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Sierra Marine
Sierra Short Block Gasket Set - Mercruiser - S18-1268
Sierra Short Block Gasket Set - Mercruiser - S18-1268. Port Dip Stick Models ONLY Left Hand (Standard Rotation) Contains: Sierra CodeDescription S18-1237 Oil Pan Gasket S18-0905 Oil Drain Screw Gasket S18-0185 Oil Filter...
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Sierra Marine
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4347-1
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4347-1. For: GM 175, 185, 205 (229 & 262 CID) Contains: Sierra CodeDescriptionO.E #Qty S18-0897 Exhaust Elbow Mounting Gasket 27-41813-1 2 S18-2909 Exhaust Manifold to Cyl. Head...
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Sierra Marine
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4348
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4348 For: GM 454, 525 (7.4L & 8.2L) Contains: Sierra CodeDescriptionO.E #Qty S18-0418 Manifold to Cylinder Head Gasket 27-46820 2 S18-0897 Exhaust Elbow Mounting...
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Sierra Marine
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4349
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4349 For: GM 200, 228, 230, 260, 898 (5.0 & 5.7L) Contains: Sierra CodeDescriptionO.E #Qty S18-2949 Exhaust Manifold Gasket 27-33395 2 S18-0897 Exhaust Elbow Mounting...
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Sierra Marine
Sierra Intake Manifold Gasket Set - Mercruiser - S18-4408
Sierra Intake Manifold Gasket Set - Mercruiser - S18-4408. Replaces: 27-11977, 27-11987 For: GM 262 CID Engines 175, 185 and 205 HP Part Number SRA-S18-4408
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Sierra Marine
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4396
Sierra Exhaust Manifold Gasket Set - Mercruiser - S18-4396. Replaces: 27-46401A1 For: 250 (4.1L) CID Eng; 165 HP S/N 2770032 & UP Contains: Sierra CodeDescriptionO.E #Qty S18-2830-1 Intake Exhaust...
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Sierra Marine
Sierra Bell Housing Bushing Kit - Mercruiser - S18-2622
Sierra Bell Housing Bushing Kit - Mercruiser - S18-2622. Replaces: 23-79373A1, 23-805041A2, 27-45588, 27-79373 Part Number SRA-S18-2622
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Sierra Marine
Sierra Bell Housing Bushing Kit - Mercruiser - S18-3760
Sierra Bell Housing Bushing Kit - Mercruiser - S18-3760. Replaces: 23-806036A1 For: GEN II Serial # F680000 & UP Part Number SRA-S18-3760
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Sierra Marine
Sierra Engine Coupler - Mercruiser - S18-2171
Sierra Engine Coupler - Mercruiser - S18-2171. Replaces: 32492A2, 32492A3, 32492A5, 38965A1, 38965A2, 76850A2 For: All GM engines except MR/ALPHA/BRAVO with “Triangular”, 3-Bolt coupler Part Number SRA-S18-2171
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Sierra Marine
Sierra Engine Coupler - Mercruiser - S18-2173
Sierra Engine Coupler - Mercruiser - S18-2173. Replaces: 59826A1, 59826A3 For: Ford engines Part Number SRA-S18-2173
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Sierra Marine
Sierra Engine Coupler - Mercruiser - S18-2172
Sierra Engine Coupler - Mercruiser - S18-2172. Replaces: 14505A2 Used when replacing V6 or V8 2 piece rear main seal with 3-1/2” crankshaft bolt pattern to a newer 1 piece rear main seal engine with 3” bolt pattern Part...
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Sierra Marine
Sierra Engine Coupler - Mercruiser - S18-2413
Sierra Engine Coupler - Mercruiser - S18-2413. Replaces: 69354A1, 69354A2 For: 470, 485 (224 cu. in.) S/N 4208730-6218036 (1976-1982) Part Number SRA-S18-2413
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Sierra Marine
Sierra Yoke Assembly - Mercruiser - S18-6401
Sierra Yoke Assembly - Mercruiser - S18-6401 Replaces: 12784A10, 12784A4 For: Bravo I, II, III (OB664190 - up) (1998-05) Part Number SRA-S18-6401
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Sierra Marine
Sierra Head Gasket - Mercruiser - S18-2946
Sierra Head Gasket - Mercruiser - S18-2946. Replaces: 3853336, 908611 Fits: GM 181 (3.0L) CID Eng. Part Number SRA-S18-2946
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Sierra Marine
Sierra Thermostat Kit - Mercruiser - S18-3647
Sierra Thermostat Kit - Mercruiser - S18-3647 Replaces: 807252Q5, 807252T8 Contains: Sierra CodeDescriptionO.E # S18-3649 Thermostat 807252-2 S18-2844 Thermostat Cover Gasket 27-48818-1 S18-2552 Thermostat Cover...
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Sierra Marine
Sierra Thermostat Housing - Mercruiser - S18-1977-1
Sierra Thermostat Housing - Mercruiser - S18-1977-1. Replaces: 47441, 47441A1 Fits: 225, GM 260, 228, 898/198, 185R, 898R, 228R, 2GR Part Number SRA-S18-1977-1
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Sierra Marine
Sierra Thermostat Kit - Mercruiser - S18-3652
Sierra Thermostat Kit - Mercruiser - S18-3652. Contains: Sierra CodeDescriptionO.E # S18-2555 Thermostat Cover Gasket 27-89656-1 S18-2843 Thermostat Cover Gasket 27-74830 S18-3552 Thermostat 76270 Part...
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Sierra Marine
Sierra Thermostat Kit - Mercruiser - S18-3668
Sierra Thermostat Kit - Mercruiser - S18-3668. Replaces: 807252T4, 807252Q4 Contains: Sierra CodeDescriptionO.E # S18-2552 Thermostat Cover Gasket 27-33179-2 S18-2553 Thermostat Cover Gasket 27-47510 S18-2554 Thermostat Cover...
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Sierra Marine
Sierra Thermostat Kit - Mercruiser - S18-3667
Sierra Thermostat Kit - Mercruiser - S18-3667. Contains: Sierra CodeDescriptionO.E # S18-2555 Thermostat Cover Gasket 27-89656-1 S18-3555 Thermostat 99155A1 Part Number SRA-S18-3667
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Sierra Marine
Sierra Thermostat Kit - Mercruiser - S18-3648
Sierra Thermostat Kit - Mercruiser - S18-3648. 160° Part Number SRA-S18-3648
Motors & Parts - Inboard & Outboard
Inboard and outboard motors are the two main types of boat motors.
Inboard motors are located inside the hull of the boat. They are typically more powerful than outboard motors, and they can provide a smoother ride. However, they are also more expensive and more difficult to maintain.
The main parts of an inboard motor are:
- The engine: This is the heart of the motor, and it is responsible for generating power.
- The transmission: This transfers power from the engine to the propeller.
- The propeller: This is what actually moves the boat through the water.
Outboard motors are located outside of the hull of the boat. They are typically less powerful than inboard motors, but they are also less expensive and easier to maintain.
The main parts of an outboard motor are:
- The powerhead: This is the engine and transmission of the motor.
- The midsection: This houses the controls and the fuel tank.
- The lower unit: This contains the propeller and the gearcase.
In addition to the main parts, there are a number of other parts that are used in both inboard and outboard motors. These include:
- The fuel system: This delivers fuel to the engine.
- The cooling system: This keeps the engine cool.
- The electrical system: This provides power to the engine and the other components of the boat.
The parts of a boat motor can be quite complex, but they are all essential for the operation of the boat. By understanding the different parts of a boat motor, you can better understand how your boat works and how to maintain it properly.
Here are some of the most common parts of an inboard or outboard motor:
- Engine: The engine is the heart of the motor, and it is responsible for generating power.
- Propeller: The propeller is what actually moves the boat through the water.
- Gearbox: The gearbox transfers power from the engine to the propeller.
- Fuel system: The fuel system delivers fuel to the engine.
- Cooling system: The cooling system keeps the engine cool.
- Electrical system: The electrical system provides power to the engine and the other components of the boat.
These are just some of the most common parts of an inboard or outboard motor. There are many other parts that can be found in these motors, depending on the make and model of the motor.