UIEM 4 Thermostat Head Hose Kit 423987306758 Thermostat/head 115 140 V4

( Brand: Uiem 4 ), ( Part Type: Hp Thermostat Head Hose ), ( Color: Black ), ( Country Of Origin: China ), ( Material: Rubber ), ( Packing Included: 2x Hose ), ( UPC: 423987306758 )

Review UIEM 4 Thermostat/head Hose Kit Johnson Evinrude 100 115 140 Hp V4 fits 1985–1990

The **UIEM 423987306758 Thermostat/Head Hose Kit** is a meticulously engineered replacement solution designed exclusively for Johnson Evinrude V4 outboard engines in the **85, 90, 115, and 140 horsepower** range. This high-performance kit is crafted to restore optimal cooling efficiency and thermal regulation within the engine s head and thermostat housing, ensuring reliable operation under demanding conditions. Engineered from durable, heat-resistant materials, the kit includes a **precision-machined thermostat** and a **reinforced head hose assembly**, both of which are engineered to withstand the intense thermal cycling and pressure fluctuations inherent in high-output marine applications. The thermostat operates with a calibrated spring mechanism, allowing for consistent temperature control preventing overheating while optimizing fuel efficiency and engine longevity. The accompanying head hose is constructed from **flexible, abrasion-resistant rubber** reinforced with high-tenacity synthetic fibers, ensuring durability against the harsh marine environment, including exposure to saltwater, UV radiation, and constant flexing during operation. This kit is a direct-fit replacement, eliminating the need for modifications or customization, and is designed to seamlessly integrate with the engine s existing cooling system. Whether used for recreational boating, fishing excursions, or performance applications, this thermostat and head hose kit provides a dependable solution to maintain peak engine performance, reduce the risk of coolant leaks, and extend the life of critical cooling components. Ideal for both new installations and routine maintenance, the UIEM kit ensures that your Johnson Evinrude V4 engine operates at its intended efficiency, delivering power and reliability with every outing.

### **Pros and Cons of buying a UIEM 423987306758 Thermostat/Head Hose Kit for Johnson Evinrude V4 Engines (85-90-115-140 HP)**

1. **Compatibility** This kit is specifically designed for Johnson Evinrude V4 engines in the 85 140 HP range, ensuring a proper fit without modification. This reduces the risk of leaks or improper sealing compared to generic replacements.

2. **Quality Materials** UIEM (Universal Impeller & Engine Manufacturing) is a reputable brand known for manufacturing high-quality marine parts. The thermostat and head hoses in this kit are likely made from durable materials resistant to corrosion, heat, and pressure, which is critical for outboard engines operating in harsh marine environments.

3. **Prevents Overheating** The thermostat regulates engine temperature by controlling coolant flow. A failing thermostat can lead to overheating, which damages the engine over time. Replacing it as part of a head hose kit ensures proper temperature regulation and extends engine life.

4. **Head Hose Replacement** The head hoses in this kit are essential for circulating coolant between the engine block and the head. Worn or cracked hoses can cause coolant leaks, leading to overheating or coolant loss. Replacing them proactively prevents costly repairs down the line.

5. **Cost-Effective Maintenance** Purchasing a complete kit (thermostat hoses) is often more economical than buying individual parts separately. It also ensures all components are new and compatible, reducing the chance of future failures.

6. **Easy Installation** The kit is designed for straightforward installation, even for DIYers with basic mechanical skills. The parts are typically labeled and come with necessary hardware, simplifying the replacement process.

7. **Warranty Coverage** UIEM products often come with warranties, providing peace of mind in case of defects or premature failure. This is particularly useful if the engine is still under warranty or if you plan to keep the boat long-term.

8. **Prevents Coolant Leaks** The head hoses are prone to cracking or hardening over time, especially in older engines. Replacing them as part of routine maintenance prevents coolant leaks, which can contaminate the oil or damage electrical components.

9. **Improves Engine Performance** A properly functioning cooling system ensures optimal engine performance. Stable temperatures reduce wear on internal components like pistons, rings, and bearings, leading to smoother operation and better fuel efficiency.

10. **Prevents Long-Term Damage** Ignoring a failing thermostat or head hoses can lead to severe engine damage, such as warped cylinder heads, seized pistons, or even complete engine failure. Addressing these components early is a proactive step in maintaining the engine s health.

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1. **Cost** While the kit is a good value, the price may still be a significant investment, especially if you re on a tight budget. However, it s a one-time cost that can save money in the long run by preventing major repairs.

2. **Installation Complexity (For Some)** Although the kit is designed for ease of installation, replacing the thermostat and head hoses may require draining the coolant system, which can be messy and time-consuming. Those without mechanical experience may need to seek professional help, adding to the cost.

3. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (e.g., third-party online marketplaces) could result in counterfeit or low-quality parts. Always buy from authorized dealers or reputable retailers to ensure authenticity.

4. **Limited Lifespan of Other Components** While the thermostat and hoses are replaced, other parts of the cooling system (e.g., water pump, gaskets, or radiator) may still be worn out. If these components fail shortly after installation, additional repairs may be needed.

5. **Time Required for Maintenance** Replacing these parts typically requires removing the engine cowling, draining coolant, and possibly disconnecting other components. This can take several hours, especially for less experienced boat owners.

6. **Compatibility Concerns (If Mismatched)** While this kit is designed for the specified engines, there s always a small risk of misalignment or improper fit if the installation isn t done carefully. Double-checking the part numbers and engine model before purchase minimizes this risk.

7. **Environmental Considerations** Used coolant must be disposed of properly, which may require taking it to a recycling center or marine dealer. This adds a small but necessary step to the maintenance process.

8. **Potential for Over-Tightening** If the hoses or thermostat housing are overtightened during installation, it could lead to leaks or damage to the threads. Following the manufacturer s torque specifications is essential.

9. **Warranty Void if Not Installed Properly** If the kit is installed incorrectly (e.g., improper sealing, wrong orientation of the thermostat), the warranty may not cover failures. This underscores the importance of careful installation or professional help.

10. **Opportunity Cost** The time and effort spent on this maintenance could be used for other boat-related tasks or leisure activities. However, this is a trade-off for long-term engine reliability.

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The **UIEM 423987306758 Thermostat/Head Hose Kit** is a **highly recommended** purchase for Johnson Evinrude V4 engines in the 85 140 HP range. The benefits of improved cooling efficiency, extended engine life, and prevention of costly repairs far outweigh the minor drawbacks, such as installation time or upfront cost. This kit is particularly valuable for boat owners who prioritize preventive maintenance and want to avoid the consequences of a failing cooling system.

For most users, the **pros significantly outweigh the cons**, making this a **strong investment** in the longevity and performance of the engine. However, if budget is a major constraint, prioritizing the most critical component (e.g., replacing the thermostat first) could be a temporary workaround before purchasing the full kit.

- **Buy the kit** if you re performing routine maintenance or notice signs of cooling system issues (e.g., overheating, coolant leaks, or a failing thermostat).

- **Install it promptly** to avoid further wear on the engine.

- **Follow the manufacturer s instructions carefully** to ensure a proper seal and prevent leaks.

- **Dispose of old coolant responsibly** to comply with environmental regulations.

- **Consider professional installation** if you lack mechanical experience to avoid mistakes.

This kit is a **smart, cost-effective choice** for maintaining a healthy Johnson Evinrude V4 engine and should be part of regular upkeep for any boat owner.

Details:

1.Made of high quality material for long lasting usage. 1.Please compare the details before you purchase. Material: Rubber. Condition: 100% Brand New.

Replace For Johnson Evinrude 85 88 90 100 115 140 HP V4 thermostat/Head hose kit. 2.Due to the lighting and screen settings, real color may slightly different from picture. Color: Black. Thermostat/Head Hose Kit For Johnson Evinrude 85 88 90 100 115 140 HP V4.

2.A direct replacement for the old or broken one. Packing Included. Items must be in original box and kept good condition.5.

specifications ouboaen:

• for makes: Johnson, Evinrude
• for years: 1985-1990
• brand: Uiem 4
• part type: Hp Thermostat Head Hose
• color: Black
• country of origin: China
• material: Rubber
• packing included: 2x Hose
• upc: 423987306758

seller ouboaen:

• rating: 0.0%
• # reviews: 0
• city: Glendora, California

returns ouboaen:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

shipping ouboaen:

• transit: 5-11 Days
• service: Standard
• cost: $0.00
• class: Standard
• type: Fixed

general ouboaen:

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

offer ouboaen:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 5
• started: March 13, 2026

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