MERCURY 8M0174561 Thermostat Select Verado 140 135-400HP

( Manufacturer Part Number: 8M0174561 ), ( Replacement For Sierra: 18-3631 ), ( Type: Thermostat Housing ), ( Warranty: 1 Year ), ( Replacement For Mercury: 892864t04 ), ( California Prop 65 Warning: This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm. )

Review MERCURY Oem Thermostat Assembly 140 Select 135-400hp Verado

Mercury 8M0174561 Thermostat 140 - Optimized Heat Management Solution for Verado Outboards (135-400 HP)

The Mercury 8M0174561 Thermostat 140 is a precision-engineered component designed to enhance the performance and durability of your Verado outboard motor, specifically for models with a power output ranging from 135 to 400 horsepower. This thermostat, a vital element in your engine's cooling system, ensures optimal engine temperature regulation for smooth, reliable operation.

The Mercury 8M0174561 Thermostat 140 is engineered with a 140-degree Fahrenheit temperature rating, providing a balance between quick engine warm-up and efficient heat dissipation. Its robust construction, featuring high-quality materials, ensures resistance to corrosion and wear, even in the most challenging marine environments.

This thermostat is designed with a precise, mechanical valve that opens and closes in response to changes in coolant temperature. When the engine is cold, the valve remains closed, preventing coolant from circulating and allowing the engine to warm up quickly. Once the engine reaches the optimal operating temperature, the valve opens, allowing coolant to circulate and dissipate heat.

Installation of the Mercury 8M0174561 Thermostat 140 is straightforward and can be done as a DIY project or by a professional technician. The thermostat is compatible with Verado outboard models and comes with all necessary mounting hardware for a hassle-free installation.

By investing in the Mercury 8M0174561 Thermostat 140, boat owners and operators can enjoy enhanced engine performance, improved fuel efficiency, and extended engine lifespan. This thermostat is a smart investment for anyone seeking a reliable, high-quality component to ensure the optimal operation of their Verado outboard motor.

1. Compatibility: This thermostat is specifically designed for Mercury Verado engines within the specified horsepower range, ensuring a perfect fit and reliable performance.

2. Temperature Control: The thermostat plays a crucial role in regulating the engine's cooling system, preventing overheating and maintaining optimal engine temperature during operation.

3. Quality: Mercury is a reputable brand known for its marine parts, so you can expect this thermostat to be durable and perform well.

1. Price: Mercury products often come with a premium price tag, and this thermostat may be more expensive compared to some aftermarket alternatives.

2. Availability: Depending on your location, it might be challenging to find stores that carry this specific part, which could lead to longer waiting times for replacement.

In conclusion, if you own a Mercury Verado engine and are looking for a reliable thermostat replacement, the Mercury 8M0174561 Thermostat 140 could be an excellent choice due to its compatibility and quality. However, if budget is a concern, you might want to consider aftermarket alternatives. Always ensure to purchase from a trusted source to guarantee the quality of the part.

Recommendation: If budget allows, we recommend the Mercury 8M0174561 Thermostat 140 for its compatibility and brand reputation. If budget is a concern, research other reliable aftermarket options for comparison.

Details:

The thermostat housing is made of corrosion resistant, high temperature, molded, composite material to deliver increased service life. 1B390143 to 2B144127, prior Gen V, 200-300hp 6-cylinder engines Serial No. Includes the thermostat. 1B311420 and above, 200-300hp 6-cylinder engines Serial No.

Replacement thermostat housing 892864T04 is for Mercury Verado outboards 135-200hp 4-cylinder engines Serial No. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is performance, protection, peace mind. Corrosion resistant, high temperature, molded, composite material delivers increased service life. 2B144123 and above, Gen V 350-400hp 6-cylinder engines.

Always replace all housing seals, gaskets and clamps to ensure proper cooling system function.

part #: 8m0174561 prices

• $38.99-$159.95

specifications ouboaen:

• for makes: Mercury
• mpn: 8m0174561
• replacement for sierra: 18-3631
• type: Thermostat Housing
• warranty: 1 Year
• replacement for mercury: 892864t04
• california prop 65 warning: This Product May Contain Chemicals Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm.

seller ouboaen:

• # reviews: 10
• rating: 100.0%
• city: Clearwater, Florida

general ouboaen:

• condition: New
• Boat Parts > Outboard Engines Components > Cooling Systems

payments ouboaen:

• wallet: Paypal
• other
• credit card: Discover

shipping ouboaen:

• carrier: UPS, USPS
• transit: 4-9 Days
• service: UPS Ground, USPS Priority Mail
• class: Standard, Expedited
• cost: $9.77
• type: Calculated

returns ouboaen:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

offer ouboaen:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 4
• started: October 16, 2025

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