Model Compatibility: Fits OM651 engines with 1.8/2.1 diesel displacement for camshaft locking and engine timing procedures during repair. Function Purpose: Provides camshaft locking and engine timing functions required for service and maintenance of specified OM651 diesel engines. Application Scope: Designed for use as a replacement tool set in engine repair scenarios involving OM651 1.8/2.1 diesel engine timing procedures. Specification Match: Matches the dimensional and functional requirements of the tool set used with OM651 1.8/2.1 diesel engines. Installation Use: Enables correct camshaft positioning and timing alignment when servicing OM651 1.8/2.1 diesel engines according to factory-recommended repair methods., Manufacturer: NXnsPAfaN