The OTTO YA00004881 is a vital hydraulic oil cooler for the Hitachi ZX870‑5G excavator cooling system. It efficiently dissipates heat from hydraulic fluid, preventing overheating, maintaining stable system pressure, and protecting key hydraulic components from premature wear.

The OTTO 450-4791 External Wiring Harness is a professional replacement part for heavy machinery electrical systems. It safely connects sensors, controllers, and electrical components, reducing circuit faults and maintaining stable operation of the excavator’s electronic and hydraulic control systems.

The VOE11128781 Electrical Wiring Harness is a core component for the heavy machinery electrical system. It integrates and protects all critical circuits, sensors, and control modules, delivering consistent connectivity to maintain full machine functionality and reduce electrical downtime.

Maximize your excavator's electronic control performance with the OTTO C15 Engine Harness (P/N: 264-2354, 2642354), a premium aftermarket replacement designed for durability and precise fitment. This high-quality electronic control wire harness restores reliable signal transmission to your CAT excavators, offering a cost-effective alternative to OEM parts

The OTTO VOE11423395 Wiring Harness is a premium electrical system core component exclusively engineered for Volvo EC360B Excavator, serving as the critical "neural network" for the machine’s electrical power and signal transmission. Manufactured to match OEM specifications, this harness ensures seamless compatibility with the Volvo EC360B’s original electrical architecture, guaranteeing stable connection and precise data interaction for all heavy machinery electrical modules.

Maximize your excavator’s engine performance with the OTTO Crankshaft Bearing (P/N: 1-11510093-3), a premium aftermarket replacement designed for durability and precise fitment for Hitachi ZX450-3 6WG1 engines. This high-quality bearing set restores reliable crankshaft support to your heavy equipment, offering a cost-effective alternative to OEM parts for engine rebuilding.

This OTTO hydraulic O-ring seal (part number 0365326) is designed for Komatsu excavator models including EX350LCH-V, PC350, PC400, and PC450. It provides a reliable, leak-proof seal in hydraulic systems, ensuring consistent performance and protection against fluid loss under high-pressure conditions.

This OTTO needle roller bearing (part number 503806) is designed for Hyundai excavator models R340L, R380, R420, and R450. It provides precise support within the transmission system, reducing friction and ensuring smooth power transfer under heavy-duty operating conditions.

This OTTO main pump bearing (part number 958740) is an original-grade component designed for HPV102 and HPV118 hydraulic main pumps. It is compatible with Hitachi excavator models including EX200-5, ZX200-1, ZX200-5A, ZX240-3, and ZX270, ensuring smooth rotation and reliable performance under high-pressure conditions.

This OTTO hydraulic seal ring/O-ring set (part number 1-13779011-0) is designed for excavators including Hitachi ZX450-3, PC450, and PC490. It provides a reliable, leak-proof seal for hydraulic connections, ensuring consistent system performance and protection against fluid loss or contamination.

This OTTO O-ring (part number 8C-5240) is designed for hydraulic systems in Komatsu PC200, PC210, PC220, and PC240 excavators. It provides a reliable, leak-resistant seal for fluid connections, ensuring consistent hydraulic performance and protection against contaminants.

This OTTO lever gas spring assembly (compatible with part numbers 20Y-54-36342 / 20Y5436342) is designed for excavator models PC200-8 and PC220-8. It provides controlled and smooth lifting support for levers or access panels, enhancing operator convenience and safety during maintenance or adjustments.