Caterpillar SBS80 391-9442 hydraulic pump for Caterpillar 312D2 GC 313D2 GC midi 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.
Seller's contacts


1. Product Core Overview
Optimized for GC Series Efficiency: Specifically engineered for the Caterpillar "GC" series, balancing fuel economy with high hydraulic power for general construction and utility applications.
13-Year Industry Authority: Supplied by a professional factory and specialist with 13 years of expertise in high-pressure hydraulic systems and comprehensive excavator spare parts.
Exact OEM Fitment: Fully compatible with Caterpillar part numbers 391-9442 and 387-2606, providing a 100% direct-fit replacement that maintains original machine performance and fuel efficiency.
2. Technical Specifications & Compatibility
Product Name: Main Hydraulic Pump Assembly / Axial Piston Pump
Caterpillar Part Numbers: 391-9442 / 387-2606 / 3919442 / 3872606
Machine Compatibility:
Caterpillar 312D2 GC
Caterpillar 313D2 GC
Core Build: Constructed with high-strength alloy cylinder blocks, precision-ground piston sets, and heat-treated swash plates for maximum wear resistance.
Quality Tier Options: Genuine Original, Premium OEM Grade, and High-Performance Aftermarket.
Testing Standard: 100% bench-tested for volumetric efficiency, pressure response time, and thermal stability.
3. Why Partner with a 13-Year Professional Service?
Technical Mastery: We understand the specific flow-control and load-sensing requirements of the CAT D2 GC series, ensuring our pumps prevent "engine lugging" and ensure smooth operation.
Comprehensive Parts Solution: Our expertise covers the entire machine—from pumps and travel motors to undercarriage and attachments—supporting all major brands (CAT, Volvo, Komatsu, Sany, etc.).
Flexible Quality Standards: We provide various quality tiers to match your specific budget and the remaining service life of your machinery.
Direct Factory Prices: Benefit from our optimized supply chain with highly competitive wholesale pricing directly from the source.
Global Trust: Trusted by heavy equipment repair shops, fleet managers, and distributors worldwide for consistent reliability.
4. Fast Global Delivery & Logistics
We prioritize speed to get your equipment back to work:
Express Delivery: Rapid door-to-door shipping via DHL, FedEx, UPS, and TNT (Typical arrival: 3-7 business days).
Air Freight: Efficient airport-to-airport delivery for urgent, high-priority hydraulic assemblies.
Sea Freight: Most economical shipping for bulk stock orders and large-scale inventory replenishment.
Secure Export Packaging: Every pump is secured in a reinforced, shock-proof wooden crate to guarantee it arrives in perfect factory condition.
5. Ordering & Professional Support
Fitment Verification: Please share your machine's serial number or a photo of the pump's nameplate to ensure 100% fitment accuracy.
Real-Time Quote: Contact us today for up-to-date pricing, tiered quality options, and current stock availability.
Installation Advice: Our technical team is available 24/7 to provide guidance on hydraulic system flushing and initial pump priming procedures.