Standard Ignition Ignition Lock Cylinder and Switch P/N:US-406

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$384.99
MPN: US-406
Item Package Quantity: 1
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Standard Ignition Ignition Lock Cylinder and Switch P/N:US-406
Standard Ignition Ignition Lock Cylinder and Switch P/N:US-406
$384.99

Turn the key with confidence again with the Standard Ignition Ignition Lock Cylinder and Switch US-406. This combination unit pairs the keyed lock cylinder with the electrical ignition switch, so it both accepts the key and directs power through the accessory, run, and start positions. It drops in as a direct-fit replacement for the 1994-1997 Acura Integra.

  • Cylinder and switch together: houses the tumblers that read the key and the electrical switch that signals the accessory, run, and start circuits.
  • Key-position control: routes power to the ignition and starter circuits as the key is turned.
  • Signs it may need replacing: a key that binds, sticks, or won't turn, intermittent no-crank or no-start, or accessories that cut out as the key moves. Diagnose the cause before replacing, as these symptoms can have other sources.

If a worn or failed lock cylinder and switch is the cause of your ignition trouble, this replaces it.

Interchange: 35100ST7A11 · 35100ST7A12 · CS921 · LS871 · KS6921 · 18-0730 · 180730 · LA8411

Manufacturer part number US-406

This part cross-references / interchanges with the following part numbers:

35100ST7A11, 35100ST7A12, CS921, LS871, KS6921, 18-0730, LA8411, US-406

Frequently Asked Questions

What vehicles does the US-406 fit?

It is a direct-fit replacement for the 1994-1997 Acura Integra. Check the Buyer's Guide tab to confirm it matches your specific vehicle.

What does this part do?

It combines the keyed lock cylinder with the electrical ignition switch, accepting the key and directing power through the accessory, run, and start positions.

Does it include both the lock cylinder and the switch?

Yes. The US-406 is a combination unit that pairs the ignition lock cylinder with the ignition switch in one part.

What are common signs this part may need replacing?

A key that sticks or won't turn, intermittent no-crank or no-start, or accessories cutting out as the key moves. Diagnose the cause first, as other faults can mimic these symptoms.

What interchange numbers does the US-406 replace?

It cross-references 35100ST7A11, 35100ST7A12, CS921, LS871, KS6921, 18-0730 (180730), and LA8411.