HASSLE-FREE INSTALLATION: Designed to match original specifications, no modifications required, saves repair time and labor costs for quick engine shutdown system restoration. RELIABLE ENGINE STOP FUNCTION: Effectively controls engine fuel cut-off and safe shutdown, prevents abnormal operation and protects key diesel engine components. PROFESSIONAL REPLACEMENT PART: Ideal for repair and maintenance of excavators and construction machinery, rigorously tested to meet OEM standards for consistent and dependable operation. Part Number: 129900-66790, 12990066790, YM129900-66790, YM12990066790, Compatibility: For Doosan / Komatsu Excavators: SOLAR 55W-V SOLAR 55-V PLUS For Komatsu Engines: 4D98E-1A-TR 4D98E-1C 4D94E-1A For Yanmar Engines: 4TNV94.