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CAT 1727766(172-7766) Water Pump | Fits CW-16 3304 3306 D330C D333C 3306B 615 615C II 615C 525 515 966F 966G 972G 966F II

CAT 1727766(172-7766) Water Pump | Fits CW-16 3304 3306 D330C D333C 3306B 615 615C II 615C 525 515 966F 966G 972G 966F II

Premium engine water pump designed as a direct OEM-compatible replacement for Caterpillar (CAT) heavy equipment powered by 3306, 3306B, 3304, D330C, and D333C engines. Built to deliver maximum coolant flow, optimal thermal regulation, and exceptional durability under high-load earthmoving, mining, and construction environments.

Product Highlights

  • Part Number: 1727766 / 172-7766
  • Direct Fit OEM Replacement: Form, fit, and function perfectly match original Caterpillar engineering specifications, ensuring precise bolt-on installation without any field modifications.
  • Heavy-Duty Construction: Manufactured with premium-grade cast iron housings and wear-resistant impellers to withstand high cooling system pressures and resist cavitation.
  • Optimized Cooling Efficiency: High-performance internal seal and bearing design prevents coolant leakage, reduces mechanical friction, and ensures stable engine temperature regulation to prevent overheating.

Technical Specifications

Parameter Specification
Part Number 1727766 / 172-7766
Product Type Heavy-Duty Engine Water Pump
Brand Compatibility Caterpillar (CAT)
Engine Compatibility CAT 3306 / 3306B / 3304 / D330C / D333C
Material High-Strength Precision Cast Iron & Carbon-Ceramic Seals
Warranty 12 Months Warranty

Compatible Models & Equipment

This premium engine cooling water pump is precision-engineered to fit a wide range of Caterpillar heavy machinery configurations:

  • Wheel Loaders: 966F / 966F II / 966G / 972G
  • Wheel Tractor-Scrapers: 615 / 615C / 615C II
  • Skidders & Forestry Equipment: 515 / 525
  • Pneumatic Rollers: CW-16

Key Applications

  • Engine Thermal Management: Continuously circulates coolant throughout the engine block and radiator to dissipate intense operational heat.
  • Cavitation & Corrosion Resistance: Upgraded impeller design reduces coolant foaming and cavitation erosion, preserving water jacket integrity.
  • Cooling System Restoration: Replaces weeping or worn factory water pumps to eliminate coolant loss, dropping engine operating temperatures back to OEM standards.

Why Choose Our Aftermarket CAT Water Pumps?

  • Guaranteed OEM Quality: Manufactured under strict ISO 9001 standards using high-performance unitized seals to ensure superior leak protection and an extended service life.
  • Cost-Effective Solution: Achieve absolute dealer-level reliability and heavy-duty structural integrity at a fraction of the high OEM price tag.
  • Ready to Ship: Kept in stock for immediate worldwide dispatch, heavily slashing your machinery's expensive breakdown downtime.
  • Industry-Leading Support: Confidently backed by a solid 1-year warranty and supported by our technical team of heavy machinery parts experts.

Frequently Asked Questions (FAQ)

Q: Does this water pump package include the mounting gaskets?

A: Yes, our 172-7766 water pump comes complete with high-quality installation gaskets to ensure a reliable, leak-free seal right out of the box.

Q: What are the common symptoms of a failing CAT 3306 engine water pump?

A: Standard indicators include coolant weeping from the pump body weep hole, rising engine temperature gauges, visible coolant stains around the front gear housing, or unusual bearing noise from the pump pulley area.

Q: Is this water pump suitable for marine versions of the 3306 engine?

A: This water pump is designed for standard industrial and earthmoving configurations of the 3306/3304 series. Please verify your specific engine arrangement number with our team before ordering to ensure correct fitment.

Q: How long does international delivery take for urgent parts replacement?

A: Orders for in-stock components are dispatched within 3–5 business days. We provide global express air freight shipping options to minimize job-site disruption and get your equipment back to work fast.


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