200-4R, TH200, TH200C

Super Hold Servo Kit
Part No. K65703-1

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Sonnax super hold servo kit K665703-1 for GM TH200, 200-4R, TH200C units features a 17% greater apply area than the Grand National servo. Its pin is longer than the longest OE pin, allowing for a full range of adjustment. The optional parts include a shim, spring and spacer which, when combined with OE springs, result in a variety of shift tuning capabilities. Altogether, the level of customization in this kit makes it ideal for high-performance street applications as well as all-out racing.

Overall sealing characteristics have been improved throughout the servo, which features an O-ring to seal the piston to pin. This O-ring prevents cross leakage between the apply and release side of the piston, ensuring all apply pressure gets to the piston for solid shifts.

  • 17% Greater apply area than Grand National servo
  • Extra-long servo pin and optional parts for highly tunable shift feel
  • Outstanding sealing characteristics
  • Made from 6061 billet aluminum for improved strength
  • Piston
  • Pin
  • Spacer
  • Shim
  • Spring
  • E-clip
  • Cover Non-Anodized
  • O-Ring Seal Small (not shown)
  • O-Ring Seal Large
  • Lip Seals (2)
  • Seal Ring (2)

  • 200-4R, TH200, TH200C Super Hold Servo Kit K65703-1