8C-3663 24V Fuel Shutdown Solenoid for CAT 3114 3116 3126 3208 Engine

Product Overview

8C-3663 (also written as 8C3663) is a 24V fuel shutoff solenoid for Caterpillar heavy machinery. This dual coil component works on power-on run and power-off shutdown logic. The original factory part has been discontinued from official supply channels, and this replacement version serves as a reliable substitute for the original unit to control fuel supply and secure engine shutdown.

Key Specifications

FAQs

Q: What engines and machines fit the 8C-3663 fuel shutdown solenoid?

A: Compatible CAT engines: 3114, 3116, 3126, 3208. Excavators: E110B, E200B, E240C, 320/320B, 322B, 325/325B. Loaders & Dozers: 950F/G, 910E/F, 928F loader, 953B track loader. Other equipment: 613C wheel scraper, CS-533 compactor and generator sets.

Q: What does dual coil design mean for this CAT solenoid?

A: Its dual coil structure enables the engine to keep running when energized. Once power is cut off, the solenoid immediately cuts fuel supply to shut down the engine, delivering stable emergency stop performance.

Q: What are the typical failure symptoms of this fuel shutoff solenoid?

A: The engine cannot start, stalls intermittently during operation, or fails to shut down after power is turned off. These problems usually stem from coil burnout or internal plunger sticking.

Q: Are 155-4652,125-5772 and 155-4651 interchangeable for 8C-3663?

A: Yes, these numbers are common cross-reference replacements. Before purchase, confirm your CAT engine model and 24V power requirement to avoid mismatching.

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