Aftermarket Mercury 50HP, 60HP EFI 4-Stroke Service Kit (1C000001-1C050252 & Up) | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket major service kit for selected Mercury 50HP and 60HP EFI four-stroke outboards with the four-cylinder powerhead, standard 1.83:1 gearcase and serial number 1C000001 and higher. The package combines the engine-oil, dual-fuel-filter, spark-plug, thermostat, drain-seal and water-pump consumables required for a comprehensive scheduled service.

This service configuration applies to the four-cylinder EFI family. It must not be confused with the nearby three-cylinder 40/50/60HP EFI models, BigFoot/Command Thrust gearcases or the 1.7L 75-115HP Yamaha-derived platform.

⚙️ Key Features

• Major service package for 50HP and 60HP four-cylinder EFI four-stroke outboards

• Covers both low-pressure and engine-mounted fuel filtration

• Includes engine oil-filter and oil-drain sealing components

• Includes spark plugs, thermostat and water-pump service items

• Configured for the standard 1.83:1 gearcase

• Cross-referenced to current Mercury service and replacement numbers

📋 Kit Contents

• 1 × Primary/low-pressure fuel filter - Mercury 881540, approximately 1.75-inch filter body

• 1 × Secondary fuel filter - Mercury 35-879885T; related 35-879885K / 35-879885Q references

• 1 × Engine oil filter - Mercury/Quicksilver 35-822626Q2; related Q03, Q04 and Q05 revisions; current service replacement 35-8M0162829

• 1 × Water-pump impeller - Mercury 47-19453T

• 1 × Upper water-pump gasket - Mercury 27-822189

• 1 × Lower water-pump gasket/seal - Mercury 27-8M4502052, replacing earlier 27-19701 applications

• 1 × 60°C thermostat - Mercury 8M0117413; current replacement 8M0168892

• 1 × Thermostat gasket - Mercury 27-8M0177107; related earlier reference 27-824853

• 4 × Champion RA8HC spark plugs

• 3 × Oil/gearcase drain seals - Mercury 26-830749

• 1 × Engine-oil drain gasket - Mercury 828816

Related complete water-pump repair kit when more than the impeller and gaskets require renewal:

• Mercury/Quicksilver 47-19453Q2 / 19453Q02

• Impeller 47-19453T

• Drive key 28-8M0032831

• Wear plate 19700A2

• Upper gasket 27-822189

• Lower gasket/seal 27-19701 / 8M4502052

• Water-tube seal/coupler 859770 / 8597701 / 893857 or later 8M0204658 according to kit revision

🔄 Supersession & Cross Reference

OEM / Related References:

• Mercury 8M0232733 - Genuine 100-hour maintenance kit reference for selected 40-60HP four-stroke engines from serial 1C000001 and up; contents differ from this expanded aftermarket package

• Mercury 35-822626Q2 / Q03 / Q04 / Q05 → 35-8M0162829 - Oil-filter succession

• Mercury 8M0117413 → 8M0168892 - Thermostat succession

• Mercury 27-824853 → 27-8M0177107 - Thermostat-gasket reference progression

• Mercury 35-879885K / Q / T - Secondary fuel-filter family

• Yamaha 68V-24563-00 - Cross-reference used for the corresponding secondary fuel-filter element on the shared component family

Verified Aftermarket / Other-Brand Equivalents:

• Sierra 18-3213 - Complete 47-19453Q2-style water-pump kit equivalent

• GLM 12224 - Complete water-pump kit equivalent

• WSM 725-230 - Complete water-pump kit equivalent

• SEI 96-265-03AK - Complete water-pump kit equivalent

• HJ-MHJB-19453Q02 - Complete water-pump kit equivalent

• Aftermarket oil filters cross-referenced to Mercury 35-8M0162829 are available from recognised marine-filter manufacturers; thread, bypass and anti-drainback specifications must match the Mercury application

🚤 Compatibility

Commonly used on selected:

• Mercury 50HP EFI four-stroke, four-cylinder outboards

• Mercury 60HP EFI four-stroke, four-cylinder outboards

• Corresponding Mariner versions where the serialised Mercury component catalogue specifies the same service parts

Serial / Configuration:

• 1C000001 & Up

• Four-cylinder EFI four-stroke powerhead

• Standard 1.83:1 gearcase

Important Exclusions:

• Not for three-cylinder 40/50/60HP EFI models

• Not for BigFoot, Command Thrust or 2.31:1 large-gearcase variants

• Not for carburetted four-strokes outside the stated serial family

• Not for 75-115HP 1.7L or 2.1L EFI platforms

• Serial range is 1C000001 and later for the applicable four-cylinder standard-gearcase family; verify the complete serial number because nearby three-cylinder models use different service components

🔌 Function

Provides the primary consumables required to restore scheduled-service condition across the engine lubrication, fuel, ignition, cooling and gearcase-sealing systems. Using both fuel filters and the correct oil filter is important on EFI engines because contamination or restricted flow can affect pressure stability and injector performance.

Common signs service is due include:

• Extended cranking, uneven idle or restricted fuel supply

• Contaminated engine oil or overdue oil-filter replacement

• Worn or fouled spark plugs

• Engine temperature outside normal range

• Weak cooling-water discharge or damaged pump impeller

• Oil or gear-lube seepage at drain plugs caused by reused seals

📦 Condition

• Brand-new aftermarket service kit

• Supplied with new, unused components

• Component brands may vary according to availability while retaining the listed OEM cross-references

• Confirm the full serial number, four-cylinder powerhead and standard 1.83:1 gearbox before installation