Standard Ignition Ignition Switch P/N:US-491
Turn the key with confidence using the Standard Ignition Ignition Starter Switch US-49 (also written US49), a direct-fit replacement for a wide range of classic Ford and Mercury applications. It drops in for the 1965-1967 Ford Galaxie, 1965-1967 Ford Custom, 1965-1967 Ford Country Sedan, 1967 Ford Mustang, 1966-1967 Ford Fairlane, 1966-1967 Mercury Comet, 1967 Mercury Cougar, 1965-1967 Mercury Monterey and many more — see the Buyer's Guide tab for the full list of covered vehicles and engines.
The ignition switch carries the electrical current that powers the starter and the vehicle's key-on circuits. Signs it may need replacing include a no-crank condition, intermittent power to accessories, or a key that must be jiggled to start.
Backed by a global manufacturer of original-equipment ignition products with quality control maintained from componentry to finished product.
Interchange: CS19 · LS492 · KS6379 · C5AB11572A · C5AB11572B · C5AZ11572A · C5AZ11572B · C5AZ11572C · SW417
This part cross-references / interchanges with the following part numbers:
What does this ignition switch do?
It carries the electrical current that powers the starter and the vehicle's key-on circuits when you turn the key. The US-49 is a direct-fit replacement for the listed applications.
Will this fit my vehicle?
It fits a range of 1965-1967 Ford and Mercury models, including the Galaxie, Custom, Mustang, Fairlane, Comet and Cougar. Check the Buyer's Guide tab to confirm your exact year, make and model.
What are signs my ignition switch may need replacing?
Common signs include a no-crank condition, intermittent power to accessories, or having to jiggle the key to start. Diagnose the cause before replacing, since other components can produce similar symptoms.
What conductors does the US-49 use?
It uses copper alloy conductors that provide strong electrical conductivity with low resistive losses.
Is this switch tested before shipping?
Yes. Every unit is 100% tested to verify both mechanical and electrical switching performance.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.