Super Hold Servo Kit 200-4R
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SONNAXPART NUMBER: 852-K65703-1

Super Hold Servo Kit 200-4R

$19700
1 left in stock
ShippingShips on Sep 08, 2026
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GM TH200C/TH200/200-4R
Super Hold Servo Kit
  • 200-4R
  • Non-Anodized Cover

    • Cover Non-Anodized
    • Piston
    • Pin
    • Spacer
    • Shim
    • Spring
    • E-clip
    • O-Ring Seal Small (not shown)
    • O-Ring Seal Large
    • Lip Seals (2)
    • Seal Ring (2)
    Sonnax super hold servo kit for GM 200, 200-4R, 200C 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 in servo kits K65703 and K65703-1 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
    • 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 Servo Piston
    Product LineSonnax Servo Kit and Components
    BrandSONNAX
    Package Height3.3
    Package Width5.9
    Package Length9.3
    Weight1.43 PG
    Part CategoryReplacement Parts
    Part FitmentSemi Universal
    Vendor Part NumberK65703-1
    Package Qty1
    Package TypeEA
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    REPLACEMENT PARTS

    Replacement Seal Kit For 852-K65703, 852-K65703-1

    SONNAX

    Replacement Seal Kit For 852-K65703, 852-K65703-1

    Part Number : 852-65703-SK
    $1520
    Some parts are not legal for use in California or other states with similar laws / regulations
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