CAT Water Pump – 5611122 for C7.1 / C6.6 Engines
This water pump (OEM Part Number: 5611122) is a high-quality replacement component designed for CAT construction equipment. Manufactured to meet or exceed OEM specifications, it ensures reliable performance and long service life in demanding operating conditions.
Applications
CAT C7.1 and C6.6 diesel engines. These engines power a wide range of CAT machines, including excavators, wheel loaders, motor graders and generator sets. The water pump circulates coolant through the engine block and radiator and is critical for preventing overheating. Always verify the part number against your engine serial number before ordering.
Engine Compatibility
- CAT C7.1: excavators, wheel loaders, motor graders and generator sets
- CAT C6.6: excavators, wheel loaders and other construction machines
We also supply water pumps, thermostats, fan belts and cooling system components for other CAT engines including C4.4, C6.4, C9 and C15. Send us your engine model and serial number and our team will confirm the correct pump.
Technical Specifications
- Product Type: Water Pump
- Part Number: 5611122
- Quality: OEM specification
- Condition: New
Usage Notes
- Confirm the part number against your engine serial number before ordering.
- A failed water pump can overheat and crack the cylinder head – address leaks immediately.
- Check the fan and pulley bearings while the pump is being replaced.
- After replacement, run the engine and re-check the coolant level as trapped air escapes.
Installation Guide
- Let the cooling system cool completely, then drain the coolant into a clean container.
- Remove the fan, belt guard and drive belt as required to access the pump.
- Loosen the hose clamps and detach the radiator hoses from the pump.
- Remove the pump mounting bolts and lift off the old pump.
- Clean the mounting face on the block completely and check it for corrosion.
- Install the new pump with a new gasket or O-ring; apply sealant only where specified.
- Tighten the mounting bolts evenly to the specified torque in a crossing pattern.
- Reinstall the hoses, belt and fan, and set the belt tension to specification.
- Refill with the specified coolant mixture and bleed the air from the system.
- Run the engine to operating temperature, then check for leaks and confirm proper coolant circulation.
Reference Price Range
The reference price for this water pump is approximately USD 180 – 450 per unit, depending on configuration, availability and shipping destination. Contact our sales team for a precise quotation. Volume discounts are available for fleet operators and repair shops.
Maintenance Tips
- Use the OEM-specified coolant and maintain the correct mixture ratio.
- Inspect the pump weep hole at every service – leakage there means the seal is failing.
- Check belt tension and condition regularly; a slipping belt causes overheating.
- Never run the engine without coolant, even briefly.
- Replace the thermostat at the same time as the pump when it shows signs of age.
Warranty
All products supplied by us are covered by a 12-month warranty against manufacturing defects in materials and workmanship.
Shipping and Delivery
In-stock items ship within 24-48 hours via express freight (DHL, FedEx, or UPS). Standard delivery time is 5-10 business days worldwide.
Why Choose Our Products?
- Direct OEM replacement with guaranteed fitment and performance
- Rigorous quality testing before shipment
- Competitive pricing with factory-direct supply chain
- Technical support available for installation and troubleshooting
- Proven reliability with thousands of units supplied worldwide
