Aftermarket Mercury 75-80-90HP 3-Cylinder Service Kit | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket major service kit for selected Mercury and Mariner 75HP, 80HP and 90HP inline three-cylinder carburetted two-stroke outboards using the later large-gearcase 47-43026Q06 / 8M0100526 water-pump system. This is the conventional carburetted two-stroke family and must not be confused with EFI four-stroke, OptiMax/DFI or four-cylinder models carrying the same horsepower ratings.

The applicable pump family is catalogued for selected 75-90HP two-strokes from approximately serial 0A996142 and later. Exact model-year coverage varies by horsepower, market and serial prefix, so the engine serial plate remains the controlling identifier.

⚙️ Key Features

• Major service package for 75HP, 80HP and 90HP inline-three carburetted two-strokes

• Includes a complete large-gearcase water-pump repair kit

• Includes thermostat, gasket, fuel filter and three surface-gap spark plugs

• Cross-referenced across Mercury, Sierra, GLM, Mallory, NGK, Denso and Autolite numbers

• Explicitly excludes OptiMax and four-stroke engine families

📋 Kit Contents

• 1 × Complete water-pump repair kit - Mercury/Quicksilver 47-43026Q06; current replacement 8M0100526

• 1 × 120°F / approximately 49°C thermostat - Mercury 14586-series

• 1 × Thermostat gasket - Mercury 27-43006-8

• 1 × Inline fuel filter - Mercury 35-877565T / 35-877565T1

• 3 × Champion L78V surface-gap spark plugs

Water-pump kit component breakdown:

• 2 × O-rings - Mercury 25-21836

• 1 × Quad ring - Mercury 26-45577-1

• 1 × Faceplate gasket - Mercury 27-8M0050720 / earlier 27-43033-1

• 1 × Impeller - Mercury 47-8M0025709 / 47-43026Q02

• 1 × O-ring - Mercury 25-90196

• 1 × Drive key - Mercury 28-8M0032833 / earlier 28-43037

• 1 × Face seal - Mercury 26-8M2014338 / earlier 26-816575A2

• 1 × Stainless faceplate - Mercury 8172761

• 1 × Water-pump gasket - Mercury 27-8172771

• 1 × Face-seal setting tool - Mercury 818769

• Remaining minor seals/washers supplied under the current catalogued 15-piece repair-kit revision

🔄 Supersession & Cross Reference

OEM Supersession / Related References:

• Mercury 8M0100526 → Supersedes 47-43026Q06

• Related pump-kit references: 47-43026Q5, 47-43026T6, T7, T8, T10 and T11

• Mercury 14586A-series - Thermostat family

• Mercury 35-877565T / T1 - Fuel-filter family

• Mercury 33-97182-series - Surface-gap spark-plug family

Verified Aftermarket / Other-Brand Equivalents:

• Sierra 18-3265 - Complete water-pump repair kit equivalent

• GLM 12043 - Complete water-pump repair kit equivalent

• Mallory 9-48313 - Complete water-pump repair kit equivalent

• Sierra 18-3549 - 120°F thermostat equivalent

• NGK BUHW-2 - Spark-plug equivalent to Champion L78V where specified

• Denso SF-51 - Surface-gap spark-plug equivalent

• Autolite 2872 - Surface-gap spark-plug equivalent

🚤 Compatibility

Commonly used on selected:

• Mercury 75HP inline three-cylinder carburetted two-stroke outboards

• Mercury 80HP inline three-cylinder carburetted two-stroke outboards

• Mercury 90HP inline three-cylinder carburetted two-stroke outboards

• Corresponding Mariner Mercury-built models

Engine Family:

• Approximately 1.4-litre inline-three carburetted two-stroke platform

• Large standard gearcase using 47-43026Q06 / 8M0100526 pump components

• Applicable pump family generally from approximately serial 0A996142 and later

• Production coverage is commonly associated with late-1980s through later carburetted-model years, but the full serial number must control selection

Important Exclusions:

• Not for OptiMax/DFI engines

• Not for EFI four-stroke 75-100HP 1.7-litre engines

• Not for later 2.1-litre four-strokes

• Not for V4, inline-four or inline-six engines from other Mercury production eras

• Earlier serials using a different pump family require a different service kit

🔌 Function

Renews the principal ignition, fuel, temperature-control and complete water-pump components used in a major scheduled service. The surface-gap plugs suit the ignition system used on the applicable carburetted family, while the complete pump kit renews the impeller, sealing surfaces, key and faceplate.

Common signs service is due include:

• Hard starting, misfire or loss of high-load performance

• Fuel restriction or contaminated filter media

• Incorrect operating temperature or thermostat sticking

• Weak tell-tale flow, impeller damage or scored pump plate

• Cooling-system leakage around pump seals and gaskets

📦 Condition

• Brand-new aftermarket service kit

• New, unused service components

• Current superseding part numbers may be supplied

• Confirm horsepower, full serial number, carburetted three-cylinder powerhead and pump family before installation