339-0512 hydraulic pump for Caterpillar 320E 323E L LN LRR excavator
If you decide to buy equipment at a low price, make sure that you communicate with the real seller. Find out as much information about the owner of the equipment as possible. One way of cheating is to represent yourself as a real company. In case of suspicion, inform us about this for additional control, through the feedback form.
Before you decide to make a purchase, carefully review several sales offers to understand the average cost of your chosen equipment. If the price of the offer you like is much lower than similar offers, think about it. A significant price difference may indicate hidden defects or an attempt by the seller to commit fraudulent acts.
Do not buy products which price is too different from the average price for similar equipment.
Do not give consent to dubious pledges and prepaid goods. In case of doubt, do not be afraid to clarify details, ask for additional photographs and documents for equipment, check the authenticity of documents, ask questions.
The most common type of fraud. Unfair sellers may request a certain amount of advance payment to “book” your right to purchase equipment. Thus, fraudsters can collect a large amount and disappear, no longer get in touch.
- Transfer of prepayment to the card
- Do not make an advance payment without paperwork confirming the process of transferring money, if during the communication the seller is in doubt.
- Transfer to the “Trustee” account
- Such a request should be alarming, most likely you are communicating with a fraudster.
- Transfer to a company account with a similar name
- Be careful, fraudsters may disguise themselves as well-known companies, making minor changes to the name. Do not transfer funds if the company name is in doubt.
- Substitution of own details in the invoice of a real company
- Before making a transfer, make sure that the specified details are correct, and whether they relate to the specified company.
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+86 199 2461 6345
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1. Product Core Overview
E-Series Precision: Specifically engineered for the Caterpillar 320E and 323E platforms, including L (Long), LN (Long Narrow), and LRR (Log Loader/Reduced Radius) configurations. This pump is designed to handle the high-efficiency requirements of Tier 4 engine integration.
13-Year Specialized Expertise: Supplied by a professional factory with 13 years of leadership in CAT hydraulic systems, ensuring every unit meets the stringent flow-compensation standards of the E-series.
Exact OEM Compatibility: Fully interchangeable with Caterpillar part numbers 339-0512 (3390512) and 334-9992 (3349992). This is a direct-fit replacement that restores factory-level breakout force and cycle times.
2. Technical Specifications & Compatibility
Product Name: Main Hydraulic Pump Assembly
Part Numbers: 339-0512 / 334-9992 / 3390512 / 3349992
Machine Compatibility: * CAT 320E, 320E L, 320E LN, 320E LRR, 320E RR
CAT 323E, 323E L, 323E LN, 323E SA
Quality Tiers: Original New, Premium OEM Grade, and High-Performance Rebuild options available.
Core Build: Constructed with high-density alloy cylinder blocks and precision-lapped piston sets to ensure zero internal leakage and maximum thermal stability under heavy load.
3. Why Partner with a 13-Year Professional Expert?
Technical Mastery: We understand the electronic load-sensing nuances of the 320E/323E series. Our pumps are calibrated to sync perfectly with the machine’s ECM, preventing hydraulic "lag" or engine over-speeding.
Full-Body Parts Support: Our expertise covers the entire machine—from main pumps and travel motors to undercarriage and attachments—supporting brands like CAT, Volvo, Komatsu, and Sany.
Flexible Quality Selection: Whether you require an original premium unit for a long-term project or a cost-effective aftermarket solution for an older machine, we provide clear, tiered quality options.
Direct Factory Prices: Benefit from our optimized 13-year supply chain, providing high-quality hydraulic solutions at competitive wholesale prices.
Proven Global Reliability: Trusted by international repair workshops and distributors for consistent quality, expert technical support, and rapid warranty response.
4. Fast Global Delivery & Logistics
We prioritize speed to get your E-series excavator back to work:
Express Delivery: Rapid door-to-door shipping via DHL, FedEx, UPS, and TNT (Typical arrival: 3-7 business days).
Air Freight: Fast airport-to-airport delivery for urgent, high-priority project needs.
Sea Freight: The most economical solution for bulk inventory orders and large-scale replenishment.
Secure Export Packaging: Every 339-0512 pump is secured in a reinforced, shock-proof wooden crate to ensure it arrives in perfect condition.
5. Ordering & Professional Support
Fitment Verification: Please provide your machine's serial number (e.g., prefix TJR, PWB, or REW) to ensure 100% fitment accuracy.
Real-Time Quote: Contact us today for the latest pricing, stock status, and tiered quality comparisons.
Installation Guidance: Our technical team is available 24/7 to provide advice on hydraulic system flushing and initial pump priming.