This OTTO C9.3 cylinder head gasket kit with part number 480-0204 is a complete engine overhaul repair kit tailored for CAT 336E and 336F excavators. It covers all essential sealing gaskets required for cylinder head disassembly and assembly, providing comprehensive sealing protection for C9.3 engine combustion chambers, oil circuits and water circuits to ensure standardized engine overhaul procedures.

This OTTO fuel injection pump solenoid valve, part number 375‑8254 / 3758254, is a precision fuel control component for Caterpillar C4.4 and C7.1 engines. It provides fast and accurate fuel‑flow switching, maintaining stable fuel pressure during long‑time excavation work and effectively avoiding unstable engine speed or power drop caused by fuel supply failure.

This OTTO engine overhaul gasket kit with part number 511-5543 / 5115543 is a complete sealing repair set designed for CAT C15 and C18 diesel engines. It includes cylinder head gaskets and matched oil seals to fully restore engine sealing performance, effectively solving common faults such as oil leakage, air leakage and unstable cylinder pressure on CAT 349D excavators during long-term heavy-duty operation.

This OTTO water tank radiator with part number 508-6290 / 5086290 is a high-quality aftermarket cooling part designed for Caterpillar excavators equipped with C4.4 and C7.1 engines. It provides efficient and stable heat dissipation circulation, effectively lowering engine operating temperature and solving common problems such as engine overheating, high water temperature and power loss during long-hour heavy-load operation of CAT 320GC, 320 and 323 excavators.

This OTTO C9 engine wiring harness, part number 283‑2762, is an OEM‑grade injector cable specially made for CAT excavators. It delivers stable signal transmission between the engine injector and ECU, effectively avoiding common failures such as poor ignition, unstable engine speed and circuit breakdown caused by ageing or damaged original wiring.

This OTTO hydraulic travel drive motor gearbox is a professional travel device replacement part designed for CAT 312, 312B, 312C and 312D excavators. It adopts integrated hydraulic drive and reduction gear structure, precisely matching the original equipment installation dimensions and hydraulic parameters. The unit provides stable walking torque and sensitive hydraulic response, ensuring flexible and steady traveling, steering and climbing performance for CAT 312 series excavators in various construction scenarios.

This OTTO high-quality excavator controller with part number 178-9090 (1789090) is a professional ECM computer board designed for Caterpillar 320C, 322C and 325C excavators. Adopting industrial-grade core chips and original standard program calibration, this controller achieves precise engine data monitoring and power parameter adjustment. It matches the original CAT circuit and data protocol perfectly, ensuring synchronous and efficient operation of the excavator engine and hydraulic system.

The Caterpillar 151-9306 (1519306) is a genuine CONTROL GP-ENGINE & HYD PUMP electronic control module (ECM) specifically engineered for CAT 345B and 345B L excavators. This computer board serves as the brain of the hydraulic system, precisely regulating pump output, engine load sensing, and power management to ensure optimal machine performance under varying digging conditions. By processing real-time sensor data from the engine and hydraulic circuits, it adjusts pump displacement and flow rates automatically, improving fuel efficiency while maintaining breakout force.

Manufactured to OEM performance standards, this fuel pressure sensor features high-precision sensing elements and durable construction, resistant to harsh working conditions of construction machinery. It serves as a direct replacement for faulty original sensors, quickly restoring accurate fuel pressure monitoring for CAT equipment.

Crafted for heavy-duty construction applications, this aftermarket pilot valve meets the original equipment’s performance standards, ensuring reliable hydraulic signal transmission and durable use in harsh working conditions. It is a direct replacement part for worn or damaged foot pedal valves, restoring smooth and accurate control to the compatible CAT excavator models.

OTTO Excavator Construction machinery parts Engine ECU Computer board 172-9389 Controller This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO Excavator Construction machinery parts 422-3863 Oil Filter For Caterpillar parts This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty