Aftermarket Mercury 9.9HP (323cc) (0G760300-1B226999) (0P075166-0P400999) BigFoot Service Kit | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury 9.9HP FourStroke 323cc BigFoot Service Kit - Kit Reference: Application package for 0G760300-1B226999 and 0P075166-0P400999

A complete service package for Yamaha-built 323cc Mercury 9.9HP BigFoot four-stroke engines. The BigFoot 2.42:1 gearcase requires water-pump kit 46-99157T2 and must not be serviced with the standard-gearcase 46-42089A5 kit.

⚙️ Key Features

• Application-specific major service package

• Exact serial-range separation prevents mixing incompatible fuel filters, thermostats or gearcase pump parts

• Includes engine and gearcase drain-plug sealing components where applicable

• Includes the correct spark-plug type and quantity for the listed engine family

• Water-pump components match the stated standard, BigFoot or Command Thrust gearcase

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 46-99157T2 → BigFoot 2.42:1 gearcase water-pump kit

OEM / Related Numbers:

• 825212T02

• 27-8M0177107

• 35-822626Q2

• NGK DPR6EA-9

• 828816

• 816296Q03

• 12-191833

• 46-99157T2

Aftermarket / Verified Equivalents:

• Sawley's Select application-specific aftermarket service package

Included Components:

• 1 × Thermostat - 825212T02

• 1 × Thermostat gasket - 27-8M0177107 / 27-824853

• 1 × Oil filter - 35-822626Q2

• 2 × NGK DPR6EA-9 spark plugs

• 1 × Engine-oil drain gasket - 828816

• 1 × Fuel filter - 816296Q03

• 2 × Gear-oil screw seals - 12-191833

• 1 × BigFoot water-pump kit - 46-99157T2

Important Fitment Notes:

• BigFoot/2.42:1 gearcase only. Standard gearcase uses water-pump kit 46-42089A5.

🚤 Compatibility

Commonly used on:

• Mercury 9.9HP FourStroke 323cc BigFoot outboard service applications

Typically suits:

• Engine models:

• Mercury 9.9HP FourStroke 323cc BigFoot short-shaft variants

• Mercury 9.9HP FourStroke 323cc BigFoot long-shaft variants

• HP Range: 9.9HP

• Engine Type: 323cc carburetted inline-two four-stroke outboard with BigFoot gearcase

• Year Range: Serial-specific Yamaha-built production

• Serial Range: 0G760300-1B226999 and 0P075166-0P400999

🔌 Function

The service kit groups the routine ignition, lubrication, fuel-system, cooling-system and gearcase consumables required for a major scheduled service. Replacing the listed components helps maintain reliable starting, correct operating temperature, clean fuel delivery, adequate cooling-water flow and secure engine and gearcase sealing.

Common signs service is due:

• Hard starting, rough idle or misfire from worn or fouled spark plugs

• Restricted fuel delivery or unstable engine speed from a contaminated filter

• Engine temperature runs high because the thermostat or water pump is deteriorated

• Low oil pressure, dirty engine oil or a restricted oil filter on four-stroke engines

• Water or lubricant leakage from reused drain-plug seals

• Reduced cooling-water discharge or damaged impeller vanes

📦 Condition

• Brand new aftermarket service kit

• New and unused components

• Supplied in manufacturer or equivalent protective packaging