ECU Controller 172‑9391 10R‑4331 172‑9389 for CAT Excavator
- Product Name: Engine Control Unit / ECU Controller
- Part Number: 172‑9391, 10R‑4331, 172‑9389
- Condition: Remanufactured controller, ready‑to‑program
- Material: Heavy‑duty cast aluminum housing, anti‑shock & waterproof
- Heavy‑duty cast‑aluminum casing, dust‑proof, vibration‑resistant for harsh construction site environment
- Strict hardware testing before shipment, eliminates circuit short‑circuit and component failure
- Complete controller housing assembly, supports professional programming & flashing
- Direct replacement for original unit, for excavator overhaul repair
- Multiple part numbers in stock: 172‑9391, 10R‑4331, 172‑9389
CAT ECU controller 172‑9391, 10R‑4331, 172‑9389 is the core electronic control module for excavator engine. It manages fuel injection, engine speed, protection functions and machine working condition. Widely used for CAT construction machinery repair and replacement. Professional programming is required before installation.
We supply parts for Kubota, Cum mins, CAT, Perkins, Yanmar, Isuzu, Komatsu, Mitsubishi, Hino, Nissan, Vo lvo, Deutz, Doosan, Daewoo, John De ere, Scania, Hyundai, JCB etc.
Shipping: Sea freight, air freight and international express are all available.
Tax Notice: All import duties and local destination taxes shall be borne by the buyer. Please verify local customs regulations in advance.
- Does the controller come with pre‑programmed software?
- Unit is without program, professional programming & matching is needed after purchase.
- What are common ECU failure symptoms?
- Engine no‑start, fault code report, power drop, abnormal working condition.
- Installation tips?
- Disconnect battery power before installation, avoid static damage, complete programming after mounting.
- CAT: 345B, 365B, 385B and related heavy‑duty excavator series
- Cum mins: NT855, M11, K19, K38
- Komatsu: PC400‑7, PC450‑7, PC600‑7
- Isuzu: 6BG1, 6HK1, 6WG1
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