HomeTransmission > Manual Transmission ComponentsLuk LSC421 Clutch Slave Cylinder
Part #: LSC421

Luk LSC421 Clutch Slave Cylinder

⚙️ 29 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: Mazda, 5 and 3
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Reliable Clutch Slave Cylinder for Mazda 3 and Mazda 5

The Luk LSC421 clutch slave cylinder is designed specifically for manual transmission systems in Mazda 3 and Mazda 5 models. This component ensures smooth clutch operation and consistent hydraulic pressure for optimal shifting performance.

  • Compatible with Mazda 3 and Mazda 5 manual transmissions
  • OEM-quality clutch slave cylinder by Luk
  • Part number LSC421 for precise identification
  • Durable construction for long-lasting performance
  • Direct replacement for factory-installed clutch slave cylinders

Product Details and Specifications

The Luk LSC421 clutch slave cylinder is engineered to meet the exact specifications required by Mazda manual transmission systems. It functions as a hydraulic actuator that engages and disengages the clutch by transferring pressure from the clutch master cylinder. This part is essential for maintaining proper clutch pedal feel and ensuring reliable gear shifts in Mazda 3 and Mazda 5 vehicles. The LSC421 is manufactured with high-quality materials to resist wear and hydraulic fluid corrosion, providing consistent performance over time.

Applications and Problem Resolution

This clutch slave cylinder is compatible with Mazda 3 and Mazda 5 models equipped with manual transmissions. It addresses common issues such as:

  • Clutch pedal feels spongy or soft
  • Difficulty shifting gears smoothly
  • Hydraulic fluid leaks around the slave cylinder
  • Clutch not fully disengaging during operation
  • Reduced clutch responsiveness or delayed engagement

Installation Notes and Tips

When installing the Luk LSC421 clutch slave cylinder, ensure the hydraulic system is properly bled to remove air pockets for optimal clutch performance. Use manufacturer-recommended brake fluid and verify all connections are secure to prevent leaks. It is advisable to inspect the clutch master cylinder and related components during replacement to maintain the overall health of the clutch hydraulic system.

Quality Assurance and Warranty

Luk manufactures the LSC421 clutch slave cylinder to meet stringent quality standards, ensuring reliable operation in Mazda manual transmissions. While specific warranty details may vary, Luk typically offers coverage against manufacturing defects. Refer to the product documentation or supplier for exact warranty terms.

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2015Mazda52.5LL4N/A
2014Mazda52.5LL4N/A
2013Mazda32.5LL4N/A
2013Mazda32.0LL4N/A
2013Mazda52.5LL4N/A
2012Mazda32.5LL4N/A
2012Mazda32.0LL4N/A
2012Mazda52.5LL4N/A
2011Mazda32.0LL4N/A
2011Mazda32.5LL4N/A
2010Mazda32.0LL4N/A
2010Mazda32.5LL4N/A
2010Mazda52.3LL4N/A
2009Mazda32.0LL4N/A
2009Mazda32.3LL4N/A
2009Mazda52.3LL4N/A
2008Mazda32.0LL4N/A
2008Mazda32.3LL4N/A
2008Mazda52.3LL4N/A
2007Mazda32.0LL4N/A
2007Mazda32.3LL4N/A
2007Mazda52.3LL4N/A
2006Mazda32.0LL4N/A
2006Mazda32.3LL4N/A
2006Mazda52.3LL4N/A
2005Mazda32.0LL4N/A
2005Mazda32.3LL4N/A
2004Mazda32.0LL4N/A
2004Mazda32.3LL4N/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:

138.45408512019677072959073421BP4S41920ACS650117NAS1061SH6237

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