Maximize your excavator's operational efficiency with the OTTO Stick Cylinder Assembly (P/N: 177-2443), a premium aftermarket replacement designed for heavy-duty durability and precise OEM-style fitment. This high-quality arm hydraulic ram restores stable and powerful hydraulic movement to your CAT excavator, offering a cost-effective alternative to genuine OEM cylinder parts.

Maximize your diesel engine’s performance with the OTTO 4921776 ECM Engine Control Module, a premium aftermarket replacement built for durability and precise OEM fitment. This high-quality ECU computer board restores reliable electronic control to your Cummins 6BT 5.9 diesel motor, delivering a cost-effective alternative to genuine OEM controller units.

The OTTO Long Cylinder Head is a professional engine cylinder head component designed exclusively for 4HK1 engines in excavators. It provides a secure foundation for valves, valve seats, and other top-end engine parts, ensuring airtight sealing, smooth valve operation, and consistent engine power output—essential for restoring engine functionality and minimizing downtime in harsh heavy-duty working environments.

The OTTO 8‑98206965 is a critical engine cylinder block assembly designed for excavator 6HK1 T3 engine repair and overhaul. It provides a rigid foundation for internal engine components, supporting proper compression, lubrication, and heat dissipation to maintain consistent power output in heavy machinery.

The OTTO 486335 Bucket Cylinder is a high‑performance replacement part specially made for Hitachi ZX360H‑3G excavator bucket control. It ensures smooth and responsive bucket movement, supports heavy digging and loading tasks, and maintains consistent performance under tough working conditions.

Restore your engine’s peak performance with the OTTO 3066 Overhaul Repair Kit, a premium aftermarket liner and piston kit engineered for CAT 3066 engines in excavators. This all-in-one spare part set delivers OEM-matched precision and lasting durability, offering a cost-effective solution for full engine overhaul and maintenance.

Maximize your excavator's hydraulic system performance with the OTTO HPV118 Hydraulic Pump Head Cover (P/N: 312710), a premium aftermarket replacement designed for durability and precise fitment. This high-quality head cover is a critical excavator part for Hitachi ZAX200-3, restoring reliable sealing and protection to the HPV118 hydraulic pump, while offering a cost-effective alternative to OEM parts.

This OTTO cylinder head gasket (part number 20970720) is engineered for Volvo excavator engines used in models like the EC210D, EC240, EC290, and EC350. It provides a durable, high-temperature seal between the engine block and cylinder head to ensure reliable compression, prevent leaks, and support optimal engine performance.

This OTTO cylinder head gasket (part number 20949868) is designed for Volvo D7E engines in excavators such as the EC240B, EC290, EC350, and EC380. It provides a high-strength seal between the engine block and cylinder head, ensuring reliable compression, preventing leaks, and supporting optimal engine performance under demanding conditions.

This OTTO cylinder liner (part number 469-5313) is engineered for excavators including Hitachi ZX200 and Komatsu PC200, PC210, PC220. It provides a durable and precisely machined inner surface for the engine cylinder, ensuring optimal compression, heat dissipation, and extended engine life.

This OTTO cylinder head gasket (part number 20882838) is engineered for Volvo D4D, D5D, and D6D excavator engines. It provides a high-temperature, high-pressure seal between the engine block and cylinder head, ensuring reliable compression, preventing leaks, and supporting optimal engine performance.

This OTTO cylinder head gasket (part number 8-94392721-0) is designed for Isuzu 6HK1 engines in excavators like ZX330, ZX350, PC300, and PC350. It ensures a tight, high-temperature seal between the engine block and cylinder head, maintaining compression and preventing leaks.