S.A. Gear S721 Crankshaft Timing Sprocket

The S.A. Gear S721 is a crankshaft timing sprocket designed as a direct replacement for OEM timing drive systems. As a critical component of the engine's valve train, the crankshaft sprocket works in conjunction with the timing chain, camshaft sprocket, tensioners, and guides to maintain precise ignition and valve timing.

Key Features:

• Inside Diameter: 1.56" for precise crankshaft fitment
• Precision-machined bore ensures accurate alignment and true fit
• Manufactured to OEM specifications for reliable replacement
• Compatible with complete timing kit installations or sold as an individual replacement component
• Engineered for durability to withstand the demands of engine rebuilds and routine maintenance

S.A. Gear has been a trusted manufacturer of timing chain components for domestic and import engines for decades. The S721 crankshaft sprocket is available for individual purchase or as part of a complete timing set. When replacing the timing chain, it is recommended to also replace the sprockets, tensioners, and guides to ensure full system integrity and performance.