HomeElectrical, Lighting and Body > SwitchesStandard Ignition SLS-321 Clutch Starter Safety Switch
Part #: SLS-321

Standard Ignition SLS-321 Clutch Starter Safety Switch

⚙️ 40 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Porsche, 911, Boxster, and Cayman
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Reliable Clutch Starter Safety Switch for Porsche Vehicles

The Standard Ignition SLS-321 clutch starter safety switch is designed to ensure safe engine starting for select Porsche models. Engineered with precision, this switch helps prevent accidental engine starts unless the clutch pedal is fully depressed, enhancing vehicle safety and functionality.

  • Terminal Quantity: 4 blade terminals for secure electrical connections
  • Connector Gender: Female connector with a square shape for proper fitment
  • Terminal Gender: Male terminals designed for reliable contact
  • Activation Style: Spring-activated mechanism for consistent performance
  • Attachment Method: Push-in installation for straightforward mounting
  • Voltage: 12 volts compatible with standard automotive electrical systems
  • Material: Durable plastic housing for long-lasting use
  • Hardware and mounting brackets not included
  • Wiring harness not included

Product Details and Compatibility

The SLS-321 clutch starter safety switch from Standard Ignition is specifically compatible with Porsche 911, Boxster, and Cayman models. This switch features a single female connector with a square shape and four male blade terminals, ensuring a secure and precise electrical connection. The spring activation style provides reliable engagement and disengagement of the clutch starter circuit, preventing engine start unless the clutch pedal is pressed. The push-in attachment method simplifies installation without the need for additional hardware or mounting brackets.

Common Applications and Problem Resolution

  • Prevents engine from starting without clutch pedal engagement
  • Eliminates starter motor engagement issues related to faulty switches
  • Resolves intermittent starting problems in Porsche 911, Boxster, and Cayman
  • Addresses electrical connection failures due to worn or damaged terminals
  • Improves overall safety by ensuring proper clutch operation before engine start

Installation Notes and Tips

Installation of the Standard Ignition SLS-321 clutch starter safety switch requires no additional hardware or mounting brackets. The push-in attachment method allows for a straightforward replacement process. Ensure the vehicle’s battery is disconnected before installation to avoid electrical shorts. Verify the connector orientation and terminal alignment to prevent damage during installation. Since the wiring harness is not included, inspect existing wiring for wear or damage and replace if necessary.

Quality Assurance and Warranty Information

Standard Ignition manufactures the SLS-321 clutch starter safety switch to meet or exceed OEM specifications for fit, form, and function. The plastic housing and blade terminals are designed for durability under normal operating conditions. While hardware and wiring harnesses are not included, the switch is tested for electrical continuity and activation reliability. Please refer to Standard Ignition’s warranty policy for coverage details on this part number.

BrandStandard Ignition
Part NumberSLS-321
Connector GenderFemale
Terminal GenderMale
Terminal Type4 Blade Terminals

This part fits 40 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2013Porsche911N/A
2012Porsche911N/A
2012PorscheBoxster2.9LH6N/A
2012PorscheBoxster3.4LH6N/A
2012PorscheCaymanN/A
2011Porsche911N/A
2011PorscheBoxster2.9LH6N/A
2011PorscheBoxster3.4LH6N/A
2011PorscheCaymanN/A
2010Porsche911N/A
2010PorscheBoxster2.9LH6N/A
2010PorscheBoxster3.4LH6N/A
2010PorscheCaymanN/A
2009Porsche911N/A
2009PorscheBoxster2.9LH6N/A
2009PorscheBoxster3.4LH6N/A
2009PorscheCaymanN/A
2008Porsche911N/A
2008PorscheBoxster2.7LH6N/A
2008PorscheBoxster3.4LH6N/A
2008PorscheCaymanN/A
2007Porsche911N/A
2007PorscheBoxster2.7LH6N/A
2007PorscheBoxster3.4LH6N/A
2007PorscheCaymanN/A
2006PorscheBoxsterN/A
2005Porsche9113.6LH6N/A
2005PorscheBoxsterN/A
2004Porsche9113.6LH6N/A
2004PorscheBoxsterN/A
2003Porsche9113.6LH6N/A
2003PorscheBoxsterN/A
2002Porsche9113.6LH6N/A
2002PorscheBoxsterN/A
2001Porsche9113.6LH6N/A
2001PorscheBoxsterN/A
2000PorscheBoxsterN/A
1999PorscheBoxsterN/A
1998PorscheBoxsterN/A
1997PorscheBoxsterN/A

* 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:

18-17731S693953-5461699661311400RB4018SL2061SL871

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