8M0091784 Aftermarket Mercruiser Injector | Sawley’s Select Marine Parts

🔧 Product Description

Sawley's Select Marine Parts Aftermarket Mercury / MerCruiser Fuel Injector - Part Number: 8M0091784

A new aftermarket replacement fuel injector for selected Mercury and Mariner 25HP and 30HP EFI four-stroke outboards. This injector replaces Mercury / MerCruiser catalogue number 8M0091784 and supersedes from 898101T74 in Mercury replacement data.

⚙️ Key Features

• Sawley's Select Marine Parts aftermarket fuel injector

• Replaces Mercury / MerCruiser OEM part number 8M0091784

• Supersedes from Mercury injector 898101T74

• Used on Mercury / Mariner 25HP and 30HP EFI 3-cylinder four-stroke applications

• Also cross-referenced with selected Tohatsu MFS25 / MFS30 injector applications

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 898101T74 earlier Mercury fuel injector reference

• 898101T75 related fuel rail / injector assembly reference in some used-part listings

• 8M0091784 later Mercury fuel injector reference

OEM / Related Numbers:

• 8M0091784

• 898101T74

• 898101T75 related assembly / service listing reference

• 3AC-10300-0 Tohatsu related injector reference

• 3AC-10300-1 Tohatsu related injector reference

• Fuel injector

• EFI injector

• 25HP EFI injector

• 30HP EFI injector

• Mercury 3-cylinder injector

Aftermarket / Verified Equivalents:

• Recmar-style / RCMA replacement reference WI-1008

• Aftermarket replacement for 898101T74 / 8M0091784

• Tohatsu-related aftermarket replacement for 3AC-10300-0 / 3AC-10300-1 where specified

🚤 Compatibility

Commonly used on:

• Mercury / Mariner 25HP and 30HP EFI three-cylinder four-stroke fuel systems

Typically suits:

• Engine models:

• Mercury 25 EFI 3-cylinder 4-stroke - serial 0R106999 to 1R162636

• Mercury 25 EFI 3-cylinder 4-stroke - serial 0R106966 and up in replacement listings

• Mercury 25 EFI Jet 3-cylinder 4-stroke - serial 0R165086 to 1R162636

• Mercury 30 EFI 3-cylinder 4-stroke - serial 0R106999 to 1R162636

• Mercury 30 EFI 3-cylinder 4-stroke - serial 0R106966 and up in replacement listings

• Mercury F25E1PT used-part reference example - serial 0R189611

• Mercury / Mariner 25HP EFI 3-cylinder four-stroke applications using 898101T74 / 8M0091784

• Mercury / Mariner 30HP EFI 3-cylinder four-stroke applications using 898101T74 / 8M0091784

• Tohatsu MFS25A fuel-injection applications using related 3AC-10300 series injector

• Tohatsu MFS25B fuel-injection applications using related 3AC-10300 series injector

• Tohatsu MFS25C fuel-injection applications using related 3AC-10300 series injector

• Tohatsu MFS30A fuel-injection applications using related 3AC-10300 series injector

• Tohatsu MFS30B fuel-injection applications using related 3AC-10300 series injector

• Tohatsu MFS30C fuel-injection applications using related 3AC-10300 series injector

• HP Range: 25HP - 30HP

• Engine Type: Mercury / Mariner EFI three-cylinder four-stroke outboard fuel system

• Year Range: approximately 2006 - 2021 depending on model and serial range

• Serial Note: Match by exact Mercury serial number, 3-cylinder EFI fuel rail, injector connector and original injector number before installation.

🔌 Function

The fuel injector meters and sprays fuel into the intake system so the ECU can control fuel delivery for starting, idle, acceleration and running load.

Common signs of failure:

• Hard starting

• Rough idle

• Misfire on one cylinder

• Hesitation under acceleration

• Poor fuel economy

• Fuel smell or injector leakage

• Lean or rich cylinder fault

• Injector spray pattern or balance test fails

📦 Condition

• Aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging