Standard Ignition US-24L Ignition Lock Cylinder

Ignition Lock Cylinder for Classic GM Applications

Restore reliable key operation with the Standard Ignition US-24L ignition lock cylinder. This coded, column-mounted complete assembly is built for precise installation and consistent operation in a wide range of Chevrolet, GMC, Buick, Oldsmobile, and Pontiac vehicles from the 1960s through 1991.

Designed for technicians and restorers, the US-24L uses solid brass tumblers, chrome plated brass keys, and a die-cast zinc lock core for dependable fit and function. It is a strong OE-style replacement for vehicles such as the Chevrolet El Camino, Chevrolet Blazer, and GMC Jimmy.

Key Features

• Coded ignition lock cylinder for direct key matching
• Complete assembly for column-mounted applications
• Precision-fit construction for original-style installation
• Solid brass tumblers and chrome plated brass keys
• Die-cast zinc lock core for durable operation
• Instructions included for installation support
• Compatible with multiple classic GM platforms, including Chevrolet P30 and GMC P3500

Detailed Description

Standard Ignition US-24L is engineered as an OE-style ignition lock cylinder replacement for classic GM vehicles that use a column-mounted ignition setup. It is coded and supplied as a complete assembly, helping simplify replacement when the original lock cylinder is worn, sticking, or no longer matches the key. This part cross-references Dorman OE Solutions 926-058 for the same application.

Fitment includes 1966-1991 Chevrolet and GMC trucks and vans, plus selected Buick, Oldsmobile, and Pontiac models. Common search terms for this part include ignition lock cylinder for 1975-1979 Chevrolet G10, ignition lock cylinder for 1967-1974 GMC G15/G1500 Van, and ignition lock cylinder for 1982-1990 Chevrolet P30 on dash applications. The Standard Ignition US-24L also serves restorations needing a correct replacement for Chevrolet El Camino, Chevrolet Blazer, and GMC Jimmy models.

What It Helps Fix

• Worn or sticking ignition lock cylinder operation
• Keys that no longer turn smoothly in the ignition
• Broken or unreliable original lock core components
• Mismatch between the ignition cylinder and existing key code
• Restoration needs for original-style GM column ignition systems

Installation Notes and Tips

Verify the mounting location before ordering, as this part is listed for column-mounted applications and also appears in specific dash-mounted vehicle notes. Review the vehicle-specific fitment details for tilt-wheel and chrome-finish exceptions, especially on 1970s and early 1980s Chevrolet and GMC models. Instructions are included, and the lock cylinder is coded for setup during installation.

Quality Assurance

Standard Ignition builds this lock cylinder with brass and zinc components selected for consistent technician-level service. The design reflects long-term OE replacement development focused on correcting common failure points found in original ignition locks.