CAT 4348189 (434-8189) Hydraulic Piston Pump | Fits 345D 345D L 349D 349D L 349D2 349D2 L
CAT 4348189 (434-8189) Hydraulic Piston Pump | Fits 345D 345D L 349D 349D L 349D2 349D2 L
In Stock & Ready for Global Express Dispatch
Request a Quick Quote✓ 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-duty excavators, ensuring high-pressure stability and precision hydraulic power transmission. Built to deliver optimal volumetric efficiency, rapid hydraulic cycle times, and an extended service life in demanding earthmoving and mining applications.
Product Highlights
- Part Number: 4348189 / 434-8189
- 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 alloy housings and wear-resistant precision internal pistons and valve plates to withstand extreme hydraulic operating pressures.
- Optimized Hydraulic Power: Delivers continuous high-efficiency hydraulic flow, reducing internal friction and restoring factory digging force and attachment response.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4348189 / 434-8189 |
| Product Type | Heavy-Duty Hydraulic Piston Pump |
| Brand Compatibility | Caterpillar (CAT) |
| Application | Main Hydraulic System |
| Material | High-Strength Precision Alloys & Cast Materials |
| Warranty | 12 Months Warranty |
Compatible Models & Equipment
This premium hydraulic piston pump is precision-engineered to fit the following Caterpillar heavy excavators:
- Caterpillar 345D / 345D L
- Caterpillar 349D / 349D L
- Caterpillar 349D2 / 349D2 L
Key Applications
- Excavator Main Hydraulics: Powers essential boom, stick, bucket, travel, and swing hydraulic functions under continuous heavy loads.
- System Pressure Restoration: Eliminates slow hydraulic cycle times, weak digging force, and pressure drops caused by internal pump wear.
- Heavy Construction & Mining: Built to withstand severe duty cycles, high fluid temperatures, and harsh operating environments.
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 434-8189 / 4348189.
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 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 hydraulic system flushing, replacing oil filters, 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.
Need a Quote for CAT 4348189 (434-8189)?
Contact us today for the latest pricing, bulk discounts, and shipping availability.
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