I. Core Specifications

Model: 4W8471 (4W-8471)

Brand: Caterpillar

Voltage: DC 24V (Caterpillar Heavy-Duty Standard)

Functions: Starter System Delay Control, Pre-heat / Ignition Sequencing, Fault Delay Protection

Delay: Adjustable (Typical: 0–45 seconds); Optimized for Engine Cold Starting

Terminals: 7-Pin (Bolt-type connections; not spade terminals); 4-Lug Mounting

Housing: Black Flame-Retardant Plastic Shell with Metal Base; Vibration-Resistant and Oil-Resistant

Weight: Approx. 0.51 kg

II. Applicable Models (Caterpillar Heavy-Duty Diesel Engines / Sets)

Engines: 3306B, 3406C, 3408C, 3412C, 3508C, 3512, 3516, etc.

Equipment: Generator Sets, Marine Engines, Large Excavators / Loaders / Dozers (e.g., D9R, 988H)

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