Standard Ignition US-104L Ignition Lock Cylinder

Ignition Lock Cylinder for Ford and Mercury

Standard Ignition US-104L is a coded ignition lock cylinder built for column-mounted applications that need a precise OE-style replacement. It is designed for select Ford, Mercury, and Lincoln vehicles, including Mustang, Ranger, Bronco II, and Grand Marquis applications.

Key Features

• Coded ignition lock cylinder for direct replacement service
• Column mounting location
• Male connector with 1 connector and female blade terminals
• Instructions included for installation reference
• Constructed with solid brass tumblers, chrome plated brass keys, and a die-cast zinc lock core
• Designed to address common original equipment lock cylinder failure points

Detailed Description

Standard Ignition US-104L is engineered to match the original ignition lock cylinder layout for precision installation and dependable operation. The internal construction uses solid brass tumblers and a die-cast zinc lock core, while the chrome plated brass keys and coded keying help support consistent lock function. This part number, US-104L, is built for column-mounted ignition systems found across a wide range of Ford, Mercury, and Lincoln passenger cars and trucks from the late 1970s through the early 1990s. This part cross-references Dorman OE Solutions 989-001 for the same application.

What It Helps Fix

• Key will not turn smoothly in the ignition
• Worn or sticking ignition lock cylinder operation
• Broken or unreliable original lock core components
• Ignition switch issues caused by cylinder wear at the column
• Need for a coded replacement ignition lock cylinder on select Ford Mustang, Ranger, and Grand Marquis models

Installation Notes and Tips

Verify column-mounted fitment before installation and compare the original lock cylinder, connector style, and terminal layout to the replacement part. Instructions are included. Confirm vehicle-specific application details for models such as 1979-1993 Ford Mustang, 1984-1992 Ford Ranger, and 1979-1989 Mercury Grand Marquis before service. The US-104L is also listed for select Lincoln Continental and Town Car applications.

Quality Assurance

Standard Ignition draws on long-term ignition system development focused on technician needs and OE failure patterns. The US-104L is built with professional-grade materials and coded keying to support consistent service on the listed Ford, Mercury, and Lincoln applications.