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Oversized Servo Pin Kit for GM 4L60, 4L60-E, 4L65-E, or 4L70-E Transmissions
Product Discontinued
SONNAXPART NUMBER: 852-77787-03K

Oversized Servo Pin Kit for GM 4L60, 4L60-E, 4L65-E, or 4L70-E Transmissions

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Servo Pistons
Oversized Servo Pin Kit
  • GM 4L60, 4L60-E, 4L65-E, or 4L70-E Transmissions
  • Stiffer 4th Apply Spring
  • Additional O-Ring Improves Sealing
  • Compatible with OE and Aftermarket Servos
  • Includes:
    • Servo Pin
    • Green Spring
    • O-Ring

      Oversized Servo Pin Kit 852-77787-03K for GM 4L60, 4L60-E, 4L65-E, or 4L70-E Transmissions:

      • Oversized for use in reconditioned case bores
      • Matches the longest OE pin length
      • Chromoly Steel is suitable for high performance as well as a stock replacement
      • Compatible with OE and aftermarket servos

      Oversized Servo Pin Kit 852-77787-03K for GM 4L60, 4L60-E, 4L65-E, or 4L70-E Transmissions Note:

      • Servo pin bore requires reaming with Sonnax 77787-RM3 reaming tool

      • High-Performance Servos, Servo Kits, and Components to Meet the Toughest Transmission Challenges

      Sonnax servos progressively increase band force as line pressure increases and are the perfect upgrade for more holding power without excessively harsh shifts.

    Part TypeAutomatic Transmission Band Servo Piston Pin
    Product LineSonnax Servo Kit and Components
    BrandSONNAX
    Part CategoryReplacement Parts
    Position3-4
    QuantitySold as a Kit
    Part FitmentSemi Universal
    Vendor Part Number77787-03K
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews
    Please click here to download the instructions PDF file

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    Some parts are not legal for use in California or other states with similar laws / regulations
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