CATEngine Parts

6Y1139 Spare Parts Component — Cat D7R D7H

This thermostat housing is a critical component responsible for regulating engine coolant temperature, ensuring optimal operating conditions. Manufactured to precise standards, it provides reliable thermal control superior to a corroded or leaking original housing. Operators may notice the engine running too hot or too cold, or coolant leaks when this housing fails.

Spare Parts Component – Part No 6Y1139 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeThermostat Housing
MaterialCast aluminum
ApplicationEngine cooling system
Service LifeReplace if corroded, leaking, or damaged
CompatibilityOEM specification
ConditionNew — Genuine CAT

Failure Symptoms

The initial symptom of a failing thermostat housing is often coolant leakage from the housing gasket or body. If left unaddressed, this can lead to engine overheating or consistently running too cold, impacting efficiency and potentially causing component stress. Continued operation with a compromised housing risks significant engine damage due to improper thermal regulation.

Installation Tip

Ensure the mating surfaces are clean and free of old gasket material to achieve a leak-free seal. Tighten the housing bolts evenly in a cross pattern to prevent distortion.

Service Note

Always replace the thermostat and gasket when servicing the thermostat housing to ensure optimal cooling system performance.