
GS-OT-1-4-1 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $29.99 | Condition is New, Mercury Mercruiser --GS-OT-1/4-1---Oil Temperature Sending Unit, shipping cost = $10.95 | ![]() |

Introducing the Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit, an essential component for maintaining optimal engine performance in your Mercruiser or Mariner outboard motor. This sending unit is specifically designed to monitor and transmit oil temperature data to the engine's gauge or display.
The Mercruiser GS-OT-1/4-1 Oil Temperature Sending Unit is meticulously engineered with high-quality materials to ensure durability and reliability. It features a robust, heat-resistant housing that can withstand the harsh conditions of the marine environment. The sending unit's design allows for easy installation and integration with your existing engine wiring harness.
The Mercruiser GS-OT-1/4-1 Oil Temperature Sending Unit is a 1/4 NPT (National Pipe Tapered Thread) unit, making it compatible with a wide range of oil temperature sending unit applications. It utilizes a temperature sending bulb that is connected to the engine oil cooler, allowing the sending unit to accurately measure and transmit oil temperature data to the engine's gauge or display.
This sending unit is crucial for ensuring proper engine operation, as maintaining the correct oil temperature is essential for the longevity and efficiency of your Mercruiser or Mariner outboard motor. By monitoring oil temperature, you can prevent overheating and potential engine damage, ensuring a safe and enjoyable boating experience.
The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is a direct replacement for OEM (Original Equipment Manufacturer) units and is backed by Mercruiser's commitment to quality and performance. It is an excellent choice for boat owners seeking to upgrade or replace their existing oil temperature sending unit, ensuring they have the most accurate and reliable temperature readings for their engine.
In summary, the Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is a high-performance, durable, and accurate component designed to monitor and transmit oil temperature data to your engine's gauge or display. Its robust design, easy installation, and compatibility with various applications make it an excellent choice for maintaining optimal engine performance and ensuring a safe and enjoyable boating experience.
The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is an essential part of the engine monitoring system in Mercury outboard engines. This sending unit measures the oil temperature and sends the information to the engine gauge for display. In this response, I will discuss the pros and cons of buying this Mercury oil temperature sending unit.
Pros:1. Accurate Temperature Reading: The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit provides an accurate temperature reading of the engine oil. This information is crucial for maintaining the engine's optimal performance and avoiding potential damage due to overheating.
2. Easy Installation: Installing the sending unit is relatively straightforward, and it can typically be done in less than an hour. Mercury provides clear instructions and diagrams in the user manual to make the process as simple as possible.
3. Durable Construction: The sending unit is made of high-quality materials and is designed to withstand the harsh marine environment. It has a sealed design that protects it from water intrusion, and the temperature sensor is encapsulated in a protective material.
4. Wide Temperature Range: The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit can measure temperatures ranging from -40 F to 257 F (-40 C to 125 C). This wide temperature range ensures that it can be used in a variety of conditions and climates.
5. Improved Engine Monitoring: By providing an accurate oil temperature reading, the sending unit enables boat owners to monitor the engine's performance more effectively. This information can help identify potential issues before they become serious and expensive to repair.
Cons:1. Cost: The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is not the cheapest option on the market. While the cost may seem high, it is important to consider the long-term benefits of accurate engine monitoring and potential cost savings from avoiding engine damage.
2. Limited Compatibility: The sending unit is specifically designed for Mercury outboard engines, and it may not be compatible with other engine brands or models. Before purchasing, it is essential to ensure that the unit is suitable for your particular engine.
3. Requires Regular Maintenance: The sending unit requires regular maintenance, including periodic checks for water intrusion and oil contamination. Failure to maintain the unit could result in inaccurate temperature readings and potential engine damage.
Conclusion:The Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is an essential component for effective engine monitoring in Mercury outboard engines. Its accurate temperature readings, easy installation, durable construction, wide temperature range, and improved engine monitoring capabilities make it a worthwhile investment for boat owners. While the cost may be a consideration, the potential cost savings from avoiding engine damage and the long-term benefits of accurate engine monitoring make it a sound investment.
Recommendation:If you own a Mercury outboard engine and are looking for an accurate and reliable oil temperature sensor, the Mercruiser GS-OT-1/4-1 Mercury Oil Temperature Sending Unit is an excellent choice. It provides essential information for maintaining optimal engine performance and avoiding potential damage due to overheating. While it may require regular maintenance and have a higher cost compared to some other options, the long-term benefits make it a worthwhile investment.
Details:
Mercury Mercruiser GS-OT-1/4-1 -oil temperature sending unit, new item with no factory packaging. Some exceptions may apply.
specifications inboardfuel:
- for makes: Mercury
- brand: Mercruiser
- mpn: Gs-ot-1/4-1
- part type: Oil Sending Unit
- fit for: Mercruiser Volvo
shipping inboardfuel:
- service: usps ground advantage, fedex ground or fedex home delivery
- transit: 4-9 days
- carrier: usps, fedex
- class: standard
- type: calculated
returns inboardfuel:
- time: 30 days
- paid by: buyer
- policy: returns accepted
seller inboardfuel:
- city: eldon, missouri
- rating: 99.6%
- # reviews: 7798
offer inboardfuel:
- in stock #: 1
- availability: in stock
- options: ship-to-home
- sold #: 23
- started: may 8, 2025
- best offers: true
- price: $29.99
- item condition: New
general inboardfuel:
- category: Boat Parts > Inboard Engines Components > Intake Fuel Systems
payments inboardfuel:
- credit card: diners-club
- other
- wallet: apple-pay
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