A1089910067
Woodruff Key
Detroit Diesel

The woodruff key is an integral part of engine timing and rotating assembly, providing a precise connection between a gear or pulley and a shaft. Its unique semi-circular shape ensures a secure fit that prevents relative motion, maintaining correct alignment of components such as camshafts, crankshafts, or pulleys. Made from hardened steel, it resists wear and deformation under operational stresses. Proper installation of this key guarantees smooth power transfer and prevents costly misalignments. Its importance extends to maintaining engine timing accuracy, which directly impacts performance and emissions. The simplicity of its design belies its critical function in engine mechanics. Source One Parts Center recommends this component for its quality and reliability in heavy-duty diesel engine assemblies.