ARCO Mercedes Sprinter OM654 Crankshaft Locking Tool

The ARCO MK-CLT5381 crankshaft locking tool is designed specifically for 2023-up Mercedes-Benz Sprinter vans using the rear-wheel-drive 2.0L OM654 engine. It holds the crankshaft in the required service position during procedures where unwanted rotation could affect timing or component alignment. ARCO identifies the tool as particularly important when installing its alternator mounting systems on the newer Sprinter platform. The precision fit is intended to give a technician a controlled way to secure the engine rather than improvising a holding method.

Locking the crankshaft can help prevent timing misalignment and unintended movement while fasteners or drive components are being serviced. The tool is engineered around the dimensions of the OM654 application so it can position the crankshaft accurately when used according to the correct service procedure. Its construction is intended for repeated workshop use rather than one-time installation. That makes it suitable for professional technicians and fleet-maintenance shops that service multiple Sprinter vehicles.

Use the locking tool only at the point in the service procedure where the engine manufacturer or ARCO installation instructions call for the crankshaft to be secured. Confirm the engine is the correct OM654 rear-wheel-drive configuration before relying on the tool for alignment. Remove the tool before any attempt to rotate or start the engine. For alternator installation work, it should be treated as a dedicated service tool that supports accurate and repeatable mechanical setup.

• Precision-fit tool for the latest OM654 rear-wheel-drive application
• Helps prevent crankshaft movement during service
• Required for certain ARCO alternator-kit installation procedures
• Built for repeated professional workshop use

For related engine-service components and maintenance hardware, Browse more Engine Parts & Maintenance for related replacement and service components.