Keep your starter safely locked out of gear with the Standard Ignition Neutral Safety Switch NS-353, a direct-fit replacement for the 2004-2005 Mazda RX-8. This switch signals the starting circuit so the engine can crank only when the gear selector is in Park or Neutral, helping keep the vehicle from starting while in gear.
- Core function: completes the starter circuit only in the Park or Neutral position, an important safety interlock for the drivetrain.
- Direct-fit design: installs as a replacement for the neutral safety switch on the listed application.
- Switching operation: intended to restore proper Park/Neutral starting function when the original switch has failed.
Signs this part may need replacing include an engine that won't crank in Park or Neutral, cranking in other gear positions, or a related circuit issue. Because these symptoms can have other causes, diagnose the fault before replacing; if a failed neutral safety switch is confirmed, this NS-353 replaces it.
Interchange: NS38093 · SW5531 · NS6875 · BW0119444 · BW0119444A
Manufacturer part number NS-353 (also NS353).
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the neutral safety switch do?
It lets the starter engage only when the gear selector is in Park or Neutral, a safety interlock that helps prevent the engine from cranking while in gear.
Will this fit my vehicle?
The NS-353 is a direct-fit replacement for the 2004-2005 Mazda RX-8. Check the Buyer's Guide tab to confirm it matches your vehicle.
Why won't my engine crank in Park or Neutral?
A failed neutral safety switch is one possible cause. Diagnose the fault first; if the switch is confirmed bad, this NS-353 replaces it.
What numbers does this part interchange with?
It interchanges with NS38093, SW5531, NS6875, BW0119444, and BW0119444A.
Is any hardware or wiring included?
The listing does not state included hardware. Consult the vehicle service information for the correct installation parts and procedure.
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