Airtex 4H1031 Ignition Lock Cylinder US133L Replacement

The Airtex 4H1031 is a direct-fit replacement ignition lock cylinder, also cross-referenced as US133L. Designed to restore proper ignition switch function, this lock cylinder replaces worn, damaged, or failed OEM units that cause hard starting, key binding, or ignition switch failure.

Airtex Automotive Division is a trusted manufacturer of fuel system and ignition components, engineering their parts to meet or exceed original equipment specifications for reliable, long-lasting performance.

Key Features:

• Direct OEM replacement ignition lock cylinder
• Cross-reference number: US133L
• Engineered to meet or exceed original equipment specifications
• Restores proper key operation and ignition function
• Precision-machined internals for smooth, reliable key engagement
• Drop-in fitment for straightforward installation

The Airtex 4H1031 ignition lock cylinder is an ideal solution for restoring ignition reliability on compatible vehicles, eliminating issues such as key sticking, difficulty turning, or intermittent no-start conditions.