Standard Ignition US-54L Ignition Lock Cylinder

Ignition Lock Cylinder for Classic GM Vehicles

The Standard Ignition US-54L ignition lock cylinder is built for column-mounted applications that need precise fitment and dependable key operation. It is coded and supplied with instructions, making it a practical replacement for worn or failing ignition locks on classic Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models.

• Coded ignition lock cylinder for accurate key operation
• Column mounting location
• Instructions included for installation reference
• Keys included
• Professional-grade construction with solid brass tumblers, chrome plated brass keys, and die-cast zinc lock cores
• Multiple randomly assigned key codes for consistent service replacement

Detailed Product Overview

Standard Ignition US-54L is engineered as an OE-style ignition lock cylinder replacement for vehicles where the original lock has worn, stuck, or no longer turns smoothly. The design uses brass tumblers and a zinc lock core to support precise operation, while the coded format helps match the cylinder to the supplied keys. This part is a direct service solution for 1967-1968 Cadillac DeVille, 1968 Chevrolet Camaro, 1968 Chevrolet Corvette, and other classic GM applications listed below.

This part cross-references Dorman OE Solutions 989-058 for the same application.

Common Problems This Part Can Address

• Key will not turn or turns inconsistently in the ignition
• Worn internal tumblers causing poor cylinder engagement
• Broken or damaged ignition lock core
• Difficulty starting due to a failing column-mounted lock cylinder
• Replacement needs for restored or repaired classic GM ignition systems

Installation Notes and Fitment

Fits 1968 Buick LeSabre, column; 1968 Buick Riviera, column; 1968 Buick Skylark, column; 1967-1968 Cadillac Commercial Chassis, column; 1967-1968 Cadillac DeVille, column; 1967-1968 Cadillac Eldorado, column; 1967-1968 Cadillac Fleetwood, column; 1968 Chevrolet Camaro, column; 1968 Chevrolet Caprice, column; 1968 Chevrolet Corvette, column; 1968 Chevrolet El Camino, column; 1968 Oldsmobile 98, column; 1968 Oldsmobile Cutlass, column; 1968 Oldsmobile Cutlass Supreme, column; 1968 Oldsmobile Delta 88, column; 1968 Oldsmobile Toronado, column; 1968 Pontiac Acadian, column; 1968 Pontiac Bonneville, column; 1968 Pontiac Catalina, column; 1968 Pontiac Firebird, column; 1968 Pontiac Grand Prix, column; 1968 Pontiac GTO, column; 1968 Pontiac Laurentian, column; 1968 Pontiac LeMans, column; 1968 Pontiac Parisienne, column; 1968 Pontiac Tempest, column.

Verify the existing column lock cylinder style before installation and follow the included instructions for proper service. For applications such as the 1968 Chevrolet El Camino ignition lock cylinder or 1968 Pontiac Firebird ignition lock cylinder replacement, confirm the column-mounted configuration matches the vehicle before ordering.

Quality Assurance

Standard Ignition builds this replacement lock cylinder with solid brass tumblers, chrome plated brass keys, and die-cast zinc components to support consistent operation and technician-focused serviceability. The part is developed from long-term ignition system research aimed at addressing common failure points in original equipment locks.