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4th Gear Super Hold Dual Servo Kit

Pricing: $82.95

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Features and Benefits:

  • Patented dual-piston design with 40% more apply delivers greater holding power
  • D-ring seals prevent pressure loss
  • Use with OE, Corvette or Sonnax 2nd gear servo assemblies
Sonnax 4th gear super hold dual servo kit 77767K features 40% more apply surface area for greater holding power in GM 4L60, 4L60-E, 4L65-E and 4L70-E units. Vehicles with these transmissions often exhibit poor 3-4 shift quality and experience band failure in performance applications. Combine this servo kit with Sonnax 2nd gear servo 77911-03K for unmatched holding power and shift performance that's an easy in-vehicle install.



Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W6.0000” x H7.0000” x L7.0000”

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