Aftermarket Mercury 30HP 3-Cylinder All Models With Gearbox Ratio 2:1 Service Kit | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury 30 HP Three-Cylinder 2.00:1 Gearcase Service Kit - Kit Reference: Application-matched small-gearcase kit

Comprehensive aftermarket routine-maintenance kit assembled for 30 HP Mercury/Yamaha-platform three-cylinder carburetted four-stroke outboard applications. It combines the ignition, cooling, filtration and drain-sealing components listed below so the main scheduled-service items can be renewed together.

⚙️ Key Features

Kit contents:

• 1 × Thermostat - Part Number: 825212T02

• 1 × Thermostat gasket - Part Number: 27-8M0177107 (earlier 27-824853)

• 1 × Engine oil filter - Part Number: 35-822626Q2

• 1 × Engine oil drain-plug gasket - Part Number: 828816

• 3 × NGK spark plug - Part Number: DPR6EA-9

• 1 × Fuel filter - Part Number: 35-877565T1

• 2 × Gearcase drain-plug seal - Part Number: 12-191833

• 1 × Small-gearcase water-pump kit - Part Number: 821354A04

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Mercury/Quicksilver hyphenated and compact-number formats identify the same listed component

OEM / Related Numbers:

• 825212T02

• 27-8M0177107

• 35-822626Q2

• 828816

• DPR6EA-9

• 35-877565T1

• 12-191833

• 821354A04

Aftermarket / Verified Equivalents:

• Recmar, Sierra and Outboard Spares component-level replacements are available where the listed OEM reference is cross-matched

🚤 Compatibility

Commonly used on:

• Mercury 30 HP three-cylinder FourStroke models using the 2.00:1 small/thin-impeller gearcase

Typically suits:

• HP Range: 30 HP

• Engine Type: Mercury/Yamaha-platform three-cylinder carburetted four-stroke outboard

• Year / Serial Range: All model groups only where the gear ratio is 2.00:1 and water-pump kit 821354A04 is specified

• Identification: Confirm the complete engine model and serial number before ordering, particularly where shaft length, gear ratio or gearcase family changes the water-pump components.

🔌 Function

Provides the principal routine-service components used to maintain correct ignition, fuel delivery, cooling-water flow and fluid sealing. Renewing these items at the proper service interval helps support reliable starting, stable running, normal operating temperature and protection against contaminated oil or water-pump failure.

Common signs service is required:

• Hard starting, misfire, poor idle or reduced throttle response

• Restricted fuel flow, dirty filters or fuel starvation under load

• Weak or intermittent tell-tale flow, rising temperature or an overheat warning

• Cracked, hardened or missing impeller vanes

• Oil or gear-lubricant leakage from deteriorated drain-plug seals

• Scheduled annual, 100-hour or storage-return maintenance interval reached

📦 Condition

• Brand-new aftermarket service kit

• Supplied as new replacement components

• Supplied in suitable retail or equivalent packaging