GM Genuine Parts Gen 4 LS 4X Single-Bolt (58X) Camshaft Sprocket

Katech GM Genuine Parts Camshaft Sprocket

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.

Key Features

• 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.

Product Specifications

GM Part # 12591689

ACDelco Part # 12591689