High Pressure Electric Fuel Pump – Mercury / Mariner OptiMax DFI Outboards

Marine-grade aftermarket replacement high-pressure electric fuel pump for selected Mercury and Mariner 75–300 HP 2-stroke OptiMax / DFI outboard engines.

Designed for installation within the fuel vapour separator (VST) system, supplying high-pressure fuel to the engine's direct fuel injection system.

Fitment – UK & European Mercury / Mariner Outboards

2-Stroke OptiMax / DFI Engines

1.5L – 3-Cylinder Models

75 HP – OptiMax DFI
80 HP – Jet DFI
90 HP – OptiMax DFI
115 HP – OptiMax DFI
115 HP – Pro XS DFI
125 HP – Selected DFI models

2.5L DFI Models

2.5 XS – Selected Racing DFI engines

3.0L – V6 Models

200 HP – OptiMax DFI / DTS
200 HP – Pro XS DFI
225 HP – OptiMax DFI / DTS
225 HP – Pro XS DFI
250 HP – OptiMax DFI
250 HP – Pro XS DFI

Additional Selected DFI Applications

250 XS – Racing DFI
300 XS – Racing DFI

Important: Applications vary by engine model, serial number and VST configuration. Not every engine within the listed horsepower range uses this fuel pump.

Replaces Mercury / Mariner Part Numbers

888725T02
888725T1

OEM part numbers are used for identification purposes only.

Product Details

Condition: New
Product: High Pressure Electric Fuel Pump
Quality: Marine-Grade Aftermarket
Application: Mercury / Mariner Outboards
Engine Type: 2-Stroke OptiMax / DFI
Horsepower: 75–300 HP (selected models)
Installation Location: Fuel Vapour Separator (VST)
Quantity: 1 Fuel Pump

Important – Check Compatibility

Please confirm your engine model, serial number, original fuel pump reference and VST configuration before ordering.

This is the HIGH-PRESSURE fuel pump, not the low-pressure boost 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?

Workshop-tested aftermarket & OEM-spec parts
Same-day dispatch before 1 PM Monday–Friday
Royal Mail Tracked 24
UK stock – collection from Leigh, Greater Manchester
Technical support available

Buyer Responsibility: Please confirm compatibility before purchasing. Contact SSI Marine with your engine details if unsure.

75–300 HP Mercury Mariner Outboard High Pressure Fuel Pump OptiMax DFI 888725T02