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  3. GATES SX-5977

GATES SX-5977 Engine Coolant Thermostat 4.9L L6

fits model: E-150. make: Ford. year: 1975–1996.

Sx-5977 Gates Engine Coolant Thermostat For 1975-1996 Ford E-150 Econoline 4.9l L6 Mh

( Brand: Gates ), ( Manufacturer Part Number: SX-5977 ), ( Type: Engine Coolant Thermostat ), ( Placement On Vehicle: Belts Cooling Thermostat Housing ), ( Manufacturer Warranty: Recommended Service Interval ), ( Item Height: 2.750 ), ( Ipn: C672 45-51 ), ( Compatible Model: E-150 Econoline ), ( Compatible Year: 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Engine Coolant Thermostat )

Review GATES Engine Coolant Thermostat For Ford Econoline 4.9l L6 Mh fits E-150 1975–1996

The Gates SX-5977 Engine Coolant Thermostat is designed specifically for Ford E-150 vans manufactured between 1975 and 1996, equipped with the 4.9L L6 MH engine. This thermostat plays a crucial role in maintaining the optimal engine temperature for reliable and efficient performance.

The Gates SX-5977 is an improved version of the original equipment thermostat. It features a durable, corrosion-resistant housing constructed from high-quality materials. The thermostat's housing is designed to withstand the harsh conditions of prolonged coolant exposure, ensuring a longer service life compared to the OE part.

The thermostat's functioning relies on a temperature-sensitive valve. Once the coolant temperature reaches the desired level, the valve opens, allowing coolant to flow from the engine to the radiator, facilitating heat dissipation. When the engine cools down, the valve closes, preventing coolant from circulating unnecessarily, and preserving engine heat.

The Gates SX-5977 Engine Coolant Thermostat is supplied with all necessary mounting hardware, making installation a straightforward process. The thermostat's precise specifications ensure a perfect fit for your Ford E-150, ensuring minimal modification is required during installation.

The Gates SX-5977 Engine Coolant Thermostat is engineered to deliver superior performance, reliability, and longevity. By regulating engine temperature effectively, it helps protect the engine from overheating and potential damage, ensuring your Ford E-150 continues to perform at its best. Whether you are commuting daily or embarking on a long road trip, the Gates SX-5977 Engine Coolant Thermostat is an essential component for maintaining the optimal engine temperature and keeping your van running smoothly.

Buying a Gates SX-5977 engine coolant thermostat for a 1975-1996 Ford E-150 with a 4.9L L6 MH engine can be a worthwhile investment for maintaining optimal engine performance and temperature. Here are some pros and cons to consider before making a purchase.

Pros:

1. Improved Engine Performance: A faulty engine coolant thermostat can cause uneven engine temperature, leading to a decrease in engine performance. Replacing the thermostat with a new one can help improve the engine's efficiency and power output.

2. Prevents Overheating: A malfunctioning thermostat can cause the engine to overheat, which can lead to costly repairs and damage to other engine components. A new thermostat can help prevent overheating and prolong the life of the engine.

3. Better Fuel Economy: A well-functioning engine coolant thermostat can help maintain the ideal engine temperature, which can lead to better fuel economy as the engine runs more efficiently.

4. Cost-Effective: Replacing a faulty engine coolant thermostat is a relatively inexpensive repair compared to other engine repairs.

5. Easy Installation: The Gates SX-5977 engine coolant thermostat is designed to fit most 1975-1996 Ford E-150 models with a 4.9L L6 MH engine, making it a straightforward and easy installation process.

Cons:

1. Potential for Leaks: During installation, there is a risk of coolant leaks, which can be time-consuming and messy to repair.

2. Requires Coolant Drain and Refill: Installing a new thermostat requires draining the coolant system and refilling it with new coolant, which can be an additional time and cost.

3. Limited Lifespan: Engine coolant thermostats typically have a limited lifespan, and they may need to be replaced multiple times over the life of the engine.

Conclusion:

The decision to buy a Gates SX-5977 engine coolant thermostat for a 1975-1996 Ford E-150 with a 4.9L L6 MH engine ultimately comes down to balancing the potential benefits and drawbacks. The pros, such as improved engine performance, preventing overheating, better fuel economy, cost-effectiveness, and easy installation, outweigh the cons, such as the potential for leaks, the need for a coolant drain and refill, and the limited lifespan.

Recommendation:

Based on the analysis of the pros and cons, I would recommend purchasing a Gates SX-5977 engine coolant thermostat for a 1975-1996 Ford E-150 with a 4.9L L6 MH engine. The benefits of improved engine performance, preventing overheating, better fuel economy, cost-effectiveness, and easy installation outweigh the potential drawbacks. However, it's essential to ensure that the installation process is done correctly to minimize the risk of coolant leaks and to follow the recommended coolant drain and refill procedure to ensure proper function and longevity of the new thermostat.

Details:

Gates Engine Coolant Thermostat for 1975 1996 Ford E-150 Econoline 4.9L L6 mh: Status: In Stock.

part #: sx5977 prices

  • $15.71-$34.14

specifications radiatoranch:

  • for models: E-150
  • for makes: Ford
  • for years: 1975-1996
  • brand: Gates
  • mpn: Sx-5977
  • type: Engine Coolant Thermostat
  • placement on vehicle: Belts Cooling Thermostat Housing
  • manufacturer warranty: Recommended Service Interval
  • item height: 2.750
  • ipn: C672 45-51
  • compatible model: E-150 Econoline
  • compatible year: 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Gates Engine Coolant Thermostat

seller radiatoranch:

  • # reviews: 658797
  • rating: 99.6%
  • city: Indianapolis, Indiana

payments radiatoranch:

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returns radiatoranch:

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

general radiatoranch:

  • Car Truck Parts Accessories > Engine Cooling Components > Radiators
  • condition: New

shipping radiatoranch:

  • transit: 2-7 Days
  • cost: $0.00
  • service: Standard, Expedited
  • type: Fixed
  • class: Standard, Expedited

offer radiatoranch:

  • availability: In Stock
  • started: May 19, 2026
  • quantity: 9
  • sold: 0
  • options: Ship-to-home
for models: e-150, for makes: ford, for years: 1975-1996, type: engine coolant thermostat, placement on vehicle: belts cooling thermostat housing, manufacturer warranty: recommended service interval, item height: 2.750, compatible model: e-150 econoline, compatible year: 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984, core charge: free no core charge, fitment type: direct replacement, bundle description: 1 pc genuine gates engine coolant thermostat,
category: auto parts > car truck parts accessories > engine cooling components > radiators, sku: 13801671204333892,

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