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 This thermostat is perfect for specific Yamaha outboard motors, maintaining the necessary temperature for efficient operation in models like VF200LA, VF225LA, and VF250LA (2011-2018). It features an original reference of 6CB-12411-10-00, operates at a temperature range of 60°C, and is manufactured by Sierra with the product number 18-3637.
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$ 104.83
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1-2 weeks delivery time Engineered for Yamaha outboard motors, this thermostat ensures optimal cooling and performance for models F115/LF115/VF115 from 2014 and later. It has an original reference of 6EK-12411-00, a temperature range of 60°C, and is branded by Sierra with the product number 18-3639.
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$ 70.60
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1-2 weeks delivery time This thermostat is designed for Mercury outboard engines, providing reliable temperature control for models such as 35 EFI, 40 EFI, 50 EFI, and 60 EFI (1C050252 and newer). It includes original references 8M0117413 and 8M0168892, is manufactured by Sierra, and has the product number 18-3640.
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$ 40.07
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1-2 weeks delivery time Specifically designed for select Yamaha outboard motors, this thermostat ensures effective temperature regulation for models like F75B, F90B, and VF90A, operating from 2016 to 2022. It features an original reference of 6FP-12411-00-00, a temperature range of 60°C, and is branded by Sierra with the product number 18-3641.
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$ 74.42
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1-2 weeks delivery time This thermostat kit is suitable for a wide range of Mercruiser engines, providing reliable temperature control with original references 807252Q3 and 807252T6. It is compatible with models including 5.0L, 7.4L, and 888, operating at a temperature range of 60°C, and is manufactured by Sierra with the product number 18-3646.
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$ 63.29
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1-2 weeks delivery time Designed for GM engine blocks used in Mercruiser applications, this thermostat kit ensures efficient thermal management with original references 807252Q5 and 807252T8. It is compatible with various models, including 3.0L, 4.3L, and 8.2L, and operates at a temperature range of 71°C, branded by Sierra with the product number 18-3647.
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$ 47.38
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1-2 weeks delivery time The Mercruiser thermostat is designed for optimal engine performance, ensuring efficient temperature regulation for models ranging from 3.0L to 8.2L and 200 to 502 CID, including the Black Scorpion variant. It operates at a temperature range of 71°C, is manufactured by Sierra, and has the product number 18-3648.
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$ 52.46
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1-2 weeks delivery time This high-quality thermostat optimizes the cooling system for Mercruiser engines, ensuring efficient operation and reliability for models with original references such as Crusader: 97895 and Mercruiser: 8052732. It is suitable for GM L4/V6/V8 engines (1987+) with a temperature range of 71°C, branded by Sierra with the product number 18-3649.
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$ 50.74
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1-2 weeks delivery time This high-quality thermostat kit is essential for maintaining optimal engine performance in Mercruiser engines. It features an original reference of 59078T3 and is compatible with models such as 215, 225, 230, and 888, operating at a temperature range of 60°C. Manufactured by Mercruiser and branded by Sierra, it has the product number 18-3650.
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$ 63.70
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1-2 weeks delivery time This reliable thermostat kit ensures that your Mercruiser engine runs smoothly and efficiently. It includes original references like 27-48818Q01 and is compatible with models such as 198, 215, and 575, with a temperature range of 61°C. It is manufactured by Mercruiser and branded by Sierra, carrying the product number 18-3651.
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$ 48.31
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1-2 weeks delivery time Specifically designed for various Mercruiser engine models, this thermostat kit provides optimal temperature control with original references such as 807252Q4. It is compatible with models ranging from 4.3L to 502, operating at a temperature range of 61°C, manufactured by Mercruiser and branded by Sierra, product number 18-3668.
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$ 74.93
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1-2 weeks delivery time This thermostat kit is tailored for Johnson and Evinrude outboard motors, ensuring reliable engine performance for models like E65 and J75. It includes original references like 313416 and operates at a temperature range of 62°C, manufactured by Evinrude and Johnson, branded by Sierra with the product number 18-3669.
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$ 69.02
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1-2 weeks delivery time Designed for Volvo-Penta engines and OMC applications, this thermostat kit ensures effective temperature management for models such as 2.5L and 140. It operates at a temperature range of 71°C, manufactured by OMC and Volvo Penta, and is branded by Sierra with the product number 18-3670.
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$ 64.47
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1-2 weeks delivery time This thermostat kit is designed for a range of Ford engines, ensuring optimal temperature regulation for models such as 302, 351, and CH350. It has an original reference of 97361 - RP026002E and operates at a temperature range of 61°C. Manufactured by Crusader and branded by Sierra, it carries the product number 18-3671.
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$ 58.47
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1-2 weeks delivery time This thermostat kit provides reliable performance for various Mercury engine models, ensuring efficient operation across models including 7.5 to 250. It features original references like 434841 and operates at a temperature range of 54.5°C. Manufactured by Mercury and branded by Sierra, it has the product number 18-3672.
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$ 50.64
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1-2 weeks delivery time Engineered for Johnson and Evinrude outboard motors, this thermostat kit provides precise temperature control for V4 Crossflow models such as 65 and 115. It has an original reference of 434841 and operates at a temperature range of 143°F. Manufactured by Evinrude and Johnson, it is branded by Sierra with the product number 18-3673.
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$ 99.07
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1-2 weeks delivery time This thermostat kit is specifically designed for V6 Crossflow engines, ensuring efficient temperature management for models like 150 and 235. It includes original references such as 508626 and operates at a temperature range of 62°C, manufactured by Evinrude and Johnson, branded by Sierra with the product number 18-3674.
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$ 78.74
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1-2 weeks delivery time Designed for a range of Volvo Penta engines, this thermostat kit ensures optimal performance with efficient temperature regulation. It features original references like 3856961 and operates at a temperature range of 71°C. Manufactured by Volvo Penta, it is branded by Sierra with the product number 18-3677.
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$ 52.62
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1-2 weeks delivery time This thermostat is designed for various Suzuki outboard engines, ensuring optimal performance and temperature regulation for models such as DF9.9 and DF70. It includes original references like 17670-94400 and operates at a temperature range of 60°C. Manufactured by Suzuki and branded by Sierra, it has the product number 18-3684.
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$ 79.91
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1-2 weeks delivery time Providing reliable temperature control, this thermostat enhances efficiency for various Suzuki outboard motors. It references original parts such as 17670-90J10 and operates at a temperature range of 71°C. Manufactured by Suzuki and branded by Sierra, it has the product number 18-3687.
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$ 79.17
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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.