Piston Pin Locks

Piston pin locks are small but critical retainers that keep the wrist pin located inside the piston, preventing it from contacting the cylinder wall and causing severe engine damage. Our collection covers all common designs: conventional snap rings (circlips), spiral locks, and wire locks, in a range of wire diameters and high-strength materials to match your piston groove. When you're selecting locks, check your piston's groove type and pin diameter—spiral locks often fit round grooves, while snap rings may require a specific groove profile. Always follow the manufacturer's installation procedure; a poorly seated lock can lead to catastrophic failure.

  • Snap rings (circlips)
  • Spiral locks
  • Wire locks
  • Multiple wire diameters and materials for compatibility

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