Komatsu PC450LC-6K PC450-6K Hydraulic Arm Cylinder 208-63-K2120 140mm Bore 1460mm Stroke Aftermarket

This reliable aftermarket hydraulic arm cylinder is engineered to replace the original component on Komatsu PC450LC-6K and PC450-6K medium-heavy excavators. As a key part of the working mechanism, it drives the arm to extend and retract steadily, adapting to daily construction, road engineering and material handling tasks. Produced in strict accordance with original industrial standards, this cylinder features identical mounting dimensions, pin hole spacing and hydraulic port layout. It allows direct on-site installation without any cutting, welding or extra adjustments.

1. Perfect Fit & Interchangeability: Matches all structural parameters of the original 208-63-K2120 part, connecting seamlessly with the arm assembly and hydraulic pipelines of PC450 series excavators.
2. Durable Practical Structure: Reinforced cylinder tube and connecting lugs stand up to frequent dynamic loads and minor impacts on regular construction sites, extending the overall service life.
3. Rigorous Quality Control: Every finished cylinder undergoes continuous full-stroke movement test and high-pressure tightness inspection to eliminate internal and external oil leakage risks.
4. Outstanding Cost Performance: Delivers stable working performance equivalent to genuine parts, helping spare parts dealers and maintenance teams cut down overall procurement costs effectively.
5. Diversified Delivery Solutions: In-stock goods can be shipped out within 3 working days. Air freight is available for urgent demands, while sea freight is recommended for large batch orders to control logistics expenses.

Our factory focuses on manufacturing hydraulic cylinders for Komatsu mid-range excavator models for over a decade. We supply a complete series of boom, arm and bucket cylinders for PC400, PC450 and PC500 series. Our products have gained consistent recognition from clients and are widely exported to construction machinery aftermarket markets across Africa, Southeast Asia and the Middle East.

Q1: Can this arm cylinder be used on PC450-7?
A: It cannot be used interchangeably. PC450-7 adopts independent part numbers and different structural sizes, please confirm the equipment model before ordering.
Q2: Does the standard package include the seal repair kit?
A: Seal kit is not included in standard products. You can purchase the dedicated repair kit separately, and enjoy a favorable combined price when buying together.
Q3: What packaging is adopted for long-distance sea transportation?
A: The cylinder is filled with anti-rust oil inside, the piston rod is coated with anti-rust grease, then wrapped with waterproof PE film and packed in sturdy export plywood cases.
Q4: Is there a preferential price for purchasing a full set of working cylinders?
A: Full set orders enjoy tiered discounts. We also provide consolidated shipment service to save your total logistics cost.
Q5: What support will be provided if oil leakage occurs within the warranty period?
A: Please provide clear photos of the leakage area and the excavator serial number. We will arrange free seal replacement and professional remote technical guidance in time.