MERCURY 861188A1 Thermostat Housing

( Part Type: Thermostat Housing ), ( Manufacturer Part Number: 861188A1 ), ( Country Of Origin: United States )

Review MERCURY Oem Thermostat Housing fits MERCRUISER

The Mercury 861188A1 Mercruiser Thermostat Housing is an essential component of marine engine cooling systems. This housing is meticulously designed to house the thermostat, which plays a crucial role in regulating the engine's temperature.

This Mercury part is made from high-quality materials, ensuring durability and resistance to the harsh marine environment. The housing is designed to fit specifically with Mercruiser engines, ensuring a secure and snug fit. It is engineered to meet OEM specifications for optimal performance and reliability.

The Mercury 861188A1 Thermostat Housing features a unique design that allows for easy thermostat replacement. The housing is equipped with a gasket that ensures a tight seal, preventing coolant leaks and maintaining the cooling system's efficiency. The gasket is made from a high-temperature material that can withstand the extreme temperatures encountered in marine engine cooling systems.

The housing is also designed to be easy to install. It comes with clear installation instructions, making it a straightforward process for DIY boat owners or marine technicians. The housing is supplied with all necessary mounting hardware, ensuring a hassle-free installation experience.

In the event of a coolant leak, the Mercury 861188A1 Thermostat Housing is designed with safety in mind. The housing is equipped with a pressure relief valve that releases excess coolant pressure, preventing potential engine damage.

The Mercury 861188A1 Mercruiser Thermostat Housing is the ideal choice for boat owners seeking a reliable and effective solution for their marine engine cooling system. Its high-quality construction, easy installation, and efficient design make it a must-have component for any marine engine.

The Mercury 861188A1 Mercruiser thermostat housing is a crucial component for maintaining optimal engine temperature in Mercury outboard motors. Here are some pros and cons to help you decide if purchasing this part is the right choice for you.

1. Ensures Proper Engine Temperature: A faulty or worn-out thermostat housing can cause engine overheating or poor cooling, which can lead to costly repairs and even engine damage. Replacing the housing with a new one ensures your engine operates at the correct temperature.

2. Improved Engine Performance: A well-functioning thermostat housing can help improve engine performance by maintaining the ideal engine temperature, which leads to better fuel efficiency and longer engine life.

3. OEM (Original Equipment Manufacturer) Part: Using an OEM part guarantees that it is specifically designed for your Mercury outboard motor and meets the manufacturer's standards for quality and durability.

1. Cost: The Mercury 861188A1 Mercruiser thermostat housing is an investment, and the cost might be a deterrent for some boat owners. However, considering the potential consequences of neglecting the thermostat housing, the cost may be worth the peace of mind and potential savings in the long run.

2. Installation Complexity: Installing the thermostat housing yourself may require some technical knowledge and experience, which could add to the overall cost if you choose to hire a professional.

3. Availability: Depending on your location and the availability of the part from your local dealer or supplier, you might experience a delay in receiving the thermostat housing, which could put your boat out of commission for a longer period than desired.

The Mercury 861188A1 Mercruiser thermostat housing is an essential component for maintaining the proper engine temperature in Mercury outboard motors. While the cost and installation complexity might be a concern, the benefits of using an OEM part and ensuring optimal engine performance make it a worthwhile investment. If you're experiencing issues with your engine temperature or want to prevent potential problems, consider replacing the thermostat housing as soon as possible.

Details:

New take-off oem Mercruiser thermostat housing with temperature sender,coolant sensor, gasket # 861188A1.

part #: 861188a1 prices

• $108.00-$285.00

specifications vesselveep:

• for models: Mercruiser
• for makes: Mercury
• part type: Thermostat Housing
• manufacturer part number: 861188A1
• country of origin: United States

payments vesselveep:

• other
• wallet: Paypal
• credit card: Mastercard

general vesselveep:

• condition: New
• Parts Accessories > Boat Parts > Other

seller vesselveep:

• rating: 100.0%
• # reviews: 145
• city: Massapequa, New York

offer vesselveep:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1
• started: April 9, 2026

returns vesselveep:

• paid by: Seller
• policy: Returns Accepted
• time: 14 Days

shipping vesselveep:

• type: Calculated
• carrier: USPS
• transit: 4-9 Days
• service: USPS Ground Advantage
• cost: $0.00
• class: Standard

Mercury 861188A1 Is Similar To:

• Mercury 31640t 5 A47 Genuine Quicksilver Trim Tab Oem New Factory Boat Parts (42.9% similar) Part #: mercury 31640T 5 for sale...(June 3rd, 2024)
• Mercury 96570m A47 Genuine Quicksilver Ignition Coil Oem New Factory Boat Parts (41.9% similar) Part #: mercury 96570M for sale...(June 3rd, 2024)
• Mercury Marine mercruiser 822344t14 Marine mercruiser New Oem Trim Assy (43% similar) Brand new, genuine mercury marine/mercruiser trim assay. This is a factory original equipment item, not aftermarket...(June 3rd, 2024)
• Mercury 16-844142a01 Nos Oem Mercury16-844142a01 Stud With Insert K Plane 280s 380s (37.6% similar) 16-844142A01. Offers less than 1/2 price will not be entertained. As is pictured. Buyers to pay all shipping charges unless stated free shipping. K plane 280S 380S...(June 3rd, 2024)
• Mercury 822157t 2 Mercruiser Quicksilver Trim Tab Oem Part 822157 (49.6% similar) New old open stock. Mercury mercruiser quicksilver trim tab oem part # 822157T see all photos...(June 3rd, 2024)
• Mercury Marine 21-806603 Quicksilver Mariner Pvc Valve Oem Sterndrive (38.7% similar) Up for sale is a mercury marine / quicksilver mercruiser PVC valve part number 21-806603. This is a new oem part in the factory package...(June 4th, 2024)
• Mercury 84182m M14 Quicksilver Carburetor Repair Kit Oem New Factory Boat Parts (45% similar) Part #: mercury 84182M for sale...(June 4th, 2024)
• Mercury 802347 R39 Quicksilver Impeller Replaces Omc 434424 Oem New Boat Parts (40.6% similar) Part #: mercury 802347 for sale...(June 5th, 2024)
• Mercury Fa435260 R64 Quicksilver Piston Ring Set Oem New Factory Boat Parts (41.6% similar) Part #: mercury FA435260 for sale...(June 5th, 2024)
• Mercury 98-8m6002991 New Air Regulator Oem (43% similar) New- mercury 98-8M6002991, air regulator, oem: -new- manufacturer. Condition: new other see details. Rarely, an accident may happen outside of our control. Shipping info: free shipping applies to items being delivered within the contiguous USA lower 48. Whats included: -new...(June 5th, 2024)
• Mercury F366886 R67 Genuine Quicksilver Retaining Pin Oem New Factory Boat Parts (44.6% similar) Part #: mercury F366886 for sale...(June 5th, 2024)