1. Thermostats & Parts For Sale
  2. sku: 10610821186040731
  3. CUMMINS 3942397

CUMMINS 3942397 Valve Diesel Engine Thermostat Housing Water Upper 5.9 Neck

fits year: 2024.

3942397 Cummins 5.9 24 Valve Diesel Engine Thermostat Housing Water Neck Upper

( Brand: Cummins ), ( Manufacturer Part Number: 3942397 ), ( Type: Thermostat Housing ), ( Fitment Type: Direct Replacement ), ( Opening Temperature: Housing )

Review CUMMINS 5.9 Valve Diesel Engine Thermostat Housing Water Neck Upper fits 2024

The Cummins 3942397 thermostat housing for the 5.9 liter 24-valve diesel engine is a crucial component in maintaining optimal engine temperature. This housing, specifically designed for Cummins engines, protects the thermostat and ensures proper cooling system functionality.

The upper water neck of this housing is engineered to connect securely to the engine's water pump or cooling system. Made of durable materials, this component is designed to withstand the rigors of heavy-duty use. The housing is engineered to provide a snug fit, minimizing the potential for leaks and ensuring efficient cooling system performance.

The thermostat housing is a vital part of the engine cooling system. It houses the thermostat, which regulates the engine's temperature by controlling the flow of coolant between the engine and the cooling system. When the engine reaches its optimal operating temperature, the thermostat opens, allowing coolant to circulate freely. When the engine cools down, the thermostat closes, preventing the coolant from flowing back into the engine, which could lead to overcooling.

The Cummins 3942397 thermostat housing is a direct replacement for the original equipment, ensuring a perfect fit and reliable performance. It is designed to meet or exceed the original equipment specifications and is backed by Cummins' reputation for quality and durability.

In summary, the Cummins 3942397 thermostat housing water neck upper is a critical component in the cooling system of a 5.9 liter 24-valve diesel engine. It is designed to provide a secure connection to the water pump or cooling system, protect the thermostat, and ensure efficient cooling system performance. This housing is a direct replacement for the original equipment and is backed by Cummins' reputation for quality and durability.

Pros and Cons of Buying a Cummins 3942397 5.9 24 Valve Diesel Engine Thermostat Housing Water Neck Upper

The Cummins 3942397 5.9 24 Valve Diesel Engine Thermostat Housing Water Neck Upper is an essential component for maintaining optimal engine temperature in Cummins 5.9L diesel engines. This part is critical for ensuring efficient engine operation and preventing potential engine damage. In this analysis, we will discuss the advantages and disadvantages of purchasing this thermostat housing water neck upper.

Pros:

1. Enhanced engine performance: Replacing a worn-out or damaged thermostat housing water neck upper can improve engine performance by ensuring proper cooling.

2. Cost-effective: Compared to repairing other engine components due to coolant leaks or overheating, replacing the thermostat housing water neck upper is a cost-effective solution.

3. Reliability: The Cummins 3942397 thermostat housing water neck upper is a high-quality part designed to meet OEM specifications, ensuring long-lasting performance.

4. Easy installation: This part is relatively easy to install, making it a suitable DIY project for those who prefer to work on their vehicles.

Cons:

1. Potential for leaks: As with any engine cooling component, there is a risk of coolant leaks. Careful installation and regular inspection are essential to prevent leaks.

2. Cost: While this part is cost-effective compared to other engine repairs, it still requires an investment.

3. Availability: Depending on the location and availability of the part, it may take some time to receive the thermostat housing water neck upper.

Conclusion:

The Cummins 3942397 5.9 24 Valve Diesel Engine Thermostat Housing Water Neck Upper is a crucial engine component that plays a significant role in maintaining proper engine temperature and cooling. While there are potential disadvantages, such as the risk of leaks and the cost, the advantages, like improved engine performance and reliability, far outweigh the cons.

Recommendation:

If you own a Cummins 5.9L diesel engine and suspect that your thermostat housing water neck upper is worn out or damaged, it is recommended to replace it as soon as possible. By investing in this component, you can ensure optimal engine performance and prevent potential engine damage. Remember to follow proper installation procedures to minimize the risk of leaks and ensure the longevity of the new part.

Details:

It is in good shape REF: 318-A2. Thermostat housing removed from a 98.5 Dodge Ram 2500 with 24V Cummins Engine.

part #: 3942397 price

  • $20.00

specifications theostapa:

  • for years: 2024
  • brand: Cummins
  • mpn: 3942397
  • type: Thermostat Housing
  • fitment type: Direct Replacement
  • opening temperature: Housing

returns theostapa:

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

shipping theostapa:

  • cost: $8.65
  • transit: 5-11 Days
  • type: Calculated
  • class: Standard
  • service: USPS Ground Advantage, UPS Ground
  • carrier: USPS, UPS

payments theostapa:

  • wallet: Google-pay
  • other
  • credit card: Diners-club

offer theostapa:

  • options: Ship-to-home
  • sold: 0
  • started: February 15, 2026
  • availability: In Stock
  • quantity: 1

general theostapa:

  • Car Truck Parts Accessories > Engine Cooling Components > Thermostats Housings
  • condition: Used

seller theostapa:

  • city: Fayetteville, Tennessee
  • # reviews: 788
  • rating: 98.8%
for years: 2024, type: thermostat housing, fitment type: direct replacement, opening temperature: housing,
category: auto parts > car truck parts accessories > engine cooling components > thermostats housings, sku: 10610821186040731,
Cummins 3942397 Is Similar To:
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1 offer $20.00 USD
  • Used. Offer #1 priced at $20.00 + $9.35 shipping estimate = $29.35* total. It is in good shape REF: 318-A2 Thermostat housing removed from a 98.5 Dodge Ram 2500 with 24V Cummins Engine.+$9.35 shipping

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