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CAT 2478917 (247-8917) Hydraulic Piston Pump | Fits 345B II & 345B II MH

CAT 2478917 (247-8917) Hydraulic Piston Pump | Fits 345B II & 345B II MH

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✓ Premium Caterpillar Quality Spec  |  ✓ 100% Direct Fit  |  ✓ Fast Global Shipping

Premium hydraulic piston pump designed as a direct OEM-compatible replacement for Caterpillar (CAT) heavy excavators, ensuring precision control and reliable power transmission. Built to deliver optimal volumetric efficiency, high-pressure performance, and an extended service life in demanding earthmoving, mining, and material handling applications.

Product Highlights

  • Part Number: 2478917 / 247-8917
  • Direct Fit OEM Replacement: Form, fit, and function match original Caterpillar engineering specifications perfectly without requiring any modifications.
  • Heavy-Duty Construction: Manufactured with high-strength alloys and wear-resistant precision internal parts to withstand extreme hydraulic pressures and continuous high-load operations.
  • Optimized Efficiency: Advanced piston and valve plate design minimizes internal friction, ensures smooth hydraulic flow, and optimizes fuel efficiency for your machinery.

Technical Specifications

Parameter Specification
Part Number 2478917 / 247-8917
Product Type Heavy-Duty Main Hydraulic Piston Pump
Brand Compatibility Caterpillar (CAT)
Application Main Hydraulic Drive & Implement System
Material High-Strength Precision Alloys & Cast Materials
Warranty 12 Months Warranty

Compatible Models & Equipment

This premium piston pump is precision-engineered to fit the following Caterpillar heavy machinery:

  • Caterpillar Excavators: 345B II / 345B Series II
  • Caterpillar Material Handlers: 345B II MH

Key Applications

  • Excavator Boom & Implement Hydraulics: Powers essential boom lifting, arm digging, bucket curling, and attachment functions.
  • Heavy Construction & Material Handling: Built to withstand rigorous duty cycles in high-volume earthmoving, quarry, and scrap metal handling sites.
  • System Pressure Restoration: Restores original quick hydraulic cycle times, digging force, and smooth swing control back to OEM standards.

Why Choose Our Aftermarket CAT Pumps?

  • Guaranteed OEM Quality: Manufactured under strict ISO 9001 quality standards to match or exceed original equipment performance and durability.
  • Cost-Effective Solution: Achieve premium dealer-level reliability and identical performance at a fraction of the OEM replacement price.
  • Ready to Ship: Kept in stock for immediate worldwide dispatch to reduce your machine's idle downtime significantly.
  • Industry-Leading Support: Backed by a full 1-year warranty and a team of professional heavy machinery hydraulic technical experts.

Frequently Asked Questions (FAQ)

Q: Is this piston pump a genuine Caterpillar part?

A: This is a premium-grade, OEM-compatible aftermarket replacement pump. It is engineered to exact CAT dimensional and technical standards, serving as a direct drop-in replacement for part number 247-8917.

Q: What is covered under the 12-month warranty?

A: Our 12-month warranty fully covers all manufacturing defects, material failures, and workmanship issues under standard and proper operating conditions.

Q: Does this pump come pre-lubricated or ready for direct installation?

A: The pump arrives ready for installation. We highly recommend standard system flushing and filling with fresh hydraulic oil before initial startup to protect internal precision components.

Q: How long does international shipping take?

A: In-stock orders are typically dispatched within 3–5 business days. We offer expedited shipping and global air freight options for emergency machine breakdown situations.


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