Egr Cooler Sub Assembly 4Hk1
Product Specifications
| Compatible Model(s) | OEM Part Number | GCO Code | Part Type | Availability |
|---|---|---|---|---|
| SUB ASSEMBLY 4HK1 | 8973789392 / 309957 | F22.20 | THERMOSTAT / THERMOSTAT SEAT | ✓ In Stock |
Product Description
OEM Part Numbers: 8973789392 / 309957
Designed for the SUB ASSEMBLY 4HK1, the 8973789392 egr cooler sub assembly 4hk1 provides effective heat dissipation for the engine or hydraulic circuit — critical for preventing overheating and protecting internal components. A failed or leaking cooler allows engine temperatures to climb beyond safe limits, risking head gasket failure, warped components, and catastrophic engine damage. Manufactured to OEM reference 8973789392 for accurate installation on the SUB ASSEMBLY 4HK1 and immediate restoration of cooling capacity.
Key Features:
- Full Cooling Capacity: Restores rated heat transfer performance to maintain engine temperatures within OEM specification.
- OEM Compatible: Built to reference 8973789392 for compatible fitment on the SUB ASSEMBLY 4HK1.
- Leak-Free Cooling Circuit: Precision-sealed construction prevents coolant or fluid loss from the heat exchanger.
The 8973789392 egr cooler sub assembly 4hk1 is a critical thermal management component for preventing overheating and protecting engine integrity on the SUB ASSEMBLY 4HK1.
What Does This Thermostat / Thermostat Seat Do?
The thermostat is a temperature-sensitive valve that blocks coolant flow to the radiator until the engine reaches its designed operating temperature. Once at temperature, it opens progressively to allow the radiator to regulate engine heat. The thermostat seat (housing) seals the thermostat in the coolant circuit.
Possible Thermostat / Thermostat Seat Problem Symptoms
If your machine is showing any of the following, a faulty thermostat / thermostat seat may be the cause:
- Engine taking abnormally long to reach operating temperature in normal conditions
- Engine overheating rapidly when the thermostat is stuck in the closed position
- Temperature gauge fluctuating erratically rather than holding steady at operating temperature
- Coolant leaking from the thermostat housing or seat sealing surfaces
Why Buy From GCO Products?
Gautam & Company has been supplying earthmoving machinery spare parts since 1999. Here is why contractors, fleet operators, and dealers across India trust us.
Over 27 years of experience in the earthmoving parts industry.
Our team helps you confirm the right part before you order.
Proper GST invoices on every order for your accounting needs.
Fast dispatch from Jalandhar to all states across India.
Volume pricing available for fleet owners, dealers and distributors.
Both genuine OEM and quality aftermarket options available.
How to Confirm Compatibility
To ensure this part is the correct fit for your machine, have the following ready when you contact us:
- 1Machine Model & Year
E.g. Komatsu PC200-8, CAT 320D, JCB JS205 — include the model suffix if known.
- 2Machine Serial Number
Found on the machine's chassis plate. Helps confirm the exact production variant.
- 3OEM Part Number
From your parts manual, the old part itself, or the machine's service documentation.
Not sure if this part fits your machine?
WhatsApp Us to Confirm Typically replies within a few hoursDisclaimer: This is an aftermarket replacement part supplied by GCO Products (Gautam & Company) and is not manufactured by, affiliated with, or endorsed by the original equipment manufacturer (OEM). All brand names, model numbers, and OEM part numbers referenced on this page are used solely for the purpose of identifying compatibility and describing the application of this part. All trademarks, registered marks, and brand identifiers remain the exclusive property of their respective owners. GCO Products claims no association with, sponsorship by, or endorsement by any OEM brand mentioned herein.
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