Sierra Boat Parts represents a wide range of marine parts used in engines, fuel systems, electrical components, starters, solenoids, manifolds, gears, and drive parts for the marine industry. These products are designed to replace original components in outboard and inboard power systems, supporting high horsepower engine demands in harsh marine environments, including 4 stroke applications, fuel delivery, ventilation, and drivetrain operation.
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1-2 weeks delivery time Designed for GM engine blocks, this exhaust manifold gasket kit ensures a reliable seal and optimal performance, with original reference 27-99777A1, and is branded by Sierra with product number 18-4367.
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$ 63.45
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1-2 weeks delivery time This timing chain gasket set is compatible with various Mercruiser engine models, including 2.5L, 3.0L, and others, engineered for reliable sealing and performance, branded by Sierra with product number 18-4375.
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$ 35.37
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1-2 weeks delivery time This engine block gasket kit is suitable for GM 3.0L engines, excluding the 3.0LX model, providing essential sealing solutions to maintain engine integrity and performance, branded by Sierra with product number 18-4384.
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$ 302.60
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1-2 weeks delivery time This gasket kit is designed for GM engine blocks, specifically for 4.3L models, ensuring optimal performance and longevity, with original references 27-11977A88 and 27-11977A92, and is branded by Sierra with product number 18-4388.
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$ 711.86
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1-2 weeks delivery time The exhaust manifold gasket kit for Mercruiser engines ensures a perfect seal, enhancing performance and reliability, with original reference 27-46401A1 and designed for models 4.1L, 165, 250, branded by Sierra with product number 18-4396.
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$ 105.13
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1-2 weeks delivery time This alignment tool is essential for maintaining the integrity of your Mercruiser lower unit, ensuring proper alignment for optimal performance and longevity, with original references Merc. 91-57797A3 and Merc. 91-805475A1, branded by Sierra with product number 18-4442.
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$ 255.43
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1-2 weeks delivery time Designed for Mercruiser engines, this air exhaust valve provides efficient exhaust flow and durability, featuring an original reference of 34765A1 and a diameter of 3 inches, branded by Sierra with product number 18-4456.
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$ 62.33
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1-2 weeks delivery time This overhead exhaust outlet valve is crucial for efficient exhaust management in your boating system, molded from a single block and supplied with a stainless steel collar, featuring an inner diameter of 102 mm, and is branded by Sierra with product number 18-4457.
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$ 44.75
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1-2 weeks delivery time Designed for reliable exhaust flow, this overhead exhaust valve is made from molded rubber and attaches to the transom outlet, featuring an inner diameter ranging from 127 to 152 mm, and is branded by Sierra with product number 18-4458.
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$ 119.89
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1-2 weeks delivery time Essential for servicing Mariner and Mercury engines, this propeller removal wrench has original references Mercury Mariner 91-821887 A1 and Merc. 91-82887A1, and is branded by Sierra with product number 18-4459.
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$ 55.27
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1-2 weeks delivery time Designed for Johnson and Evinrude outboard engines, this impeller ensures optimal water flow for cooling and performance, with an original reference of 382221, made of rubber, and is branded by Sierra with product number 18-45221.
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$ 93.70
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1-2 weeks delivery time This impeller is suitable for various outboard engine models, offering reliable performance and durability, with original references 114812 and 47-95289, made of rubber, and is branded by Sierra with product number 18-45312.
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$ 56.63
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1-2 weeks delivery time This high-quality impeller is designed specifically for Tohatsu outboard engines, ensuring optimal performance and reliability, with original reference 353650210M, made of rubber, and branded by Sierra with product number 18-45404.
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$ 77.02
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1-2 weeks delivery time Tailored for Yamaha engines, this durable impeller provides excellent water flow and cooling efficiency, with original reference 6CE-44352-00-00, made of rubber, and branded by Sierra with product number 18-45617-1.
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$ 92.81
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1-2 weeks delivery time Engineered for Yanmar inboard engines, this impeller guarantees smooth operation and longevity, featuring original references 119574-42550, 119574-42552, and 09-821B, made of rubber with 12 blades, and is branded by Sierra with product number 18-45714.
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$ 144.12
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1-2 weeks delivery time This reliable lower unit drain gasket is suitable for Yamaha and Mercury engines, ensuring a secure seal and preventing leaks, with original references including 27-81987 and 604-45342-00-00, and is branded by Sierra with product number 18-4698.
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$ 3.70
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1-2 weeks delivery time Designed for both Yamaha and Mercury engines, this pack of 50 drain gaskets provides excellent sealing performance, with original references including 27-81917 and 90430-08003-00, and is branded by Sierra with product number 18-46981-9.
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$ 188.06
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1-2 weeks delivery time This comprehensive water pump kit is ideal for Mercury and Tohatsu outboard engines, ensuring efficient cooling, with original references 46-803750A03 and 3B2-87322-0, and is branded by Sierra with product number 18-48317.
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$ 350.40
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1-2 weeks delivery time Specifically designed for Yamaha outboard engines, this high-performance water pump kit ensures efficient cooling and reliable operation, with original references 67D-W0078-00-00, and is branded by Sierra with product number 18-48619.
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$ 120.40
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1-2 weeks delivery time This durable launcher handle and rope are essential for efficiently starting your outboard engine, branded by Sierra with product number 18-4904.
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$ 19.32
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What is the functional purpose of a thermostat part in a boat engine system used in Sierra Boat Parts applications?
The functional purpose of a thermostat part in a boat engine system is to regulate coolant flow so the engine maintains its optimal operating temperature under varying loads. In marine products such as aftermarket engine and drive parts, proper temperature control supports efficient marine fuel combustion, protects internal components, and ensures correct vent and cooling behavior during continuous operation. This type of replacement component is commonly referenced within technical ranges associated with sierra marine parts and sierra replacement applications in the marine environment.
How are marine fuel system components designed to operate with mercury engine platforms?
Marine fuel system components are designed to align with mercury engine platforms by matching specific fuel pressure, flow characteristics, and operating temperatures required by these power units. In mercruiser-style applications, such components support consistent engine performance and reliability.