OEM part numbers are used for identification purposes only.
Product Details
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Condition: New
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Product: Electric Fuel Boost Pump
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Type: Low Pressure Fuel Pump
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Quality: Marine-Grade Aftermarket
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Application: Mercury / Mariner Outboards
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Engine Type: 2-Stroke DFI / OptiMax
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Horsepower: 75–300 HP (selected models)
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Installation Location: Fuel Vapour Separator (VST)
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Quantity: 1 Fuel Pump
Important – Check Compatibility
Please confirm your engine model, serial number, original fuel pump reference and fuel system configuration before ordering.
This is a low-pressure fuel boost pump, not the high-pressure DFI fuel pump.
If the part looks the same as yours, this does not always mean it is the correct part for your outboard.
Why Buy From SSI Marine?
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Workshop-tested aftermarket & OEM-spec parts
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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 available
Buyer Responsibility: Please confirm compatibility before purchasing. Contact SSI Marine with your engine details if unsure.
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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