Description
Overview:
This Keyway 6.3 x 50 for crankshafts is a Genuine Yanmar part designed to lock a hub or flywheel to the crankshaft and maintain positive drive without slip. Made from durable steel with a rectangular profile, it provides accurate positioning and reliable torque transfer on small industrial diesel engines. Sized at 6.3 mm x 50 mm (0.25 in x 1.97 in), it suits Yanmar applications where a parallel key is specified, including common models such as L100N and L100AE. The precise dimensions and OEM build help ensure a snug fit in the keyseat, supporting smooth engine operation and consistent alignment of driven components such as flywheels, pulleys, or couplings. Genuine Yanmar Part Number: 160842 21150.
Key Features:
- Genuine Yanmar part for assured compatibility and performance
- Part Number: 160842 21150 for accurate identification
- Dimensions: 6.3 mm x 50 mm (0.25 in x 1.97 in) for correct crankshaft/keyseat fit
- Robust steel construction for long service life under vibration and load
- Maintains precise flywheel or pulley alignment to prevent slippage
- Suitable for routine servicing, rebuilds, and corrective repairs
- Straightforward replacement with no special tools typically required
- Manufactured to OEM tolerances for dependable seating and drive
- Helps preserve ignition/fuel timing where flywheel indexing is critical
- Appropriate for compact diesel engines used across construction and garden machinery
Typical Applications:
Used to secure and index the flywheel, pulley, or coupling to the crankshaft on Yanmar single-cylinder engines in equipment such as generators, water pumps, plate compactors, mixers, pressure washers, and small agricultural or garden machines. Ideal when refitting or replacing rotating components, or when addressing key or keyseat wear to restore secure drive and smooth engine operation.
Also known as:
Crankshaft key, flywheel key, parallel key, shaft key, engine key, drive key, crank key, pulley key, key bar for crankshaft, Yanmar crankshaft key.
Fits Models:
L100AE, L100N, L60AE, L70AE, L70N, L90AE
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