Help make sure your engine cranks only when it should with the Standard Ignition switch NS-338, a neutral safety switch that lets the starter circuit close only when the gear selector is in Park or Neutral. It is a direct-fit replacement for the 2002 Infiniti Q45 and the 2003 Infiniti M45.
The neutral safety switch acts as an electrical interlock in the starting circuit. It helps prevent the engine from cranking while the vehicle is in gear. Signs this part may need replacing include:
Other starting-circuit faults can cause these symptoms, so diagnose the cause first. If a failed neutral safety switch is the problem, the NS-338 replaces it.
Fits: 2002 Infiniti Q45 · 2003 Infiniti M45. See the Buyer's Guide tab for complete application details.
Interchange: NS38049 · SW7479 · NS6831 · 34980AR200
This part cross-references / interchanges with the following part numbers:
What does a neutral safety switch do?
It acts as an electrical interlock that lets the starter circuit close only when the gear selector is in Park or Neutral. This helps prevent the engine from cranking while the vehicle is in gear.
Which vehicles does the Standard Ignition NS-338 fit?
It is listed for the 2002 Infiniti Q45 and the 2003 Infiniti M45. See the Buyer's Guide tab for complete application details.
What are signs a neutral safety switch may need replacing?
Common signs are no crank in Park while it cranks in Neutral, or an intermittent no-crank condition. Other starting-circuit faults can cause these too, so diagnose before replacing.
Is the NS-338 tested?
Yes. Standard Ignition states its parts are 100% tested to verify both mechanical and electrical switching performance.
What part numbers does the NS-338 interchange with?
It interchanges with NS38049, SW7479, NS6831 and 34980AR200.
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.
