HomeIgnition > SwitchesStandard Ignition US-850 Ignition Lock Cylinder and Switch
Part #: US-850

Standard Ignition US-850 Ignition Lock Cylinder and Switch

⚙️ 2 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, Miata
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Reliable Ignition Lock Cylinder and Switch for Mazda Miata

The Standard Ignition US-850 ignition lock cylinder and switch is designed specifically for Mazda Miata models. This bolt-on replacement part ensures secure and precise ignition control with included keys and multiple switch positions for smooth operation.

  • Bolt-on attachment method for straightforward installation
  • Includes two female rectangular connectors for reliable electrical connections
  • Equipped with 10 male blade terminals for secure wiring
  • Four switch positions: lock, accessory, on, and start
  • Mounts directly to the steering column for proper fitment
  • Comes with keys included for immediate use

Product Details and Specifications

The Standard Ignition US-850 ignition lock cylinder and switch is engineered to meet the specific requirements of Mazda Miata vehicles. Featuring a bolt-on attachment method, this part mounts securely to the steering column, ensuring proper alignment and function. The switch includes four distinct positions—lock, accessory, on, and start—allowing for full ignition control. Electrical connections are facilitated by two female rectangular connectors and ten male blade terminals, providing a stable and durable interface with the vehicle’s wiring harness. Keys are included with the part, enabling immediate replacement without additional key cutting or programming.

Compatible Vehicles and Applications

  • Replacement ignition lock cylinder and switch for Mazda Miata models
  • Addresses issues such as ignition key not turning, failure to start, or intermittent electrical connection
  • Resolves problems with worn or damaged ignition switches causing accessory or start position failures
  • Ideal for restoring proper ignition function after theft or key loss

Installation Notes and Tips

Installation of the US-850 ignition lock cylinder and switch requires removal of the steering column cover to access the mounting bolts. The bolt-on design simplifies replacement, but care should be taken to align the switch correctly with the column. Disconnect the battery before installation to prevent electrical shorts. Ensure all connectors are fully seated and terminals are clean for optimal electrical contact. Using the included keys, verify smooth operation through all four switch positions before reassembling the steering column.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The US-850 ignition lock cylinder and switch undergoes rigorous quality control to ensure durability and reliable performance in Mazda Miata vehicles. This part is backed by a limited warranty covering defects in materials and workmanship, providing confidence in your replacement component.

BrandStandard Ignition
Part NumberUS-850
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeRectangular
Keys IncludedYes
Mounting LocationColumn
Terminal GenderMale
Terminal TypeBlade

This part fits 2 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2005MazdaMiataManualN/Aw/o Immobilizer
2004MazdaMiataManualN/Aw/o Immobilizer

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

CS1210KS7210LA9968NEY376290

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.