GM Part #12591689 | ACDelco Part #12591689
The GM Genuine Parts Camshaft Sprocket is an OEM-engineered timing component designed to maintain precise camshaft-to-crankshaft synchronization in GM LS-based engines. Manufactured to GM’s original specifications, this sprocket ensures proper timing accuracy, durability, and long-term reliability under both street and motorsports operating conditions.
Sourced and supplied by Katech Engineering, this camshaft sprocket is the correct replacement for worn or damaged OE components and is well-suited for engine refreshes, timing set service, and professional-grade builds where factory geometry and timing integrity must be preserved.
Constructed from hardened steel and precision-machined to exact tolerances, the GM Genuine Parts camshaft sprocket delivers consistent chain engagement and dependable performance across a wide RPM range. It is compatible with OEM-style timing chains and timing systems designed for GM LS applications.
Genuine GM / ACDelco replacement component
Maintains correct camshaft timing and chain alignment
Precision-machined hardened steel construction
Designed to GM OE specifications for fit and durability
Ideal for stock, performance, and race engine service
Part Numbers:
GM Genuine Parts: 12591689
ACDelco: 12591689
Professional installation is recommended to ensure proper timing setup and engine operation.
Inside Diameter |
0.659 in |
Inside Diameter |
16.75 mm |
Classification |
OE |
Thickness |
0.375 in |
Thickness |
9.535 mm |
Tooth Quantity |
44 |
Material |
Powdered Metal |
GM Part # 12591689
ACDelco Part # 12591689
