9X-9971 Caterpillar 3516B ECU Engine Control Unit | Electronic Control Parts

CAT 9X-9971 Caterpillar 3516B ECU Engine Control Unit

OEM-quality Engine Control Unit (ECU) for Caterpillar 3516B diesel engines. The ECU is the central electronic management system controlling fuel injection timing and quantity, turbocharger boost, engine protection functions, and diagnostic fault logging. Programmed to OEM specifications for the 3516B engine family, ensuring correct fuel maps, timing curves, and communication protocols with the engine harness and sensors. Essential for ECU replacement and engine electronic system repair. Ideal for global parts retailers, repair service providers, and heavy-duty diesel engine workshops.

Part Specifications

• Part Number: 9X-9971 (variants: -04, -05)
• Brand: Caterpillar (CAT)
• Component: ECU — Engine Control Unit
• Condition: New / OEM Replacement
• Country of Origin: China
• HS Code: 8543.70
• Application: Industrial / Marine / Power Generation

Compatible Engine Models

• Caterpillar 3516B
• Please confirm compatibility with your engine serial number and software version before ordering.

Cross Reference Numbers

9X-9971 | 9X9971 | CAT9X9971 | 9X-9971-04 | 9X-9971-05

Why Choose Us?

• Global B2B wholesale supply
• Bulk pricing available — contact us for a quote
• Fast international shipping
• OEM & aftermarket options

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