CATEngine Parts

126-5607 Heater Core — Cat 3306 3406

This heater core is designed to transfer heat from the engine's coolant to the cabin air, providing essential warmth for operator comfort and visibility in cold conditions. Manufactured to meet rigorous standards, it offers superior heat dissipation compared to a corroded or leaking core. Symptoms of a failing heater core include a persistent fogging of the windshield, a sweet, coolant-like odor inside the cab, or a noticeable drop in cabin temperature.

Heater Core – Part No 126-5607 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

M IST.', };

Related CAT Parts

From the same category — may also be needed

6n5392
Engine Parts Component
4P1659
Engine Parts Component
273-4246
Hose
200-3373
Swing Motor
340-2520
Oil Cooler Core
197-3901-20r-4827
Fuel Injection Pump

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeHeater Core
MaterialAluminum or Copper
ApplicationCabin heating system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A primary indicator of a failing heater core is a persistent fogging or steaming of the interior windshield, especially when the engine is warm. If ignored, the heating performance will degrade, and coolant may be lost, leading to engine overheating. The worst consequence is a compromised operator environment and potential engine damage from overheating.

Installation Tip

Before removing the old heater core, drain the engine coolant to minimize spillage and contamination. Ensure all hose connections are clean and free of debris to prevent leaks after installation.

Service Note

Inspect the cabin air filter and blower motor for proper operation when replacing the heater core.